Data last collected:
PowerPlantFactsEvidence report · prepared 19 October 2026https://powerplantfacts.com/entity/66320
EIA plant 66320
Millbury · Worcester · MA
3Colton
Operated by Madison Energy Holdings LLC
Published location
Where is 3Colton?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
42.206180, -71.739990
Open the interactive map ↗Map data © OpenStreetMap contributors
Capacity is not generation. Nameplate MW describes equipment; annual MWh describes recorded output. Proposed and retired units are not added to operating capacity.
Equipment mix
Operating capacity by technology
Grouped from this plant’s represented generator records. Use the MA plant index for regional peers.
See the evidence
Electricity output across the year
Monthly net generation shows the seasonal shape of this plant's represented output. A negative value is retained when the source reports net consumption.
1135
2402
3461
4503
5563
6606
7549
8497
9429
10402
11309
12198
MWh net generation · 2024 final edition · EIA 923 represented operating rows. 12 of 12 supplied rows shown; 0 missing values omitted. Months with no reported numeric value are omitted, not treated as zero.
Read the chart as a table
| Record | MWh net generation |
|---|---|
| 1 | 135 |
| 2 | 402 |
| 3 | 461 |
| 4 | 503 |
| 5 | 563 |
| 6 | 606 |
| 7 | 549 |
| 8 | 497 |
| 9 | 429 |
| 10 | 402 |
| 11 | 309 |
| 12 | 198 |
2024 monthly net generation
| Month | Net generation |
|---|---|
| 1 | 135 MWh |
| 2 | 402 MWh |
| 3 | 461 MWh |
| 4 | 503 MWh |
| 5 | 563 MWh |
| 6 | 606 MWh |
| 7 | 549 MWh |
| 8 | 497 MWh |
| 9 | 429 MWh |
| 10 | 402 MWh |
| 11 | 309 MWh |
| 12 | 198 MWh |
Operating generators
| ID | Technology | Fuel | MW | Status |
|---|---|---|---|---|
| 3COLT | Solar Photovoltaic | SUN | 3.4 | OP |
Continue exploring
Similar-capacity plants in the same state
Identity, technology and limitations
EIA plant ID
66320
Sector
IPP Non-CHP
Water source
Unavailable
Data edition
2024-final
Use this record
Questions this evidence can answer
01What exactly is this record?
Use the name, place, date and identifiers above to confirm that you have the right 3Colton power plant: capacity and generation | PowerPlantFacts record.
02What does the evidence establish?
Read the reported values with their units, coverage dates and source notes. Keep observed facts separate from estimates or interpretation.
03What should I verify next?
Follow the primary-source links and check the limitations before using this evidence for a decision, comparison or citation.
A closer look at 3Colton
Variation in the published months
Across 12 numeric monthly generation entries, 6 has the highest recorded value (606 MWh) and 1 the lowest (135 MWh). Their difference is 471 MWh. Missing months have not been treated as zero.
Generator capacity in different operating conditions
| Generator ID | Technology | Nameplate MW | Summer MW | Winter MW | Minimum load MW |
|---|---|---|---|---|---|
| 3COLT | Solar Photovoltaic | 3.4 | 3.4 | 3.4 | Not supplied |
EIA-860 2024 final source. Ratings describe capacity, not actual generation or availability. Missing ratings are not zero.
Source: US Energy Information Administration Form EIA-860 2024 plant and operable-generator workbooks; archive 2024. US EIA-authored information is generally public domain; cite EIA, preserve third-party exceptions, changes and no-endorsement context. Source-specific derived data.