- Clean firm
- Operating
- 10 · 100 · 1,000 MW
Map
- Clean firm
- Operating
Stevenson: location. Basemap: Protomaps, © OpenStreetMap contributors, ODbL.
Stevenson
Power plant · Hydro
Key facts
Power plant · Hydroran 26% of 2025 Operating- Capacity
- Capacity: sourceEIA-860M · Open licenseMW
- Commissioned
- 1919
- Net generation, 2025
- 70,774 MWh
- Grid
- 115 kV to Connecticut Light & Power Co (ISNE)
- Location
- Fairfield County, Connecticut
- Operated by
- FirstLight Power Resources Services LLC
Operations
- Net generation, 2025
- 70,774
MWh - Fuel burned, 2025
- 241,482
MMBtu - Capacity factor, 2025
- 26.5
% - Heat rate, 2025
- Not stated
| Year | Net generation (MWh) | Fuel burned (MMBtu) | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|---|
| 2025 | 70,774 | 241,482 | 26.5% | — |
| 2024 | 95,790 | 326,834 | 35.8% | — |
| 2023 | 111,230 | 379,518 | 41.6% | — |
| 2022 | 61,552 | 210,015 | 23.0% | — |
| 2021 | 116,552 | 1,030,785 | 43.6% | — |
| 2020 | 79,376 | 695,890 | 29.6% | — |
| 2019 | 105,681 | 941,090 | 39.6% | — |
| 2018 | 138,076 | 1,257,044 | 51.7% | — |
| 2017 | 77,234 | 711,557 | 28.9% | — |
| 2016 | 50,136 | 462,857 | 18.7% | — |
| 2015 | 70,169 | 653,905 | 26.3% | — |
| 2014 | 93,171 | 886,055 | 34.9% | — |
| 2013 | 93,918 | 896,072 | 35.1% | — |
| 2012 | 71,942 | 684,598 | 26.9% | — |
| 2011 | 136,033 | 1,321,697 | 50.9% | — |
| 2010 | 88,710 | 865,455 | 33.2% | — |
| 2009 | 114,672 | 1,119,198 | 42.9% | — |
| 2008 | 127,336 | 1,254,770 | 47.5% | — |
| 2007 | 80,327 | 793,950 | 30.1% | — |
| 2006 | 122,740 | 1,217,458 | 45.9% | — |
| 2005 | 106,089 | 1,060,784 | 39.7% | — |
| 2004 | 102,356 | 1,025,812 | 38.2% | — |
| 2003 | 127,562 | 1,306,362 | 47.7% | — |
| 2002 | 74,737 | 760,300 | 28.0% | — |
| 2001 | 62,181 | 642,516 | 23.3% | — |
How these are worked out
Net generation and fuel burned are the monthly figures EIA publishes in its bulk electricity file, from the plant's Form 923 reports; a year is the sum of its months. Capacity factor is a full year's net generation over today's nameplate capacity times the hours in that year (8,784 in a leap year), so a plant uprated or partly retired since reads against its current size; heat rate is fuel burned over net generation, for plants that burn fuel. A year with fewer than twelve months stated has no capacity factor, and a value outside the plausible range is left blank rather than shown. By month, the charts apply the same rules to each month's own hours and fuel.
Sources
3 sourcesSources
- EIA-860M
- GEMGlobal Integrated Power Tracker, Global Energy Monitor, September 2026 release (https://globalenergymonitor.org/projects/global-integrated-power-tracker), CC BY 4.0. Modified by Inframation: TransitionZero-sourced rows removed; statuses and technologies mapped to Inframation's vocabulary; figures aggregated. Copyright © Global Energy Monitor. Global Integrated Power Tracker, September 2026 release. Distributed under a Creative Commons Attribution 4.0 International License.
- EIASource: U.S. Energy Information Administration, Electricity bulk data (Form EIA-923 monthly plant series)