Salem Harbor Power Development LP
Natural gas power plant in Essex County, Massachusetts. 798.2 MW of nameplate capacity across 4 generators, operated by Salem Harbor Power Development LP.
Also known as Salem Harbor Station · EIA plant 60903
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Key facts
- Capacity
- 798.2 MWNameplate
- Generators
- 4 operatingEIA-860M, August 2026
- Operating since
- May 2018First generator online
- Operator
- Salem Harbor Power Development LPEIA operator ID 59928
- Grid
- ISO-NEBalancing authority ISNE
- Price nodes
- 2 ISONE nodesResource nodes with prices
- Location
- Essex County, MA42.5255, −70.8782
- EIA plant ID
- 60903EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Salem Harbor Power Development LP produces
Free · EIA-923Net generation, 2025
1.79 TWh
1,793,994 MWh, final
Capacity factor, 2025
25.7%
2024: 16.4%
January to July 2026
458 GWh
Provisional
Range, 2019 to 2025
0.5–1.8
TWh a year. Low 2019, high 2025
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | Not reported | Not reported | 0 of 12 |
| 2002 | Not reported | Not reported | 0 of 12 |
| 2003 | Not reported | Not reported | 0 of 12 |
| 2004 | Not reported | Not reported | 0 of 12 |
| 2005 | Not reported | Not reported | 0 of 12 |
| 2006 | Not reported | Not reported | 0 of 12 |
| 2007 | Not reported | Not reported | 0 of 12 |
| 2008 | Not reported | Not reported | 0 of 12 |
| 2009 | Not reported | Not reported | 0 of 12 |
| 2010 | Not reported | Not reported | 0 of 12 |
| 2011 | Not reported | Not reported | 0 of 12 |
| 2012 | Not reported | Not reported | 0 of 12 |
| 2013 | Not reported | Not reported | 0 of 12 |
| 2014 | Not reported | Not reported | 0 of 12 |
| 2015 | Not reported | Not reported | 0 of 12 |
| 2016 | Not reported | Not reported | 0 of 12 |
| 2017 | Not reported | Not reported | 0 of 12 |
| 2018 | 873,759 | 21.3% | 7 of 12 |
| 2019 | 534,128 | 7.6% | 12 of 12 |
| 2020 | 833,492 | 11.9% | 12 of 12 |
| 2021 | 732,013 | 10.5% | 12 of 12 |
| 2022 | 544,674 | 7.8% | 12 of 12 |
| 2023 | 697,565 | 10.0% | 12 of 12 |
| 2024 | 1,149,956 | 16.4% | 12 of 12 |
| 2025 | 1,793,994 | 25.7% | 12 of 12 |
| 2026 (provisional, partial year) | 458,242 | Not reported | 7 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free account · ISONEEmissions
Free · EPA CAMPDCO₂, 2025
745,199
US short tons. 2024: 495,875
SO₂, 2025
4
US short tons
NOx, 2025
43
US short tons
CO₂ per MWh, calculated
0.42 t
About 831 lb per MWh
2 of 2 EPA units reported CO₂ in 2025 (1, 2), matched to EIA plant 60903 through the EPA–EIA crosswalk. The per-MWh rate is EPA CO₂ divided by EIA-923 net generation. The two reporting boundaries can differ.
Water use
Free · EIA-923 cooling, USGSWithdrawal, 2024
Not reported
million gallons as reported; not used, see note
Consumption, 2024
Not reported
million gallons
Source
Not reported
Dry cooling
Watershed stress
Very low/none · 0.147
USGS SUI, HUC12 North River-Massachusetts Bay
0 of 24 cooling months report withdrawal. Dry cooling with no reported withdrawal; not tested. Consumption is below 5% of a large reported withdrawal, so the withdrawal is not used. Blank volumes are unreported, not zero.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 1 | Natural Gas Fired Combined Cycle | 158.4 | May 2018 |
| 2 | Natural Gas Fired Combined Cycle | 158.4 | May 2018 |
| 3 | Natural Gas Fired Combined Cycle | 240.7 | May 2018 |
| 4 | Natural Gas Fired Combined Cycle | 240.7 | May 2018 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists Salem Harbor Power Development LP as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Generation potential vs reported
Monthly potential at seasonal net capability, next to EIA-923 output. Shows how much of the plant's capability was used.
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Questions about Salem Harbor Power Development LP
How much power does Salem Harbor Power Development LP produce?
Salem Harbor Power Development LP reported 1,793,994 MWh (1.79 TWh) of net generation in 2025, a 25.7% capacity factor on 798.2 MW of nameplate capacity. From January to July 2026 it reported 458 GWh, which is provisional.
Where is Salem Harbor Power Development LP?
Salem Harbor Power Development LP is in Essex County, Massachusetts, at 42.5255, −70.8782. It is in the ISO New England Inc. balancing area (ISNE).
Who operates Salem Harbor Power Development LP?
EIA-860M for August 2026 lists Salem Harbor Power Development LP as the operator (EIA operator ID 59928). The operator is not always the owner.
When did Salem Harbor Power Development LP start operating?
Its first generator began operating in May 2018, according to EIA-860M.
Does InfraMap have power prices for Salem Harbor Power Development LP?
Yes. InfraMap has ISONE day-ahead and real-time prices at 2 price nodes linked to Salem Harbor Power Development LP, with the hub price and node-to-hub basis. Prices are free with an InfraMap account; pricing node names are part of InfraMap Pro.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- EPA CAMPD annual emissions through the EPA–EIA crosswalk, 1995 to 2025
- ISONE day-ahead and real-time prices; node and hub assignments as of 2026-10-05
- EIA-923 cooling water 2024 and the USGS surface water supply and use index, Water years 2010-2020 (Oct 2009 to Sep 2020), mean of monthly values
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page