- Wind & solar
- Operating
- 10 · 100 · 1,000 MW
Map
- Wind & solar
- Operating
Shaffer: location. Basemap: Protomaps, © OpenStreetMap contributors, ODbL.
Shaffer
Power plant · Solar
Key facts
Power plant · Solarran 15% of 2025 Operating- Capacity
- Capacity: sourceEIA-860M · Open licenseMW
- Commissioned
- 2014
- Net generation, 2025
- 6,434 MWh
- Grid
- 13 kV to Massachusetts Electric Co (ISNE)
- Location
- Middlesex County, Massachusetts
- Operated by
- CD US Solar MT3, LLCSourceEIA-860M Preliminary Monthly Electric Generator Inventory
Operations
- Net generation, 2025
- 6,434
MWh - Fuel burned, 2025
- 21,953
MMBtu - Capacity factor, 2025
- 14.7
% - Heat rate, 2025
- Not stated
| Year | Net generation (MWh) | Fuel burned (MMBtu) | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|---|
| 2025 | 6,434 | 21,953 | 14.7% | — |
| 2024 | 6,708 | 22,887 | 15.3% | — |
| 2023 | 5,580 | 19,039 | 12.7% | — |
| 2022 | 6,037 | 20,598 | 13.8% | — |
| 2021 | 6,343 | 56,100 | 14.5% | — |
| 2020 | 7,282 | 63,843 | 16.6% | — |
| 2019 | 6,754 | 60,143 | 15.4% | — |
| 2018 | 6,941 | 63,191 | 15.8% | — |
| 2017 | 6,546 | 60,307 | 14.9% | — |
| 2016 | 6,908 | 63,776 | 15.7% | — |
| 2015 | 6,913 | 64,423 | 15.8% | — |
| 2014 (4 of 12 months) | 1,848 | 17,575 | — | — |
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 Preliminary Monthly Electric Generator Inventory
- Global Energy Monitor — Global Integrated Power Tracker (unit-level power plants, eight technologies, all statuses)Global 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.
- EIA Open Data bulk file — Electricity (ELEC.zip; monthly plant net generation and fuel consumption since 2001)Source: U.S. Energy Information Administration, Electricity bulk data (Form EIA-923 monthly plant series)