View source for EMD SD70 series

{{Short description|North American diesel–electric locomotive class}}
{{Use mdy dates|date=May 2018}}
{{Infobox locomotive
| name = EMD SD70 series
| powertype = Diesel-electric
| image = Norfolk Southern SD70 (378889478).jpg
| caption = [[Norfolk Southern]] SD70 No. 2562
| builder = [[Electro-Motive Diesel]] (EMD)
| buildmodel = SD70, SD70I, SD70M, {{nowrap|SD70M-2}}, SD70AC, SD70MAC, SD70ACe, SD70ACe/LCi, SD70ACS, {{nowrap|SD70ACe-T4}}, {{nowrap|SD70ACe-BB}}, SD70ACe/45, SD70IAC, SD70ACe/LW, SD70ACe-P4, SD70ACe-P6, SD70ACU, SD70ACC, SD70MACH, SD70MACe
| builddate = 1992–present
| transmission = [[Diesel-electric transmission|Diesel electric]]
| maxspeed = {{cvt|70|mph}}, {{cvt|75|mph}} for the SD70ACe-T4
| aarwheels = C-C (B+B-B+B for SD70ACe-BB, B1-1B for SD70ACe-P4 and SD70MACH)
| uicclass = Co'Co' (Bo'Bo'Bo'Bo' for SD70ACe-BB, Bo1’1Bo’ for SD70ACe-P4 and SD70MACH)
| Britishclass = Co-Co (Bo+Bo-Bo+Bo for SD70ACe-BB, Bo1-1Bo for SD70ACe-P4 and SD70MACH)
| gauge = {{track gauge|ussg|allk=on}} for the North American market;<br/> {{track gauge|1520mm|lk=on}} for [[Yakutia]];<br/>{{track gauge|1600mm|lk=on}} for [[Brazil]];<br/>{{track gauge|1000mm|lk=on}} for Brazil and [[Guinea]]
| trucks = EMD HTCR-Ia: SD70, SD70I, SD70M, SD70MAC;<br/>EMD HTCR-Ib: SD70I, SD70M, SD70MAC, SD70ACU;<br/>EMD HTCR-4: SD70M, SD70MAC, SD70ACe;<br/>EMD HTCR-6: SD70ACe, SD70ACe-T4;<br/>EMD HTSC-II: SD70M, SD70ACe, SD70ACe/LCi, SD70ACS, SD70ACe/45;<br/>EMD GBB: SD70ACe-BB
| cylindercount = 16<br/>12 for SD70ACe-T4
| primemover = [[Electro-Motive Diesel|EMD]] [[EMD 710|16-710G3]] 2-stroke diesel;<br/>[[Electro-Motive Diesel|EMD]] [[EMD 1010|12-1010J]] 4-stroke diesel for SD70ACe-T4
| enginetype = [[V16 engine|V16]];<br/>[[V12 engine|V12]] for SD70ACe-T4
| totalproduction = SD70: 122<br/>SD70I: 26<br/>SD70M: 1,758<br/>SD70M-2: 363<br/>SD70MAC: 1,154<br/>SD70ACe: 2,134<br/>SD70ACe/lc: 205<br/>SD70ACS: 86<br/> SD70ACe-P4: 80<br/>  SD70ACe-P6: 50<br/> SD70ACe-T4: 176<br/>SD70ACe-BB: 64<br/>SD70ACe/45: 537
| operator = 
| disposition = Many operational, several retired due to wrecks, one preserved.
| locale = North America, Brazil, Peru, Guinea, Mauritania, Saudi Arabia, United Arab Emirates
| fleetnumbers = 
| nicknames = Vacuum Cleaners (SD70ACe-T4) Thundercabs (Early SD70ACe models)
}}
The '''EMD SD70''' is a series of [[diesel-electric locomotive]]s produced by the US company [[Electro-Motive Diesel]]. This locomotive family is an extension and improvement of the [[EMD SD60|EMD SD60 series]]. Production commenced in late 1992<ref name="Solomon 2011">{{Harvnb|Solomon|2011}}</ref>{{page needed|date=March 2017}} and since then over 5,700 units have been produced; most of these are the SD70M, SD70MAC, and SD70ACe models. While the majority of the production was ordered for use in North America, various models of the series have been used worldwide. All locomotives of this series are [[hood unit]]s with [[AAR wheel arrangement#C-C|C-C]] [[Bogie|trucks]], except the SD70ACe-P4 and SD70MACH which have a [[AAR wheel arrangement#B1-1B|B1-1B]] wheel configuration, and the SD70ACe-BB, which has a [[AAR wheel arrangement#B+B-B+B|B+B-B+B]] wheel arrangement.

Superseding the HT-C truck, a new bolsterless radial [[Radial steering truck|HTCR truck]] was fitted to all EMD SD70s built 1992–2002; in 2003 the non-radial HTSC truck (basically the HTCR made less costly by removing radial components) was made standard on the SD70ACe and SD70M-2 models; the radial HTCR truck remained available as an option.

==Models==

===SD70 (1992–1999)===
[[File:IC1004 EMD SD70.jpg|thumb|[[Illinois Central]] SD70 No. 1004]]
The EMD SD70 typically has the smaller [[cab (locomotive)|''spartan cab'']], typical on preceding [[EMD SD60|SD60]] models, instead of the larger ''comfort cab'' used on later models. Notable differences between the SD70 and SD60 are the [[Radial steering truck|radial steering EMD HTCR truck]] instead of the older HTC truck, and the SD70's overall length of {{convert|72|ft|4|in|m|abbr=on}}, with the older SD60 being 2 inches shorter. The SD70 also rides higher as its frame is approximately {{convert|1/2|in|mm}} higher than the SD60. This model is equipped with [[direct current]] (DC) [[traction motor]]s, which simplifies the locomotive's electrical system by obviating the need for computer-controlled [[inverter (electrical)|inverters]] (as are required for [[alternating current]] (AC) power). It is equipped with the {{convert|4,000|hp|kW}}, 16-cylinder [[EMD 710]] [[Prime mover (locomotive)|prime mover]]. One hundred and twenty-two examples of this model locomotive were produced for [[Norfolk Southern]] (NS), [[Conrail]] (CR), [[Illinois Central]] (IC) and [[Southern Peru Copper Corporation]] (SPCC). [[Conrail]]'s assets were split between Norfolk Southern and [[CSX]] in 1999, and all 24 of Conrail's SD70 units went to NS. Other than the CR paint scheme these units were built to NS specifications and numbered (2557 - 2580) in series with Norfolk Southern's already purchased SD70s.

Production of the standard cab at EMD's [[London, Ontario]] plant ended in 1999. The 24 [[Conrail]] SD70s were assembled from kits at Conrail's [[Juniata Shops]] in [[Altoona, Pennsylvania]], while the IC and SPCC SD70s were assembled from kits at Super Steel Schenectady. Most SD70s are still in service with [[Norfolk Southern Railway|Norfolk Southern]] and [[Canadian National]] (CN), which merged with [[Illinois Central Railroad|Illinois Central]] in 1999. In February 2017, NS began a program to convert its SD70s from DC to AC, which will also have a new wide-nose cab, and several other upgrades. They will be designated as SD70ACC.

===SD70M (1992–2004)===
[[File:UP 4352 Fairbury, NE 7-23-14 (1).jpg|thumb|[[Union Pacific]] SD70M No. 4352]]
The SD70M has a [[Short hood#Styles|wide nose]] and a large ''[[comfort cab]]'' (officially known as the "North American Safety Cab"), allowing crew members to ride more comfortably inside of the locomotive than the older standard cab designs.  There are two versions of this cab on SD70Ms: the Phase 1 cab, which was first introduced on the [[SD60M]], and the Phase 2 cab, which is a boxier design similar to the original three-piece windscreen on the SD60M, which is shared with the Phase 2 [[EMD SD90MAC|SD90MAC]], [[EMD SD89MAC|SD89MAC]], and [[EMD SD80MAC|SD80ACe]]. The Phase 2 cab has a two-piece windscreen like the Phase 1 windscreen but the design of the nose is more boxy, with a taller square midsection for more headroom.

The SD70M is equipped with D90TR DC traction motors and the [[EMD 710G3B|710G3B]] [[Prime mover (locomotive)|prime mover]].<ref name="Solomon 2006">{{Harvnb|Solomon|2006}}</ref>{{page needed|date=March 2017}} They are capable of generating {{convert|109,000|lbf|kN|abbr=on}} of continuous [[tractive effort]].<ref name="Solomon 2006"/>{{page needed|date=March 2017}} From late 2001, the SD70M was produced with [[EMD SD45|SD45]]-style flared radiators allowing for the larger radiator cores needed for split-cooling. Split-cooling is a feature that separates the coolant circuit for the prime mover and the circuit for the air pumps and [[Turbocharger#Marine and land-based diesel turbochargers|turbocharger]].  There are two versions of this radiator: the older version has two large radiator panels on each side, and the newer version has four square panels on each side.  This modification was made in response to the enactment of the [[United States Environmental Protection Agency]]'s (EPA) Tier 1 environmental regulations. Also the truck was replaced with HTCR-4, instead of HTCR-I on former model.

Production of the SD70M ceased in late 2004 as production of the SD70M-2 model began (the EPA's Tier 2 regulations went into effect on 1 January 2005). 1,609 examples of the SD70M model were produced. Purchasers included [[New York, Susquehanna & Western]] (NYSW; part of EMDX order no. 946531<ref>{{cite web|title=Order # 946531, SD70M|url=http://www.trainweb.org/emdloco/946531.htm|work=The UNofficial EMD Homepage|access-date=24 January 2012}}</ref>), [[Norfolk Southern]] and [[Southern Pacific Transportation Company|Southern Pacific]] (SP; now part of the Union Pacific Railroad), but the vast majority were purchased by [[Union Pacific]].

In 2000, an order of SD70Ms made history when [[Union Pacific]] ordered 1000 units of the model (UP 4000 through UP 4999, inclusive, although 4014 was renumbered 4479 to accommodate [[Union Pacific Big Boy|Big Boy]] [[Union Pacific 4014|4014]] in 2019<ref>{{Cite web|url=https://trn.trains.com/news/news-wire/2019/05/16-diesel-no-4014-gets-new-number-ahead-of-big-boy-debut|title=Diesel No. 4014 gets new number ahead of Big Boy debut &#124|website=[[Trains (magazine)|Trains]]|access-date=September 3, 2019|archive-date=May 28, 2019|archive-url=https://web.archive.org/web/20190528225142/https://trn.trains.com/news/news-wire/2019/05/16-diesel-no-4014-gets-new-number-ahead-of-big-boy-debut|url-status=dead}}</ref>). This order was later extended by nearly 500 additional units (UP 3999 and below, UP 5000 and above, except for 3985, which was left vacant for [[Union Pacific Challenger|Challenger]] [[Union Pacific 3985|3985]]).

This locomotive model is also built for export, and is still catalogued by EMD (at {{convert|4300|hp|kW|abbr=on|disp=or}}). [[Corporación Venezolana de Guayana|CVG]] Ferrominera Orinoco has 6 SD70Ms that were built as an add-on order to UPs FIRE cab equipped SD70Ms. [[Companhia Vale do Rio Doce]] (CVRD) in [[Brazil]] has ordered 55 of this model for service for the [[Carajás mine]] pulling trainloads of [[iron ore]].  Since CVRD track is [[rail gauge|gauged]] at {{track gauge|1600mm}}, a wider [[bogie]], the HTSC2, was designed for these units by EMD.<ref>{{cite web |url=http://www.emdiesels.com/en/locomotive/international/sd70m/index.htm |title=SD70M for CVRD |publisher=Electro-Motive Diesels |access-date=2005-12-01  |archive-url=https://web.archive.org/web/20080515162457/http://www.emdiesels.com/en/locomotive/international/sd70m/index.htm |archive-date=2008-05-15 }}</ref>

===SD70I (1995)===
[[File:CN SD70I 5619.png|thumb|[[Canadian National]] SD70I No. 5619]]
The SD70I is a version of the SD70 which has been fitted with a cab that is isolated from the frame of the locomotive with rubber gaskets (officially known as a "WhisperCab"). The isolation reduces noise and vibration from the prime mover.  A seam is visible across the nose and on the long hood where the cab connects with the body. 26 examples of this model locomotive were produced, all for [[Canadian National]]. The WhisperCab feature was incorporated into some SD70MACs and was standard on both the  SD80MAC and SD90/43MAC models.

===SD70MAC (1993–2007)===
[[File:Alaska Railroad EMD SD70 (ARR 4006) at Fairbanks Depot.jpg|thumb|[[Alaska Railroad]] SD70MAC No. 4006 "Spirit of Anchorage"]]
The SD70MAC uses three phase [[Alternating current|AC]] traction motors. Production of the model commenced in 1993, competing against the [[GE AC4400CW]]. The majority of SD70MAC models were produced with the {{convert|4000|hp|kW}} EMD 710 prime mover while later units are rated at {{convert|4300|hp|kW}} and feature [[EMD SD45]]-style flared radiators.{{citation needed|date=September 2023}} Starting in 1993, the Alaska Railroad ordered SD70MACs with [[head-end power]] to make them suitable for both freight and passenger service; no other railroad ordered this variant. Due to the Alaska Railroad's satisfaction with these locomotives, they specially ordered additional models after EMD had transitioned production to the [[#SD70ACe (2004–present)|SD70ACe]].The last order of Alaska Railroad SD70MACs was built/delivered in late 2007.<ref>{{Cite magazine |last=Swanson |first=Carl |date=2023-09-19 |title=Alaska Railroad's SD70MACs |url=https://www.trains.com/trn/railroads/locomotives/alaska-railroads-sd70macs/ |access-date=2023-09-26 |website=Trains |language=en-US}}</ref><ref>{{Cite web|url = http://www.mobility.siemens.com/mobility/global/SiteCollectionDocuments/en/logistics/cargo-transport/reference-list-locomotives-en.pdf|title = Locomotives Reference List|publisher = Siemens |archive-url=https://web.archive.org/web/20130703094605/http://www.mobility.siemens.com/mobility/global/SiteCollectionDocuments/en/logistics/cargo-transport/reference-list-locomotives-en.pdf |archive-date=2013-07-03 |url-status=dead}}</ref> The trucks were replaced with HTCR-4, instead of HTCR-I on former model.{{citation needed|date=September 2023}}{{clarification needed|date=September 2023}}
[[File:CSX Loco No.4761.jpg|thumb|[[CSX]] SD70MAC No. 4761 with [[EMD SD45|SD45]]-style flared radiators]]

The SD70MAC is no longer produced due to EPA regulations, and was replaced by the SD70ACe in 2004. In total, 1,109 SD70MACs were produced, purchased by [[Burlington Northern]] (and its successor, [[BNSF]]), [[Conrail]], [[CSX]], [[Kansas City Southern de México|Transportación Ferroviaria Mexicana]] (TFM; units now owned by [[Kansas City Southern Railway]] (KCS)), and the [[Alaska Railroad]].
{{clear|left}}

===SD70ACe (2004–present) ===
[[File:UP 8505.jpg|thumb|[[Union Pacific Railroad|Union Pacific]] No. 8505 leads a coal train]]
The '''SD70ACe''' is the successor to the SD70MAC with design changes to comply with emission standards. The engine fires with 15% lower internal pressure to improve emissions and features fewer internal components in the inverter.<ref>{{Cite book|last=Solomon|first=Brian|url=https://books.google.com/books?id=yZMeDAAAQBAJ&pg=PA22|title=Field Guide to Trains: Locomotives and Rolling Stock|date=2016-05-01|publisher=Voyageur Press|isbn=978-0-7603-5126-0|pages=22–23|language=en}}</ref> The SD70ACe is equipped with EMD's 16-710-G3C-T2 prime mover, rated at {{convert|4300|hp}}; later Tier 3 models are rated at {{convert|4500|hp|kW}}, and have a [[thermal efficiency]] of almost 36%.<ref name=emd_sd70ace>{{cite web|title=SD70ACe|url=http://www.emdiesels.com/emdweb/products/sd70ace.jsp|access-date=26 January 2012|author=ElectroMotive}}</ref> They are rated at {{convert|191,000|lbf|kN|abbr=on}} starting tractive effort and {{convert|157,000|lbf|kN|abbr=on}} continuous. Braking effort is rated at {{convert|106,000|lbf|kN|abbr=on}}. Early models featured a bad cab design which was noticed first on CSX as crews reported annoying disturbances such as prime mover noises, traction motors and more. The cab was also known for rattling, leading to the nickname "Thundercabs". As a result, these units are also not approved for leading trains.<ref name=emd_sd70ace/>

In 2012, EMD also built four models known as the '''SD70ACe-P6'''. These units, unlike previous SD70ACe's, have one inverter per axle on the trucks, rather than EMD's traditional one inverter per truck design. Four of those (EMDX 1206, 1208, 1209 and 1210) were sold to Canadian National Railway and renumbered to CN 8100–8103.{{Citation needed|date=May 2020}}

In 2014, BNSF Railway took delivery of 20 '''SD70ACe-P4''' units, numbered 8500 - 8519. This model was designed with a B1-1B wheel arrangement to compete with GE's [[ES44C4]] model, which has an A1A-A1A wheel arrangement. Both wheel arrangements mean that there are only two [[traction motors]] per truck instead of three, those being the ones next to the fuel tank.  Two SD70ACe-P4 demonstrators began a 5-year lease at [[Tacoma Rail]] in late 2014, and were later sold to Arkansas & Missouri Railroad in late 2023.

On January 1, 2015, the [[United States Environmental Protection Agency]]'s Tier 4 locomotive emission regulations went into effect. EMD could not successfully modify the SD70ACe's 2-stroke 710 series prime mover to be Tier 4-compliant; thus, the Tier 3 SD70ACe was succeeded by the '''SD70ACe-T4''' in late 2015. However, US production of the Tier 3-compliant SD70ACe continues with Tier 4 'credit units' (new Tier 3-compliant units EMD is entitled to build based on previously earned emissions credits). [[Union Pacific Railroad|Union Pacific]] and Norfolk Southern are currently the only US roads to own Tier 4 credit unit SD70ACe's. Additionally, EMD has continued building Tier 3 SD70ACe's for [[Ferromex]] (4100–4118), [[Ferrosur]] (4119–4133), and [[Kansas City Southern de Mexico]] (4200–4224) at [[Bombardier Ciudad Sahagun]]. These locomotives are restricted to Mexico-only operation and cannot cross the US border (just as Canadian National's newest Tier 3 GE ES44AC's are restricted to Canadian use only).{{Citation needed|date=September 2021}}

In March 2016, EMD replaced the standard cast HTCR-4 trucks on NS SD70ACe 1000 with the new fabricated HTCR-6 trucks for testing. UP and BNSF plan to test the new '''HTCR-6''' trucks on some of their SD70ACe units also.

[[Union Pacific Railroad|Union Pacific]] received 281 additional SD70ACe units, numbered 8824 - 9104, in 2014, 2016 and 2018. These are referred to as '''SD70AH (T4C)''', H for "heavy", because they are ballasted to {{convert|428000|lb|kg|0|abbr=on}} rather than {{convert|420000|lb|kg|0|abbr=on}}.

====2TE3250 (2021)====

In mid-2021, the [[Yakutian Railway]] received two SD70ACes, designated 2TE3250 ({{langx|ru|2ТЭ3250|link=no}}) by Yakutian Railway itself. These units, numbered 0001 and 0002, are currently in use in [[Sakha Republic|Yakutia]], and are operated as a two-section locomotive.<ref>{{cite web |title=EMD Locomotive At Yakutian Railways |url=https://www.railvolution.net/news/emd-locomotive-at-yakutian-railways |website=Railvolution |access-date=30 December 2023 |language=en}}</ref><ref>{{cite web |title=Progress Rail locomotive on test in Russia |url=https://www.railwaygazette.com/traction-and-rolling-stock/progress-rail-locomotive-on-test-in-russia/59027.article |website=Railway Gazette International |access-date=30 December 2023 |language=en}}</ref>

In November 2021, Yakutian Railway announced a tender for 6 more, single-section locomotives.<ref>{{cite web |last1=Batrak |first1=Oleksandr |title=The Railways of Yakutia announced a tender for the supply of 6 gas-fueled diesel locomotives for 2.4 billion rubles. |url=https://www.railway.supply/en/the-railways-of-yakutia-announced-a-tender-for-the-supply-of-6-gas-fueled-diesel-locomotives-for-2-4-billion-rubles/ |website=Railway Supply |access-date=30 December 2023 |date=5 November 2021}}</ref> However, as of 4 February 2022, it has been unable to make an order for them.<ref>{{cite web |title=Progress Rail was unable to offer Yakutia Railways locomotives at the required price |url=https://rollingstockworld.com/locomotives/progress-rail-was-unable-to-offer-yakutia-railways-locomotives-at-the-required-price/ |website=Rolling Stock World |access-date=30 December 2023 |date=4 February 2022}}</ref>

===SD70M-2 (2004–2011)===
[[File:CN 8951 (7968608928).jpg|thumb|[[Canadian National]] SD70M-2 No. 8951]]
The SD70M-2 is a [[Direct current|DC]] traction version of the SD70ACe. The "-2" in the model name indicates that the units are EPA Tier II compliant and that the locomotive has upgraded electronics, which was true for older models ([[EMD SD40-2]]).<ref>{{Cite web |last=Guss |first=Chris |date=2024-02-20 |title=The evolution of EMD's SD70-series locomotives |url=https://www.trains.com/trn/railroads/locomotives/the-evolution-of-emds-sd70-series-locomotives/ |url-status=live |archive-url=https://web.archive.org/web/20240220154239/https://www.trains.com/trn/railroads/locomotives/the-evolution-of-emds-sd70-series-locomotives/ |archive-date=20 February 2024 |access-date=2024-03-05 |website=[[Trains magazine|Trains]] |language=en-US}}</ref> SD70M-2 models are equipped with the 16-710G3C-T2 or 16-710G3C prime mover which is rated at {{convert|4300|hp}}.<ref name=emdiesels_sd70m2>{{cite web|title=SD70M-2|url=http://www.emdiesels.com/emdweb/products/sd70m.jsp|access-date=26 January 2012|author=ElectroMotive| url-status=dead| archive-url=https://web.archive.org/web/20120123044442/http://www.emdiesels.com/emdweb/products/sd70m.jsp| archive-date=January 23, 2012}}</ref>

In total, 331 SD70M-2s were built, with [[Canadian National]] owning 190 units. Eight units owned by [[Electro-Motive Diesel]] and four units owned by [[CIT Group|CIT Financial]] were leased by [[Florida East Coast Railway]] until early 2015. Canadian National 8964 was the last SD70M-2, built in February 2011. [[Vermont Railway]] owns 2 units numbered 431 and 432. [[Norfolk Southern]] ordered 130 SD70M-2s, of which 46 remained in service as of July 2023 with 2 units rebuilt with AC traction.<ref>{{cite web |last1=Toth |first1=Chris R. |title=Norfolk Southern 1982 to Present (July 11, 2023) |url=http://www.nsdash9.com/atroster.html |website=nsdash9.com |publisher=Trainorders.com |access-date=13 July 2023}}</ref><ref>{{cite web |title=They're Back... NS SD70M-2 2670 Leading NS B10! 3-2-23 |url=https://m.youtube.com/watch?v=bXnL8OysgXY|website=m.youtube.com | date=March 2, 2023 |publisher=Zach 1227 Rail Videos |access-date=13 July 2023}}</ref><ref>{{cite web |title=The Return Of The NS SD70M-2! NS 19M With Two NS SD70M-2 Locomotives! 1-15-23 |url=https://m.youtube.com/watch?v=KeN9kipj5Tc |website=m.youtube.com | date=January 15, 2023 |publisher=Zach 1227 Rail Videos |access-date=13 July 2023}}</ref>
Currently, [[NBM Railways]] owns 13 SD70M-2, former NS units, numbered 6401–6413 with plans for six more rounding it out to 6419. All are marked for the various NBM companies, [[New Brunswick Southern Railway]], [[Eastern Maine Railway (1995)|Eastern Maine Railway]], and [[Maine Northern Railway]].

===SD70ACe-T4 (2015–present) ===
[[File:UP 3032-EMD SD70ACe-T4.jpg|thumb|[[Union Pacific]] SD70ACe-T4 No. 3032]]
The '''SD70ACe-T4''' is the Tier 4 emissions standards-compliant successor of the SD70ACe. The first locomotive, EMDX 1501, was built in summer 2015, and made its debut at the Railway Interchange Expo in Minneapolis, Minnesota during the weekend of October 3–4, 2015. It features a new 4-stroke engine called the [[EMD 12-1010]] "J" series - a V12 with 1,010 in<sup>3</sup> displacement for each cylinder. This new prime mover has a two-stage turbocharger system consisting of three turbos; one turbo (the primary/high pressure turbo) for low-mid RPM and two turbos (the secondary/low pressure turbos) for mid-high RPM. The results of this setup are higher power throughout a broader RPM range, better fuel efficiency, and lower emissions. An EGR system is applied as well, allowing the engine to achieve Tier 4 without the use of urea aftertreatment. Another new feature of this engine is the Double-Walled Fuel Injection System that increases safety and provides simplified maintenance works.

The EMD 12-1010 is capable of producing {{convert|4600|hp|kW}} total, {{convert|4400|hp|kW}} is used for traction.<ref name=":1">{{cite web| url=https://s7d2.scene7.com/is/content/Caterpillar/C10678841| title=The SD70ACe-T4™ Locomotive}}</ref> With a new computer software for the on-board computer and one inverter per axle (or "P6"; EMD named it "Individual Axle Control") - unlike most of previous EMD locomotives that use one inverter per truck, the SD70ACe-T4 is capable of generating {{convert|200000|lbf|kN}} of starting tractive effort, and {{convert|175000|lbf|kN}} of continuous tractive effort. Meanwhile, its dynamic braking effort is as much as {{convert|105000|lbf|kN}}. The amount of starting tractive effort is equal to that of the {{convert|6000|hp|kW}} SD90MAC-H while, on the other hand, its continuous tractive effort is higher than that of the SD90MAC-H ({{convert|175000|lbf|kN}} vs. {{convert|165000|lbf|kN}}). The units are also equipped with "radial bogies" which offer increased adhesion and better ride quality.<ref name=":1" />

While it retains the basic '''SD70''' designation, the locomotive has several major new features that set it apart from its successful ancestor such as a vibration-isolated powertrain, and alternator start capability. In addition, it features a newly redesigned cab reminiscent of the earlier SD70M, featuring the classic "teardrop" windshields first introduced on the [[EMD FP45|FP45]] in December 1967; new fabricated trucks; a longer frame at {{convert|76|ft|8|in|m}}; longer radiators with three radiator fans instead of two; an additional step on the front and rear; and a smoother long hood roofline.<ref>{{cite web| url=http://trn.trains.com/news/news-wire/2015/09/29-emd-news| title=EMD ships first Tier 4 locomotive to Railway Interchange show| website=Trains Magazine| date=29 September 2015| access-date=30 September 2015| url-status=dead| archive-url=https://web.archive.org/web/20150930233814/http://trn.trains.com/news/news-wire/2015/09/29-emd-news| archive-date=September 30, 2015}}</ref><ref>{{Cite web| title=EMD SD70ACe-T4 Freight Locomotive| url=http://www.progressrail.com/en/products/locomotives/freight/sd70acet4.html| website=Progress Rail| access-date=2016-01-07| url-status=dead| archive-url=https://web.archive.org/web/20160114121748/http://www.progressrail.com/en/products/locomotives/freight/sd70acet4.html| archive-date=January 14, 2016}}</ref><ref>{{Cite web| url=https://www.youtube.com/watch?v=w9w7Ac1Cnsw| title=EMD SD70ACe-T4 Locomotive| access-date=2016-01-07| author=Progress Rail| website=YouTube| date=October 4, 2015}}</ref><ref>{{cite web| title=EMD unveils its first Tier 4 diesel locomotive| url=http://www.railwaygazette.com/news/traction-rolling-stock/single-view/view/emd-unveils-its-first-tier-4-diesel-locomotive.html| date=5 October 2015| access-date=2016-07-27| website=[[Railway Gazette International]]| archive-date=October 9, 2016| archive-url=https://web.archive.org/web/20161009192625/http://www.railwaygazette.com/news/traction-rolling-stock/single-view/view/emd-unveils-its-first-tier-4-diesel-locomotive.html| url-status=dead}}</ref>

Fifteen '''SD70ACe-T4''' demonstrators were built at Muncie, Indiana by November 2016. [[Union Pacific]] was the first customer to order SD70ACe-T4's. UP 3012–3014, the first production SD70ACe-T4's, were assigned to active service in early November 2016.

Union Pacific acquired 100 SD70ACe-T4's: 12 former demonstrators rostered as UP 3000–3011, and 88 production units (3012–3099). 3012-3056 were built at Bombardier's Sahagun, Mexico plant. 3057-3099 will be built at Muncie, IN, following completion of the Tier 4 credit SD70ACe's UP 8997–9096. All UP SD70ACe-T4's are classified as '''SD70AHs'''.

'''SD70ACeP4-T4's''' EMDX 1603 and 1604 were built and painted as demonstrators for the [[BNSF Railway]]. These units have a B1-1B wheel arrangement akin to the SD70ACe-P4.

In August 2018, CSX Transportation ordered 10 SD70ACe-T4's. They were classified by CSX as '''ST70AH'''. In July 2023, CSX Transportation sidelined their ST70AH locomotives due to the leasing agreement being expired. All 10 have been taken back to PRLX and will more than likely be used as parts or on the lease fleet.

Norfolk Southern originally ordered 10 SD70ACe-T4's, but opted for more SD70ACe Tier-4 credit locomotives instead. The cancelled units are currently part of the [[Progress Rail]] lease fleet.

EMDX 1501 will remain in [[Progress Rail Services]] ownership as a test bed.

===SD70ACe/LCi (2005–present) ===
[[File:BHPB Iron Ore 4308 + 4373.JPG|thumb|[[BHP]] SD70ACe/LCi No. 4308]]
The SD70ACe/LCi is a low clearance, export version of the SD70ACe. The ''LCi'' in the model designation stands for ''Low Clearance international'' as these locomotives are designed to negotiate the tight clearances under the mine equipment. External differences between the SD70ACe and SD70ACe/LCi models include the addition of marker lights, number boards located lower on the nose rather than on top of the cab, windscreen protector panels (to deflect abrasive iron ore when in mid train position), fire suppression canisters, louvre style vents, different horn and subtle differences with handrails.<ref name="Montgomery 2009">{{Harvnb|Montgomery|2009}}</ref>{{page needed|date=March 2017}}

In 2004, [[BHP|BHP Billiton]] ordered 14 SD70ACe/LCi locomotives for use on iron ore trains in the [[Pilbara]] region of [[Western Australia]].<ref>World Market ''[[International Railway Journal]]'' January 2005 page 11</ref> The first member of the class (4300) was purchased for parts and dismantled upon arrival in Australia. This was because it was cheaper to purchase a complete locomotive than buy the components individually.<ref name="LOberg">{{Harvnb|Oberg|2010|pp=435–436}}</ref><ref name="PClark">{{Harvnb|Clark|2012|pp=215–218}}</ref> They were named after sidings on the BHP system.<ref name="Montgomery 2009"/>{{page needed|date=March 2017}}<ref>{{cite web| url=http://www.pilbararailways.com.au/bhp/loco/bhpb-roster.html| title=BHP Billiton Loco Roster| url-status=dead| archive-url=https://web.archive.org/web/20120308172108/http://www.pilbararailways.com.au/bhp/loco/bhpb-roster.html| archive-date=8 March 2012| website=Pilbara Railways}}</ref> Since they did not have the newer, isolated cab of the second and subsequent batches, 4301–4313 were traded in to [[Progress Rail]] for locomotives with newer cab assemblies and repatriated to the United States in January 2015 being taken to [[Muncie, Indiana]] for store.<ref>Motive Power Roundup ''[[Motive Power]]'' issue 99 May 2015 page 75</ref> They were overhauled and sold to [[Chemin de fer Arnaud]] (4), [[Montana Rail Link]] (4) and [[Quebec North Shore & Labrador]] (5).<ref name=MP128>Motive Power Roundup ''Motive Power'' issue 128 March 2020 page 74</ref>

BHP operated in 2015 a fleet of 23 SD70ACe/LCi locomotives beside of 142 standard SD70ACe, from which the newest locomotives are built in 2014.<ref name=":0">{{Cite web| title=BHP Billiton Iron Ore Road Locomotive Roster| url=http://www.pilbararailways.com.au/bhp/loco/bhpb-roster.php| website=Pilbara Railway Pages| access-date = 2016-01-07| archive-url=https://web.archive.org/web/20160103160428/http://www.pilbararailways.com.au/bhp/loco/bhpb-roster.php| archive-date=January 3, 2016| url-status=dead}}</ref>

The second batch of 10 SD70ACes (4314–4323) arrived between August and November 2006. An order for a third batch of 13 SD70ACe/LCi's (4334–4346) was placed in August 2007, but such was the demand for locomotive power in the [[Pilbara]] region, a deal was done with [[BNSF]] for BHP Billiton to purchase ten standard North American SD70ACes (4324–4333) that were in build as their 9166, 9167, 9184–9191. Construction was sufficiently advanced when the deal was concluded for them to have been painted, hence they were delivered in BNSF orange livery. Some modifications have been made to bring them in line with the rest of the fleet. A fifth batch of SD70ACes (Numbers 4347–4355) was delivered in July 2009.<ref name="Montgomery 2009"/>{{page needed|date=March 2017}}<ref name="LOberg" />

An additional 18 units (numbers 4356–4373) were delivered in the second half of 2010, bringing the total of SD70ACe type locomotives in service to 72.<ref name="PClark" /> In March 2012, BHP Billiton ordered a further 80.<ref>{{cite web| title=BHP Billiton places large heavy haul locomotive order| url=http://www.railwaygazette.com/index.php?id=44&no_cache=1&tx_ttnews%5Btt_news%5D=14888&cHash=dfa4e0a712627bcef96cef5c074792f4| website=Railway Gazette International| access-date=14 March 2012| archive-url=https://web.archive.org/web/20120305202844/http://www.railwaygazette.com/index.php?id=44&no_cache=1&tx_ttnews%5Btt_news%5D=14888&cHash=dfa4e0a712627bcef96cef5c074792f4| archive-date=5 March 2012| date=2 March 2012| url-status=dead}}</ref> As at October 2020, BHP operated 10 SD70ACes (4324–4333) and 174 SD70 Ace/LCis (4314–4323, 4334–4497)<ref>Australia Wide Fleet List ''Motive Power'' issue 132 November 2020 pages 52/53</ref>

In July 2012 fellow Pilbara operator, [[Fortescue railway|Fortescue Metals Group]], took the delivery of the first of a fleet of 19, later extended to 21 (701–721).<ref name=PClark/><ref>{{cite web| url=http://www.railway-technology.com/news/newsdowner-to-build-19-locomotives-for-fortescue| title=Downer to build 19 locomotives for Fortescue| website=Railway Technology| date=26 June 2012| access-date=February 19, 2014| archive-date=February 21, 2014| archive-url=https://web.archive.org/web/20140221183824/http://www.railway-technology.com/news/newsdowner-to-build-19-locomotives-for-fortescue| url-status=dead}}</ref><ref name=FortescueMay13>{{cite web| url=http://www.fmgl.com.au/UserDir/FMGResources/Download/en/FACT%20SHEET_Fortescue%20Rail_May2013_PressQuality_Final31.pdf| title=Fortescue Rail Fact Sheet| url-status=dead| archive-url=https://web.archive.org/web/20140223101817/http://www.fmgl.com.au/UserDir/FMGResources/Download/en/FACT%20SHEET_Fortescue%20Rail_May2013_PressQuality_Final31.pdf| archive-date=23 February 2014| website=Fortescue Metals Group| date=May 2013}}</ref>

===SD70ACS (2009–present) ===
[[File:SD70ACS EMDX 3025 2010-10-08.jpg|thumb|[[Saudi Railway Company]] EMDX SD70ACS No. 3025]]
The SD70ACS is a {{convert|4500|hp}} AC variant for heavy haul freight, used in desert environments. The first 25 units were ordered for Saudi Railway Company in April 2009 and assembled in the [[London, Ontario]], plant for delivery in the second half of 2010. Special features include a pulse filtration system, movable sand plows, EM2000 control system and [[Functionality Integrated Railroad Electronics|FIRE]] display system.<ref>{{Cite press release| title=Electro-Motive Diesel, Inc. Wins New Locomotive Contract for 25 SD70ACS Locomotives from Saudi Railway Company (SAR)| url=http://www.emdiesels.com/emdweb/company/more/040709_sar.html| url-status=dead| archive-url=https://web.archive.org/web/20160304030739/http://www.emdiesels.com/emdweb/company/more/040709_sar.html| archive-date=March 4, 2016| website=EMD| access-date=2016-01-07}}</ref>

Mauritania's [[Mauritania Railway|Société Nationale Industrielle et Minière]] placed a contract for six SD70ACS locomotives in October 2010.<ref>{{cite news| url=http://www.railwaygazette.com/nc/news/single-view/view/high-temperature-locomotives-ordered-from-emd.html| title=High temperature locomotives ordered from EMD| date=20 October 2010| website=Railway Gazette International| access-date=August 1, 2011| archive-date=June 15, 2011| archive-url=https://web.archive.org/web/20110615194015/http://www.railwaygazette.com/nc/news/single-view/view/high-temperature-locomotives-ordered-from-emd.html| url-status=dead}}</ref>

In July 2011 [[Etihad Rail]] ordered seven SD70ACS locomotives for delivery in 2012.<ref name=rgi20110801>{{cite news| url=http://www.railwaygazette.com/nc/news/single-view/view/etihad-rail-orders-emd-locomotives.html| title=Etihad Rail orders EMD locomotives| date=1 August 2011| website=Railway Gazette International| access-date=August 1, 2011| archive-date=June 24, 2020| archive-url=https://web.archive.org/web/20200624171638/https://www.railwaygazette.com/nc/news/single-view/view/etihad-rail-orders-emd-locomotives.html| url-status=dead}}</ref> Seven locomotives were delivered in 2013.<ref name="rg27022020">{{cite web| url=https://www.railwaygazette.com/traction-and-rolling-stock/etihad-rail-orders-38-locomotives/55901.article| title=Etihad Rail orders 38 locomotives| date=27 February 2020| website=Railway Gazette International| publisher=DVV Media International| access-date=27 February 2020| archive-url=https://archive.today/20210604144512/https://www.railwaygazette.com/traction-and-rolling-stock/etihad-rail-orders-38-locomotives/55901.article| archive-date=June 4, 2021| url-status=live| quote=<!--These will add to the seven 4 500 hp EMD SD70ACS locomotives delivered in 2013 for the opening of the 264 km first phase of the network.--> }}</ref>

===SD70ACe-BB (2015–present) ===
In October 2015, EMD started producing SD70ACe-BB locomotives for Brazilian {{track gauge|metre|lk=on}} railroads.<ref>{{Cite web| url=https://www.progressrail.com/en/Segments/RollingStock/Locomotives/FreightLocomotives/SD70ACe-BB.html| title=EMD® SD70ACe-BB| website=Progress Rail}}</ref> Unlike the standard SD70ACe, the SD70ACe-BB has a [[B+B-B+B]] wheel arrangement, meaning that it has eight axles instead of six. To fit the [[Span bolster#Locomotives|B+B trucks]], the SD70ACe-BB was elongated to {{convert|74|ft|9|in|m|abbr=on}}, making it {{convert|2|ft|5|in|m|abbr=on}} longer than the standard SD70ACe.

===SD70ACe/45 (2004–present) ===
[[File:EMD SD70ACe45 9558 Eldorado.JPG|thumb|Eldorado Brasil SD70ACe/45 No. 9558]]	
The SD70ACe/45 is a diesel-electric locomotive built by EMD plant in Sete Lagoas, MG Brazil. Different from the SD70ACe in North America, the SD70ACe/45 has a longer frame (76&nbsp;ft. 6 in.) and three radiator fans on the radiator section since it uses the same car body of the SD80ACe produced by EMD plant in London, Canada to Vale mining in Brazil. It uses {{track gauge|1600mm}} gauge. 80 SD70ACe/45s had been built.<ref>{{Cite web| url=https://www.progressrail.com/en/Segments/RollingStock/Locomotives/FreightLocomotives/SD70ACe-45.html| title=EMD® SD70ACe-BB| website=Progress Rail}}</ref>

===SD70IAC (2019–present) ===
In early 2019 with the delivery of the new SD70ACe-T4C locomotives to [[Norfolk Southern Railway|Norfolk Southern]], a new type of the T4C (Tier 4 Credit) locomotives was rolled out of Progress Rail in Muncie, Indiana. IAC stands for Individual Axle Control. They are still classified as SD70ACe's on the side of the locomotive but are designated as SD70IAC within the cab controls. The new IAC system improves the existing traction system.

===SD70ACe/LW (2007, 2021–present) ===
The SD70ACe/LW is designed specifically for rail networks using [[Russian gauge]], featuring a new isolated cab similar to the flat nosed cab of the GT46C-ACe Gen-II. The SD70ACe/LW has a 16-710G3C-T2 prime-mover with 4,500 horsepower. It uses an AC traction system with a top speed of 74&nbsp;mph (120&nbsp;km/h).<ref>{{Cite web| url=https://www.progressrail.com/en/Segments/RollingStock/Locomotives/FreightLocomotives/SD70ACe-LW.html| title=EMD® SD70ACe/LW| website=Progress Rail}}</ref> Although it was designed in 2007, the first orders only occurred in mid-2021, when 16 were purchased for the Mongolian [[Tavan Tolgoi-Gashuunsukhait Railway]] project.<ref>{{Cite web| url=https://www.railwayage.com/mechanical/locomotives/new-emd-power-for-mongolia/| title=New EMD Power for Mongolia| date=March 15, 2021| website=Railway Age}}</ref>

==Rebuilds==

===SD70ACU===
[[File:Ns train 238 with a SD70ACU.jpg|thumb|[[Norfolk Southern Railway|Norfolk Southern]] SD70ACU No. 7305]]
[[File:Cp 7029.jpg|thumb|[[Canadian Pacific Railway|Canadian Pacific]] SD70ACU No. 7029]][[File:BNSF 9753 (SD70MACe) (38416916162).jpg|thumb|[[BNSF Railway|BNSF]] SD70MACe No. 9753]]
The SD70ACU is a rebuild performed by [[Norfolk Southern]] and [[Progress Rail Services]]. It is originally an [[EMD SD90MAC|SD90MAC]] (or better known as a SD9043MAC) that has been rebuilt to replace its Siemens electrical components with equipment from Mitsubishi and replace the cab with the new EMD Phase-II cab to comply with the most recent safety requirements.<ref name=":2" />

100 of the 110 units Norfolk Southern purchased were originally SD9043MACs previously operated by [[Union Pacific]].<ref name=":2" /> The other 10 units were acquired by a trade with Cit Group for MP15DCs.{{Citation needed|date=June 2024}} All NS-owned SD9043MACs were rebuilt by NS at its shops in [[Altoona, Pennsylvania]].{{Citation needed|date=January 2024}} The first locomotives were released from the shop in January 2016.<ref name=":2">{{Cite web |last=Guss |first=Chris |date=2016-02-10 |title=NS progresses on its SD70ACU program NEWSWIRE |url=https://www.trains.com/trn/news-reviews/news-wire/10-altoona-sd70acu/ |url-status=live |archive-url=https://web.archive.org/web/20240114215549/https://www.trains.com/trn/news-reviews/news-wire/10-altoona-sd70acu/ |archive-date=14 January 2024 |access-date=2024-01-14 |website=[[Trains magazine|Trains]] |language=en-US}}</ref> By May 7, 2019, all 110 SD70ACU units owned by Norfolk Southern were completed and released to active service.{{Citation needed|date=January 2024}} 46 of these were sold in November 2020 with 30 of them going to Ferromex in 2024.{{Citation needed|date=January 2024}}

Canadian Pacific has also begun a program to convert their SD90MAC units into SD70ACUs, but unlike Norfolk Southern, Progress Rail is performing the rebuilds.<ref>{{Cite web |last=Cotey |first=Angela |date=2018-06-28 |title=Progress Rail announces 90MAC rebuild order from Canadian Pacific NEWSWIRE |url=https://www.trains.com/trn/news-reviews/news-wire/26-progress-rail-announces-90mac-rebuilt-order-from-canadian-pacific/ |url-status=live |archive-url=https://web.archive.org/web/20240624165610/https://www.trains.com/trn/news-reviews/news-wire/26-progress-rail-announces-90mac-rebuilt-order-from-canadian-pacific/ |archive-date=2024-06-24 |access-date=2024-06-24 |website=[[Trains (magazine)|Trains]] |language=en-US}}</ref> The initial order was for 30 units and then increased to 60.<ref name=":3">{{Cite web |last=Cotey |first=Angela |date=2019-08-22 |title=First Canadian Pacific SD70ACU locomotives delivered NEWSWIRE |url=https://www.trains.com/trn/news-reviews/news-wire/22-first-canadian-pacific-sd70acu-locomotives-delivered/ |url-status=live |archive-url=https://web.archive.org/web/20210501063454/https://www.trains.com/trn/news-reviews/news-wire/22-first-canadian-pacific-sd70acu-locomotives-delivered/ |archive-date=2021-05-01 |access-date=2024-06-24 |website=[[Trains (magazine)|Trains]] |language=en-US}}</ref> Canadian Pacific originally rostered 61 SD90MACs, which spent much of the 2010-decade parked in long-term storage, with the exception of three, which were retired and scrapped in 2012.{{Citation needed|date=June 2024}} The remaining 58, along with two surplus Union Pacific SD90MACs, will be used as cores for the 60 SD70ACUs. These units began delivering in 2019.<ref name=":3" />

From this order came numerous heritage units. Namely: CP 7010-7014 in CP's tuscan red, gray, and gold paint scheme with script lettering, CP 7015-7019 in the same paint but with block lettering,<ref>{{Cite web |last=Cotey |first=Angela |date=2019-09-16 |title=Canadian Pacific releases two SD70ACU heritage locomotives NEWSWIRE |url=https://www.trains.com/trn/news-reviews/news-wire/16-canadian-pacific-releases-two-sd70acu-heritage-units/ |url-status=live |archive-url=https://web.archive.org/web/20220926051821/https://www.trains.com/trn/news-reviews/news-wire/16-canadian-pacific-releases-two-sd70acu-heritage-units/ |archive-date=2022-09-26 |access-date=2024-06-24 |website=[[Trains (magazine)|Trains]] |language=en-US}}</ref> CP 7020 in NATO green representing temperate climates, CP 7021 in the sand color used for arid climates, CP 7022 wears the grey, red and black colour pattern of modern warships, CP 7023 wears a two-tone gray paint scheme inspired by fighter jets, CP 6644 wears the camouflage colours applied to Royal Canadian Air Force “Spitfire” fighter planes flown at the Allied invasion of Normandy, France, on June 6, 1944 and is numbered in remembrance of that date.<ref>{{Cite web |last=Cotey |first=Angela |date=2019-11-12 |title=CP details paint schemes on commemorative locomotives NEWSWIRE |url=https://www.trains.com/trn/news-reviews/news-wire/12-cp-details-paint-schemes-on-commemorative-locomotives/ |url-status=live |archive-url=https://web.archive.org/web/20220906180016/https://www.trains.com/trn/news-reviews/news-wire/12-cp-details-paint-schemes-on-commemorative-locomotives/ |archive-date=2022-09-06 |access-date=2024-06-24 |website=[[Trains (magazine)|Trains]]}}</ref><ref>{{Cite web |last=Lester |first=David |date=2022-11-12 |title=Canadian Pacific places five locomotives with military paint schemes in service |url=https://www.rtands.com/freight/class-1/canadian-pacific-puts-five-locomotives-with-military-paint-schemes-in-service/ |url-status=live |archive-url=https://web.archive.org/web/20200804065104/https://www.rtands.com/freight/class-1/canadian-pacific-puts-five-locomotives-with-military-paint-schemes-in-service/ |archive-date=2020-08-04 |access-date=2024-06-24 |website=[[Railway Track & Structures|RT&S]]}}</ref> CP 7015 led the CP business train for a short time due to a mechanical failure with the regular units and then returned to freight service.<ref>{{Cite web |last=Smedley |first=Steve |date=2019-10-14 |title=New CP heritage unit leads business train NEWSWIRE |url=https://www.trains.com/trn/news-reviews/news-wire/14-new-cp-heritage-unit-leads-business-train/ |url-status=live |archive-url=https://web.archive.org/web/20230315234756/https://www.trains.com/trn/news-reviews/news-wire/14-new-cp-heritage-unit-leads-business-train/ |archive-date=2023-03-15 |access-date=2024-06-24 |website=[[Trains (magazine)|Trains]] |language=en-US}}</ref><ref>{{Cite web |last=Glischinski |first=Steve |date=2019-10-21 |title=CP heritage units make first revenue run NEWSWIRE |url=https://www.trains.com/trn/news-reviews/news-wire/21-cp-heritage-units-make-first-revenue-run/ |url-status=live |archive-url=https://web.archive.org/web/20230529094720/https://www.trains.com/trn/news-reviews/news-wire/21-cp-heritage-units-make-first-revenue-run/ |archive-date=2023-05-29 |access-date=2024-06-24 |website=[[Trains (magazine)|Trains]] |language=en-US}}</ref> The remaining units received the standard CP red paint scheme.

In 2021, Canadian Pacific purchased 40 more SD90MACs from the Union Pacific for further rebuilding into SD70ACU engines.{{Citation needed|date=June 2024}}

===SD70ACC===
The '''SD70ACC''' is the latest rebuild in Norfolk Southern's DC to AC program. It has the new EMD safety cab, similar to the SD70ACe cab, but with the “teardrop windshield”, much like the SD70ACe-T4. The SD70ACC has been rebuilt with AC traction motors, an AAR-style control stand, an electrical cabinet with Mitsubishi electronics, a new main alternator, and additional weight to increase the maximum weight to {{convert|432000|lb|t|1}}. The SD70ACC is rated at 4,500 horsepower (3,355.649 kilowatts), has a fuel capacity of {{convert|4900|USgal|L}}, and has dynamic braking, cab signals, and LSL (Locomotive Speed Limiter).{{Citation needed|date=January 2024}} The first locomotive was released to service in November 2018.<ref>{{Cite web |last=Guss |first=Chris |date=2018-11-24 |title=Norfolk Southern SD70ACC leads train into Chicago for first time |url=https://www.trains.com/trn/news-reviews/news-wire/12-norfolk-southern-sd70acc-leads-train-into-chicago-for-first-time/ |url-status=live |archive-url=https://web.archive.org/web/20220928011146/https://www.trains.com/trn/news-reviews/news-wire/12-norfolk-southern-sd70acc-leads-train-into-chicago-for-first-time/ |archive-date=28 September 2022 |access-date=2024-01-14 |website=[[Trains magazine|Trains]] |language=en-US}}</ref>

Norfolk Southern is rebuilding its fleet of SD70s into SD70ACC specifications.<ref>{{cite web| url=https://facebook.com/nsdash9/posts/10155476809143843| archive-url=https://web.archive.org/web/20231102142438/https://www.facebook.com/nsdash9/posts/10155476809143843| archive-date=November 2, 2023| url-access=limited| via=Facebook| publisher=NSDash9.com| date=January 9, 2018| title=SD70ACC's Coming Soon| access-date=January 18, 2022| url-status=bot: unknown}}{{better source needed|date=January 2022}}</ref><ref>{{cite web| url=https://facebook.com/nsdash9/posts/10155326954688843| archive-url=https://web.archive.org/web/20231102142534/https://www.facebook.com/nsdash9/posts/10155326954688843| archive-date=November 2, 2023| url-access=limited| via=Facebook| publisher=NSDash9.com| date=November 12, 2017| title=More SD70ACC rebuilds for 2018| access-date=January 18, 2022| url-status=bot: unknown}}{{better source needed|date=January 2022}}</ref> The first two units, 1800 and 1801, were unveiled in a special yellow and grey paint scheme to promote the DC to AC program, similar to the paint schemes used on the first [[GE AC44C6M]]. As of 2024,  52 Units have been rebuilt and have since been released to service.<ref>{{Cite web| url=http://www.nsdash9.com/rosters/1800.html| title=NS Diesel Locomotive Roster - EMD SD70ACC Nos. 1800–1851| website=NSDash9.com| first=Chris R.| last=Toth}}</ref>

===SD70MACe===
The SD70MACe is a rebuilt SD70MAC locomotive with new Mitsubishi electronics and traction motors to replace the Siemens traction motors. It was first rebuilt for the BNSF Railway,<ref>{{Cite web |date=2015-09-09 |title=BNSF receives first rebuilt locomotives from GE, EMD |url=https://www.trains.com/trn/news-reviews/news-wire/09-bnsf-overhaul/ |url-status=live |archive-url=https://web.archive.org/web/20220923071414/https://www.trains.com/trn/news-reviews/news-wire/09-bnsf-overhaul/ |archive-date=23 September 2022 |access-date=2024-01-13 |website=[[Trains magazine|Trains]] |language=en-US}}</ref> and later rebuilt for CSX (classified as '''SD70AC''') and KCS.

===SD70MACH===
[[File:METX 515, May St, Chicago, IL (54257630520) (cropped).jpg|thumb|[[Metra]] SD70MACH #515]]
The SD70MACH is an SD70MAC rebuilt by Progress Rail for [[Metra]]. A purchase of 15 SD70MACHs for passenger service has been approved, with options of up to 27 more.<ref>{{Cite web| url=http://trn.trains.com/news/news-wire/2019/02/20-metra-board-approves-locomotive-purchase| url-status=dead| archive-url=https://web.archive.org/web/20190228223638/http://trn.trains.com/news/news-wire/2019/02/20-metra-board-approves-locomotive-purchase| archive-date=February 28, 2019| title=UPDATE: Metra board approves locomotive purchase; SD70MACH models to come out of EMD| website=Trains Magazine| first=Richard| last=Wronski| date=February 20, 2019}}</ref> The first unit was delivered in 2022 and entered service in late 2023.<ref>{{Cite web |date=2023-12-02 |title=Metra SD70MACHs begin revenue service |url=https://www.trains.com/trn/news-reviews/news-wire/metra-sd70machs-begin-revenue-service/ |access-date=2024-01-15 |website=Trains |language=en-US}}</ref> They are the first six-axle passenger locomotives since the [[EMD F40C]] and the Alaska Railroad's HEP-equipped SD70MACs. 

The rebuild includes the addition of [[head end power]] (HEP) along with meeting Tier 3 emissions. The axles are configured in a B1-1B configuration as one inverter is repurposed for supplying HEP.<ref>{{cite web |last1=Lassen |first1=David |title=Metra project underway to increase speeds on Electric District |url=https://www.trains.com/trn/news-reviews/news-wire/metra-project-underway-to-increase-speeds-on-electric-district/ |website=Trains |publisher=Firecrown Media |date=29 February 2024}}</ref> The SD70MACH is designed to be significantly quieter than older freight models, generating 85 dBA Of noise during idle and operating which is 40% quieter than the SD70AC. This quieter operation is achieved through various design elements, including the Engines, the longer wheels and treatment to the engines. The SD70MACH family is also designed to have a 50% smaller noise footprint compared to the F40PHs.

=== SD70ICC ===
The SD70ICC is an SD70M-2 rebuilt with AC traction by Progress Rail. Units are rebuilt from Norfolk Southern & PRLX SD70M-2's. Norfolk Southern is currently the only operator of these units.<ref>{{cite web |url=http://www.nsdash9.com/rosters/1250.html|title=Norfolk Southern Diesel Roster}}</ref>

==Operators==
{| class="wikitable"
|+
!Railroad
!Qty.
!Road numbers
!Notes
|-
! colspan="4" |SD70
|-
|[[Illinois Central Railroad|Illinois Central]]
|40
|1000–1039<ref name="cnmotivepower">{{cite web |title=Canadian National Motive Power Summary |url=https://thedieselshop.us/CN.HTML |access-date=25 January 2012 |work=The Diesel Shop}}</ref>
|Units 1006, 1013, 1014 & 1023 were wrecked and retired.
|-
|[[Norfolk Southern Railway|Norfolk Southern]]
|80
|2501–2580<ref name="nsmotivepower">{{cite web |date=4 January 2011 |title=Norfolk Southern Motive Power |url=http://www.thedieselshop.us/NS.HTML |url-status=dead |archive-url=https://web.archive.org/web/20120511132916/http://www.thedieselshop.us/NS.HTML |archive-date=May 11, 2012 |access-date=24 January 2012 |work=The Diesel Shop}}</ref>
|Units 2557–2580 are ex-[[Conrail]] units, but built to NS specifications. 52 units have been rebuilt as SD70ACCs, and all remaining units were sold to PRLX in 2020.
|-
|[[Southern Peru Copper Corporation]]
|2
|60–61
|Assembled in April 1999, these were the last standard or "spartan" cab units produced by EMD, and were built as an add-on to [[Illinois Central]] SD70's 1020–1039, even matching their specifications.
|-
! colspan="4" |SD70M
|-
| rowspan="2" |[[Norfolk Southern]]
|68
|2581–2648
|All sold to PRLX in 2020.<ref name="nsmotivepower" /> Units 2596, 2598, 2607, 2608, 2613, 2616, 2620, 2622, 2637, 2645, 2648 sold to RJ Corman in Fall 2022.<ref>{{cite web |url=https://www.altoonaworks.info/rosters/rjc.pdf |title=RJ Corman Railroad Company}}</ref> 5 units sold to [[Ontario Northland Railway|Ontario Northland]] in 2022. Units 2601, 2605, 2611, 2612, 2614, 2621, 2623, 2628, 2635, and 2646 sold to [[Indiana Rail Road]] in 2023.
|-
|3
|2797–2799
|Units are ex-New York, Susquehanna & Western 4050, 4052, 4054. Acquired in September 2014, but later sold to PRLX in 2020.
|-
|[[Union Pacific]]
|1,452
|1616, 1979, 2001–2002, 3778–3984, 3986–4013, '''4015''', 4016–4140, 4142–4331, 4333–4391, 4393–4689, 4692–5231
|Units 2001-2002 are ex 4690–4691, 3778 is ex 4141, renumbered for SD70ACe 4141, and No. 3985 is occupied by steam locomotive [[Union Pacific 3985|3985]].<ref name="upmotivepower">{{cite web |date=21 January 2012 |title=Union Pacific Motive Power |url=https://thedieselshop.us/UP.HTML |access-date=25 January 2012 |work=The Diesel Shop}}</ref> Unit 4014, along with 4884, was given the honor of escorting UP's 4-8-8-4 [[Union Pacific Big Boy|Big Boy]] move to Cheyenne for restoration, and eventual return to the active roster. To avoid confusion, the "Big Boy" was renumbered [[Union Pacific 4014|UPP 4014]].<ref>Union Pacific RR{{full citation needed|date=January 2022}}</ref> The SD70M has since been renumbered as UP 4479, becoming the second UP SD70M to carry that number as the first 4479 was retired after being wrecked. This renumbering allows the Big Boy to be numbered as UP 4014.<ref>{{Cite web |date=June 27, 2018 |title=Union Pacific to renumber SD70M No. 4014 before Big Boy runs |url=http://trn.trains.com/news/news-wire/2018/06/27-union-pacific-will-renumber-sd70-4014 |website=Trains Magazine |access-date=February 20, 2019 |archive-date=October 18, 2018 |archive-url=https://web.archive.org/web/20181018191935/http://trn.trains.com/news/news-wire/2018/06/27-union-pacific-will-renumber-sd70-4014 |url-status=dead }}</ref> 
• 9 units sold to [[Lake State Railway]]
• Units 4120-4128 sold to [[Paducah & Louisville Railway|Paducah & Louisville]] and [[Evansville Western Railway|Evansville Western]]
• Units 4375 and 4672 sold to Herzog
• 10 units sold to [[Tren Interoceánico|Tren Interoceanico]]
• 4 units sold to [[Florida Gulf and Atlantic Railroad|Florida, Gulf and Atlantic Railroad]]
• 3 units sold to [[Grenada Railroad]]
• 6 units sold to [[Yadkin Valley Railroad]]

•4 units sold to [[Lancaster and Chester Railroad|Lancaster & Chester Railroad]]

Units 2001 & 2002 were, and still are, painted in tribute of the 2002 Winter Olympics which took place in Salt Lake City, UT.

Unit 4332 renumbered to 1979 in 2021 and wears the We Are One livery

Unit 4015 (first) was a diesel helper for [[Union Pacific 4014|UP 4014]], and was renumbered to 1616 to honor the 16th president, [[Abraham Lincoln]], and was released on April 30, 2025.

Unit 4392 was renumbered to 4015 (2nd) to replace the first 4015.
|-
| rowspan="2" |[[PRLX|PRLX (Progress Rail Leasing)]]
|25
|4675–4699
|All units are former [[CSX]] and are also former EMDX demonstrators 7000–7024. 4675 and 4677 were sold to [[Central Oregon and Pacific Railroad|CORP]] in 2022.
|-
|71
|2581–2648, 2797–2799
|They are ex-Norfolk Southern 2581–2648 and 2797–2799 units. Purchased between March and April 2020. 10 units were sold to RJ Corman as of Fall 2022. 10 more units were sold to [[Indiana Rail Road]] in 2023.
|-
|[[Ferrominera Orinoco]]
|6
|1052–1057
|N/A
|-
|[[Carajás Railroad]] (EFC) - [[Companhia Vale do Rio Doce]]
|55<ref name="RF 2015 lista de locomotivas">{{cite web |date=1 December 2015 |title=3.289 locomotivas em operação |url=http://www.revistaferroviaria.com.br/index.asp?InCdSecao=86&p1=%2Findex%2Easp&p2=InCdSecao%3D40%26InCdSubSecao%3D153 |url-access=subscription |url-status=dead |archive-url=https://web.archive.org/web/20170107003902/http://www.revistaferroviaria.com.br/index.asp?InCdSecao=86&p1=%2Findex%2Easp&p2=InCdSecao%3D40%26InCdSubSecao%3D153 |archive-date=January 7, 2017 |access-date=1 January 2016 |work=Revista Ferroviária}}</ref>
|701-755
|These are wide gauge {{track gauge|1600mm}} units.
|-
|[[Lake State Railway]]
|9
|6430–6438
|All are ex-UP units. Acquired in May 2022.
|-
|[[R.J. Corman Railroad Group|RJ Corman]]
|10
|1973, 2023, 2596, 2598, 2613, 2616, 2620, 2622, 2637, 2645, 2648
|All units are former NS. Acquired in Fall 2022.<ref>{{cite web |url=https://www.altoonaworks.info/rosters/rjc.pdf |title=RJ Corman Railroad Company}}</ref> Units 1973, 2023, 2596 & 2620 are painted in 50th anniversary scheme.
|-
|[[Indiana Rail Road]]
|10
|7001–7010
|All units are former NS. Unit 7001 is in [[Operation Lifesaver]] paint. Unit 7010 is in a veterans scheme.
|-
|[[Paducah & Louisville Railway]] / [[Evansville Western Railway|Evansville Western]]
|9
|4120-4128
|All units are former UP
|-
|[[Southern Pacific Transportation Company|Southern Pacific]]
|25
|9800-9824
|All to [[Union Pacific Railroad|Union Pacific]]. Renumbered 3974-3984, 3986-3999
|-
|[[Ontario Northland Railway]] 
|5
|2120-2124
|Ex-NS 2631, 2642, 2633, 2639, 2644
|-
|[[Tren Interoceánico]] 
|10
|4378, 4671, 4674, ????, ????, ????, ????, ????, ????, ????
|Ex-UP, 7 units unidentified
|-
! colspan="4" |SD70I
|-
|[[Canadian National]]
|26
|5600–5625<ref name="cnmotivepower" />
|N/A
|-
! colspan="4" |SD70MAC
|-
|[[Alaska Railroad]]
|28
|4001–4016, 4317–4328<ref>{{cite web |title=Alaska Railroad's Motive Power |url=https://www.thedieselshop.us/ALASKA.HTML |access-date=24 January 2012 |work=The Diesel Shop}}</ref>
|The units numbered 4317–4328 have flared radiators for Tier 1 compliance and are equipped with [[head-end power]] (HEP) generators for passenger service.
|-
|[[BNSF]]
|786
|8800–8989, 9400–9499, 9504–9999<ref name="bnsfmotivepower">{{cite web |title=Burlington Northern Santa Fe Motive Power Fleet |url=https://thedieselshop.us/BNSF.HTML |access-date=25 January 2012 |work=The Diesel Shop}}</ref>
|Units 9551-9564 sold to PRLX. Unit 8945 sold to KCS. 30 units sold to WFRX. 4 units sold to [[Red River Valley and Western Railroad|Red River Valley and Western]]. 10 units sold to [[Colorado Pacific Rio Grande Railroad]]. 7 units sold to [[Quebec Gatineau Railway]]. 3 units sold to [[St. Lawrence and Atlantic Railroad|St. Lawrence & Atlantic Railroad.]] Unit 9540 sold to Yadkin Valley Railroad. Remaining units in storage. Only used as Yard unit, Backup Multiple Power unit and Distributed Power Unit. Units 8876 and 9724 were wrecked and scrapped.
|-
|[[CSX]]
|220
|4500–4589, 4701–4830<ref name="csxmotivepower">{{cite web |last=Craig |first=R. |date=23 January 2012 |title=CSX Motive Power Summary |url=https://thedieselshop.us/CSX.HTML |access-date=25 January 2012 |work=The Diesel Shop}}</ref>
|In Storage, units to be rebuilt to SD70MACes. Units 4542, 4716, and 4759 were wrecked and retired, while unit 4500 was retired for parts and eventually scrapped. These are called SD70AC. Unit 4568 is painted in honour of Operation Livesaver's 50th anniversary. Unit 4720 is painted in a "One CSX" initiative scheme that honours the railroad's employees. Unit 4507 was rebuilt into a first responders training prop and renumbered 911343.<ref>{{cite web |title=CSX debuts first responder training prop locomotive |date=January 27, 2025 |url=https://www.trains.com/trn/news-reviews/news-wire/csx-debuts-first-responder-training-prop-locomotive/}}</ref>
|-
|[[Kansas City Southern Railway|Kansas City Southern]]
|75
|3900–3902, 3904–3905, 3907, 3910–3916, 3918, 3920–3921, 3924–3926, 3928–3930, 3932, 3934–3935, 3937–3938, 3941–3942, 3944, 3946–3948, 3951, 3953, 3955, 3957, 3961–3964, 3966–3968, 3970, 3972–3974<ref name="kcsmotivepower">{{cite web |date=26 December 2011 |title=Kansas City Southern and KCS de Mexico (A Work-in-Progress) |url=https://www.thedieselshop.us/KCS.HTML |access-date=24 January 2012 |work=The Diesel Shop}}</ref>
|All are ex-[[Kansas City Southern de México|Transportación Ferroviaria Mexicana]] (TFM) units. Some units rebuilt to SD70MACe. Unit 3974 is ex-BNSF 8945. Some units sold to Metra and rebuilt as SD70MACH. 3909 and 3946 sold to Alaska Railroad. 6 units sold to Ontario Northland
|-
|[[PRLX|PRLX (Progress Rail Leasing)]]
|14
|9551-9564
|All units are ex-[[Burlington Northern]] and later [[BNSF]].
|-
|Wells Fargo Leasing (WFRX)
|30
|8858, 8859, 8861–8868, 8870, 8871, 8877, 8895, 8898–8899, 8901, 8909, 8910, 8912, 8914, 8915, 8959-8966<ref>{{cite web |title=WFRX -- Wells Fargo Rail |url=https://www.thedieselshop.us/WFRX.HTML |access-date=15 August 2023 |work=The Diesel Shop}}</ref>
|All are ex-BNSF.
|-
|[[Yadkin Valley Railroad]] 
|1
|9540
|Ex-BNSF, BN
|-
! colspan="4" |SD70ACe
|-
|[[ArcelorMittal]], operated by [[Cartier Railway]]
|5
|9001-9005
|Delivered in May 2013.
|-
|[[Arkansas & Missouri Railroad]]
|6
|70-73, 7001–7002
|Units 70-72 are ex-EMDX 1201–1203, and were fitted with mock cab-mounted bells. 73 is ex-KCS 4028. 7001 and 7002 are ex-Tacoma Rail SD70ACe-P4's, and will presumably be renumbered as A&M units 74 and 75.
|-
| rowspan="2" |[[BNSF]]
|640
|8400–8499, 8520–8599, 8749–8799, 8990–9158, 9160–9399<ref name="bnsfmotivepower" />
|9159 wrecked, rebuilt, and renumbered 8749. 9000 was wrecked and retired in 2021. 9370-9399 are Thundercab units.
|-
|20
|8500–8519
|They are the SD70ACe-P4 model.
|-
|[[Canadian National]]
|4
|8100-8103
|They are the SD70ACe-P6 model, also set up for Distributed Power operation. Previously in EMDX paint with CN logos, all now repainted. Units are ex-EMDX 1206, 1208–1210.
|-
|[[Canadian Pacific Kansas City]]
|228
|3997–4224<ref name="kcsmotivepower" />
|Units 3997–3999 are ex-EMD demonstrators. 4014 wrecked and was retired. 4028 sold to A&M as 73. In November 2018, 4006 was painted into a veterans scheme.<ref>{{Cite web |last=Becker |first=Shannon |title=Kansas City Southern 4006 Salutes Veterans Past and Present |url=https://www.koamnewsnow.com/news/kansas-city-southern-4006-salutes-veterans-past-and-present/article_47ae3990-bb7c-11ed-9cd5-bbca75f7eaec.html |access-date=2023-03-12 |website=KOAM News Now |date=March 5, 2023 |language=en}}</ref> In May 2020 4009 was painted into a "Salute to Heroes" scheme.<ref>{{Cite web |title=Kansas City Southern - Introducing our new SD70ACe locomotive KCS 4009 painted as a salute to the heroes throughout our network and beyond – especially railroad employees. Resilient and Essential. Hats off to you. #KCS #KansasCitySouthern #Resilient #Essential #Eficientes #Esenciales #Heroes {{!}} Facebook |url=https://www.facebook.com/KansasCitySouthern/photos/a.166076143428113/2887950291240671/ |access-date=2023-03-12 |website=www.facebook.com |language=en}}</ref> units 4014-4015, 4021-4022-4023, 4028, 4031-4032-4033, 4038, 4042, 4046, 4048, 4050 are Retired. KCSM 4084 wrecked and retired. 4200–4224 built in 2015, they are not Tier 4 compliant and are thus restricted to Mexico.
|-
|[[CSX]]
|20
|4831–4850
|4839 retired due to an alternator failure. All retired in 2017 and sold to Progress Rail (PRLX).
|-
|[[Electro-Motive Diesel]] Leasing
|3
|1207, 2012, 4223
|1207 is the SD70ACe-P4 model.
|-
| rowspan="2" |[[Ferromex]]
|97
|4000-4096<ref>{{cite web |last=Komanesky |first=John |date=17 January 2012 |title=Ferrocarril Mexicano (Ferromex) Motive Power |url=https://thedieselshop.us/FXE.HTML |access-date=25 January 2012 |work=The Diesel Shop}}</ref>
|N/A
|-
|34
|4100–4133
|Built in 2015, these units are not Tier 4 compliant and are thus restricted to Mexico. 4119-4133 are assigned to [[Ferrosur]], and are specially equipped with experimental sheet-metal awnings or "elephant ears" over the radiator air intakes to combat excess heat and enhance engine cooling in the many tunnels through which they must operate.
|-
|[[Luminant]] (formerly Texas Utitilies Generating Co., TUGX)
|2
|5308–5309
|Units are ex-EMDX 1204 & 1205 respectively.
|-
|[[Montana Rail Link]]
|29
|4300–4319, 4400–4408
|4316–4319 are ex-[[BHP]].<ref name="MP128" />
|-
|[[Norfolk Southern]]
|175
|1000–1174<ref name="nsmotivepower" />
|1065–1074 and 1080 painted in special historic "heritage" schemes honoring important NS predecessor roads.
|-
|[[Northshore Mining]]
|5
|671–675
|Ex. Progress Rail CSX units 4832–4833, 4838–4839, 4848.
|-
|[[Quebec North Shore & Labrador]]
|28
|501–528
|Units 501-507 were built in December 2009; 508-513 were built in August 2011; and 514-523 were built in December 2012.<ref>{{cite magazine |date=October–November 2013 |magazine=Diesel Era Magazine |volume=24 |issue=5}}</ref> 524-528 are ex [[BHP]].<ref name="MP128" />
|-
|[[Tacoma Rail]]
|2
|7001–7002
|They are the SD70ACe-P4 model and are ex-EMDX 1211 & 1212. Sold to Arkansas and Missouri Railroad in late 2023.<ref>{{Cite web |date=September 3, 2014 |title=Trains News Wire EXCLUSIVE: Tacoma Rail acquires two SD70ACe-P4s |url=http://trn.trains.com/news/news-wire/2014/09/tacoma-rail-acquires-two-sd70ace-p4s |url-status=dead |archive-url=https://web.archive.org/web/20141211031144/http://trn.trains.com/news/news-wire/2014/09/tacoma-rail-acquires-two-sd70ace-p4s |archive-date=December 11, 2014 |website=Trains Magazine}}</ref>
|-
| rowspan="2" |[[Union Pacific]]
|518
|1111, 1982, 1983, 1988, 1989, 1995, 1996, [[Union Pacific 4141|4141]], 8309–8361, 8363-8378, 8380–8382, 8384–8395, 8397–8422, 8424–8823<ref name="upmotivepower" />
|1111, [[Union Pacific 4141|4141]], 1982, 1983, 1988, 1989, 1995, and 1996 are special painted units. 4141 donated to the Bush Presidential Library in 2019. Units 8315, 8485, 8491, 8542, 8551, 8692, and 8743 were wrecked and retired.
|-
|281
|1943, 8824–9025, 9027–9104
|These units have 8,000 lbs. of extra ballast for more tractive-effort and are classified by Union Pacific as '''SD70AH'''. Unit 9026 was renumbered 1943 "Spirit of the Union Pacific" in 2017. 1943, 8997–9025, and 9027–9104 are Tier 4 credit units.
|-
| rowspan="2" |[[PRLX|PRLX (Progress Rail Leasing)]]
|14
|4831-4850
|All units are former [[CSX]]. 5 of 19 units sold to Northshore Mining.
|-
| rowspan="2" |10
| rowspan="2" |4324–4333
| rowspan="2" |Originally intended for [[BNSF]] and purchased by BHP Billiton when on the production line.<ref name="PClark" />
|-
|[[BHP]]
|-
|[[Fortescue Metals Group]]
|10
|722–732
|These are Tier 3 units.
|-
|Demonstrator manufactured in Brazil
|3
|7044–7046
|These are wide gauge {{track gauge|1600mm}}) units.
|-
! colspan="4" |SD70M-2
|-
|[[Canadian National]]
|190
|8000–8024, 8800–8964
|All units are equipped for Distributed Power operation. 8952 became CNs GTW heritage Unit<ref name="cnmotivepower" />
|-
|CaterParrott Railnet
|2
|9000-9001
|Former NS
|-
|[[CIT Group]]
|3
|140–142<ref>{{cite web |last1=Belote |first1=Joseph |last2=Craig |first2=R. |date=23 January 2012 |title=CIT Rail Resources |url=https://thedieselshop.us/CITX.HTML |access-date=25 January 2012 |work=The Diesel Shop}}</ref>
|All are ex-EMD demonstrators.
|-
|[[Florida East Coast Railway]]
|8
|100–107<ref>{{cite web |date=16 November 2008 |title=Florida East Coast Motive Power |url=https://thedieselshop.us/FEC.HTML |access-date=25 January 2012 |work=The Diesel Shop}}</ref>
|All eight units were returned to lessor in early 2015. Former FEC 100 & 102 now [[Providence & Worcester Railroad]] 4301 & 4302, respectively. Former FEC 101 & 103 now [[Vermont Railway]] 431 & 432, respectively. Remaining units sold to [[Florida Gulf & Atlantic Railroad]].
|-
|[[Florida Gulf & Atlantic Railroad]]
|4
|104-107
|All are former [[Florida East Coast]] units.
|-
|[[New Brunswick Southern Railway]]
|18
|6401–6418
|All are former [[Norfolk Southern Railway|Norfolk Southern]] units, rebuilt with nose headlights.
|-
|[[New York, Susquehanna and Western Railway]]
|4
|4060, 4062, 4064, 4066
|All are former [[Norfolk Southern Railway|Norfolk Southern]] units.
|-
|[[Norfolk Southern]]
|130
|2649-2778
|4 units sold to NYSW, 18 units sold to NBSR and rebuilt with nose headlights, 2 units sold to CaterParrott Railnet. Remaining units stored as of 2020. 46 units have been reactivated with units 2674 and 2686 being rebuilt to SD70ICCs 1250–1251 in 2023.<ref name="nsmotivepower" />
|-
|[[Providence & Worcester Railroad]]
|2
|4301-4302
|All are Former [[Florida East Coast]] units.
|-
|[[Vermont Railway]]
|2
|431–432
|All are Former [[Florida East Coast]] units.
|-
! colspan="4" |SD70ACe-T4
|-
|[[CSX]]
|10
|8900–8909
|Delivered July 2019. Leased and later returned to PRLX in 2023.
|-
|[[Electro-Motive Diesel]] Leasing
|1
|1501
|N/A
|-
|[[Union Pacific]]
|100
|3000–3099
|N/A
|-
|[[PRLX|PRLX (Progress Rail Leasing)]]
|65
|7201–7252, 8900–8909
|10 units part of a cancelled NS SD70ACe-T4 order intended for delivery late 2019. Units 8900-8909 formerly leased to CSX.
|-
! colspan="4" |SD70ACe/LCi
|-
|[[BHP]]
|184
|4300–4323, 4334–4497<ref name="PClark" />
|First 13 repatriated to the United States and sold to [[Chemin de fer Arnaud]] (4), [[Montana Rail Link]] (4) and [[Quebec North Shore & Labrador]] (5), and rebuilt to U.S. specs.<ref name="MP128" />
|-
|[[Fortescue Metals Group]]
|21
|701–721<ref name="FortescueMay13" />
|N/A
|-
! colspan="4" |SD70ACS
|-
| rowspan="2" |[[Etihad Railway]]
|7
| rowspan="5" |TBA
|Delivered 2013.
|-
|38
|Ordered Feb. 2020.
|-
|[[Compagnie des Bauxites de Guinée]]
|10
|Ordered 10 units.
|-
|[[Mauritania Railway]]
|6
|Ordered 6 units.
|-
|[[Saudi Railway Company]]
|25
|N/A
|-
! colspan="4" |SD70ACe-BB
|-
|[[Valor da Logística Integrada]]
|62
|8332–8393
|They operate on the lines of [[Ferrovia Centro-Atlântica]]. An additional 16 locomotives should be delivered in the first half of 2017.<ref name="RF Outubro/Novembro 2016">{{cite web |date=October 2016 |title=Papel de destaque Investimentos do setor de celulose repercutem nas ferrovias - Carteira vazia |url=http://www.revistaferroviaria.com.br/index.asp?InCdSecao=85&p1=%2Findex%2Easp&p2=InCdSecao%3D83%26InAno%3D2016 |url-access=subscription |url-status=dead |archive-url=https://web.archive.org/web/20170202132552/http://www.revistaferroviaria.com.br/index.asp?InCdSecao=85&p1=%2Findex%2Easp&p2=InCdSecao%3D83%26InAno%3D2016 |archive-date=February 2, 2017 |access-date=22 January 2017 |website=Revista Ferroviária}}</ref>
|-
|Demonstrator manufactured in Brazil
|2
|8795–8796
|N/A
|-
! colspan="4" |SD70ACe/45
|-
|[[América Latina Logística]], now [[Rumo Logística]]
|7<ref name="RF 2015 lista de locomotivas" />
|618–624
|N/A
|-
|[[Eldorado Brasil]]
|21<ref name="RF 2015 lista de locomotivas" />
|9553–9573
|Operated by [[América Latina Logística]].
|-
|[[Valor da Logística Integrada]]
|52
|N/A
|Operate on the lines of [[Ferrovia Centro-Atlântica]] and [[Ferrovia Norte-Sul]].
|-
! colspan="4" |SD70IAC
|-
|[[Norfolk Southern Railway|Norfolk Southern]]
|50
|1175–1234<ref name="nsroster">{{cite web |date=1 April 2019 |url=http://www.nsdash9.com/roster.html |access-date=1 April 2019 |work=NSDash9.com|title=Norfolk Southern Diesel Locomotive Roster }}</ref>
|These are SD70ACe/SD70IAC units. SD70IAC units are SD70ACe T4C units with IAC="Individual Axle Control" and are called SD70IAC by NS. All have now been delivered. 1224–1234 delivered in 2022.
|-
! colspan="4" |SD70ACe/LW
|-
|No data currently
| -
| -
| -
|-
! colspan="4" |SD70ACU
|-
|[[Canadian Pacific]]
|60
|6644, 7000–7023, 7025-7059
|Rebuilt from CP's SD9043MACs that were in long-term storage, plus additional locomotives bought from Union Pacific. 7010–7019 are outfitted in retro liveries and 7020–7023 and 6644 are armed forces painted units; 6644 is painted as a tribute to D-Day. 7005 and 7011 wrecked in April 2023.
|-
|[[Norfolk Southern]]
|110
|7229–7313, 7315-7339
|Rebuilt from ex-UP and ex-CIT SD90MACs.<ref name="nsroster" /> 66 units sold to PRLX, 30 of the PRLX units sold to Ferromex in 2024. 7314 was renumbered to 7339 in 2018.
|-
|[[Ferromex]]
|3
|4164-4155-4158
|Ex PRLX/NS 7324.7251.7259
|-
! colspan="4" |SD70ACC
|-
|[[Norfolk Southern]]
|52
|1800–1851
|Rebuilt from ex-NS SD70s. 1832 wrecked in June 2020 when it hit a tractor trailer then derailed.
|-
! colspan="4" |SD70MACe
|-
|[[CSX]]
|220
|4500–4589, 4701–4830<ref name="csxmotivepower" />
|Rebuilt from SD70MAC units
|-
|[[Kansas City Southern Railway|Kansas City Southern]]
|75
|3900–3902, 3904–3905, 3910–3916, 3918, 3920–3921, 3924–3926, 3928–3930, 3932, 3934–3935, 3937–3938, 3941–3942, 3944, 3946–3948, 3951, 3953, 3955, 3957, 3961–3964, 3966–3968, 3970, 3972–3974<ref name="kcsmotivepower" />
|All are ex-[[Kansas City Southern de México|Transportación Ferroviaria Mexicana]] (TFM) units.
|-
! colspan="4" |SD70MACH
|-
|[[Metra]]
|15
|500 Series
|There are options for 27 more. Former KCS SD70MAC freight units rebuilt by Progress Rail Services. First unit arrived October 2022, and the first locomotives began running in late 2023.
|-
! colspan="4" |SD70ICC
|-
|[[Norfolk Southern]]
|2
|1250-1251
|These locomotives were rebuilt from PRLX/NS SD70M-2 locomotives, numbered 2674 and 2686. They were rebuilt in late 2023 by Progress Rail.
|-
|}

==Preservation==
On November 8, 2019, Union Pacific donated SD70ACe [[Union Pacific 4141|No. 4141]] to the [[George H.W. Bush Presidential Library and Museum]].<ref>{{Cite web| url=http://trn.trains.com/news/news-wire/2019/11/08-union-pacific-donates-sd70ace-no-4141-to-george-hw-bush-presidential-library-big-boy-4014-joins-celebration| title=Union Pacific donates SD70ACe No. 4141 to George H.W. Bush Presidential Library; Big Boy 4014 joins celebration| website=Trains Magazine| first=Jim| last=Wrinn| date=November 8, 2019| access-date=2019-11-08| archive-date=September 28, 2020| archive-url=https://web.archive.org/web/20200928085323/https://trn.trains.com/news/news-wire/2019/11/08-union-pacific-donates-sd70ace-no-4141-to-george-hw-bush-presidential-library-big-boy-4014-joins-celebration| url-status=dead}}</ref> The locomotive, painted in honor of [[George H. W. Bush]], was unveiled in October 2005 and was in active service until 2009, when it was placed into storage due to the [[2008 financial crisis]]. It was brought back in 2018 to participate in [[Death and state funeral of George H. W. Bush|Bush's funeral train]] on December 6, 2018.<ref>{{cite web| title=George H.W. Bush Funeral Train| website=[[Union Pacific]]| url=https://www.up.com/media/media_kit/bush41/index.htm| access-date=December 2, 2018}}</ref> The locomotive subsequently remained in active service following the funeral until its last run between November 8 and November 9, as part of the [[Union Pacific 4014]] Southwest Tour, in which the plans for the display were unveiled. The locomotive arrived back at College Station on March 12, 2021,<ref>{{Cite press release| title=Union Pacific 4141 Makes Last Stop At Bush Museum| date=March 21, 2021| url=https://today.tamu.edu/2021/03/21/union-pacific-4141-makes-last-stop-at-bush-museum/| last=Reilly| first=Mike| access-date=March 22, 2021}}</ref> and the Marine One/4141 Locomotive Pavillion, where the 4141 is displayed, opened on June 13, 2024.<ref>{{cite web | url=https://www.railwayage.com/freight/class-i/class-i-briefs-up-bnsf/ | title=Class I Briefs: UP, BNSF | date=May 6, 2024 }}</ref>

==Gallery==
<gallery class="center" centered"="" style="line-height:120%" widths="180">
File:BNSF 9819 EMD SD70MAC.jpg|[[BNSF]] SD70MAC No. 9819
File:Train Q410.jpg|[[CSX]] SD70ACe No. 4845
File:Norfolk Southern Railway SD70M-2 2700 leads train 21M through Easton PA July 2006.jpg|[[Norfolk Southern Railway|NS]] SD70M-2 No. 2700
File:SD70ACe45 6518 VLI.jpg|VLI SD70ACe45 No. 6518
File:BNSF 9211 Lincoln, NE 10-19-2014.jpg|[[BNSF Railway|BNSF]] SD70ACe No. 9211
File:2 UP 4141 Leads 21 Car Officer Special returning from Bush Funeral Stilwell, KS 12-8-18.jpg|[[Union Pacific 4141|UP SD70ACe No. 4141]]
File:Trainspotting CN -8903 EMD SD70M-2 leading CN -2561 GE C44-9W (Dash 9-44CW) (8098478098).jpg|[[Canadian National|CN]] SD70M-2 No. 8903
File:EMD SD70ACe Truck.jpg|A [[Bogie|radial steering truck]] on the [[Union Pacific Heritage Fleet#Heritage units|UP SD70ACe No. 1988]]
File:BHPB Iron Ore 4352.JPG|[[BHP]] SD70ACe/LCi No. 4352
File:Up-sd70-model-wp.jpg|A comparison of the various versions of the SD70's as operated by [[Union Pacific]]
</gallery>

==Footnotes==
{{Reflist|30em}}

==References==
* {{cite book|last=Clark|first=Peter|title=An Australian Locomotive Guide|year=2012|publisher=Rosenberg Publishing|isbn=978-1-921719-55-4}}
* {{cite journal|last=Montgomery|first=Richard|title=SD70ACe – brute power|journal=The Westland|date=October 2009|issue=263|pages=24–31|publisher=[[Rail Heritage WA]]|location=Bassendean, WA|issn=1835-6370 }}
* {{cite book|last=Oberg|first=Leon|title=Locomotives of Australia 1850s-2010s|year=2010|publisher=Rosenberg Publishing|location=Kenthurst|isbn=978-1-921719-01-1}}
* {{Solomon-EMD Locomotives}}
* {{Solomon-Modern Diesel}}
* Kansas City Southern 4006 Salutes Veterans Past and Present: https://www.koamnewsnow.com/news/kansas-city-southern-4006-salutes-veterans{{Dead link|date=December 2024 |bot=InternetArchiveBot |fix-attempted=yes }}

==Further reading==
* {{McDonnell-Locomotives-2nd}}
* [https://archive.org/details/canadian-national-railways-electro-motive-sd70m-2-locomotive-operators-manual- Canadian National Railways: Electro-Motive SD70M-2 Locomotive Operator's Manual (First Edition, November 2005)]

{{Commons category|EMD SD70 locomotives|EMD SD70 series}}

{{EMD SDs}}
{{Green Locos}}

{{DEFAULTSORT:Emd Sd70 Series}}
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