Data last collected:
PowerPlantFactsEvidence report · prepared 19 October 2026https://powerplantfacts.com/entity/10823
EIA plant 10823
Winthrop · Suffolk · MA
Deer Island Treatment Plant
Operated by Massachusetts Wtr Rauth-Deer I
Published location
Where is Deer Island Treatment Plant?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
42.353333, -70.962778
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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.
14,283.1
22,859.42
33,712.68
43,315.47
52,928.99
63,560.24
73,425.27
82,292.83
92,323.91
102,537.44
112,630.91
123,131.24
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 | 4,283.1 |
| 2 | 2,859.42 |
| 3 | 3,712.68 |
| 4 | 3,315.47 |
| 5 | 2,928.99 |
| 6 | 3,560.24 |
| 7 | 3,425.27 |
| 8 | 2,292.83 |
| 9 | 2,323.91 |
| 10 | 2,537.44 |
| 11 | 2,630.91 |
| 12 | 3,131.24 |
2024 monthly net generation
| Month | Net generation |
|---|---|
| 1 | 4,283 MWh |
| 2 | 2,859 MWh |
| 3 | 3,713 MWh |
| 4 | 3,315 MWh |
| 5 | 2,929 MWh |
| 6 | 3,560 MWh |
| 7 | 3,425 MWh |
| 8 | 2,293 MWh |
| 9 | 2,324 MWh |
| 10 | 2,537 MWh |
| 11 | 2,631 MWh |
| 12 | 3,131 MWh |
Operating generators
| ID | Technology | Fuel | MW | Status |
|---|---|---|---|---|
| G101 | Petroleum Liquids | DFO | 26 | SB |
| G201 | Petroleum Liquids | DFO | 26 | SB |
| S101 | Other Waste Biomass | OBG | 17.5 | OP |
| H101 | Conventional Hydroelectric | WAT | 1 | OP |
| H201 | Conventional Hydroelectric | WAT | 1 | OP |
| WT101 | Onshore Wind Turbine | WND | 0.6 | OP |
| WT102 | Onshore Wind Turbine | WND | 0.6 | OP |
| PV101 | Solar Photovoltaic | SUN | 0.1 | OP |
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Similar-capacity plants in the same state
Identity, technology and limitations
EIA plant ID
10823
Sector
Commercial CHP
Water source
Municipality
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 Deer Island Treatment Plant 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 Deer Island Treatment Plant
Variation in the published months
Across 12 numeric monthly generation entries, 1 has the highest recorded value (4,283 MWh) and 8 the lowest (2,293 MWh). Their difference is 1,990 MWh. Missing months have not been treated as zero.
Reading the MW column
In the 8 numeric rows displayed in this table, MW ranges from 0.1 (PV101) to 26 (G101, G201). The difference is 25.9 in the column's stated units. This summary covers the displayed rows and retains the table's period and scope.
Generator capacity in different operating conditions
| Generator ID | Technology | Nameplate MW | Summer MW | Winter MW | Minimum load MW |
|---|---|---|---|---|---|
| G101 | Petroleum Liquids | 26.0 | 22.0 | 27.0 | 8.0 |
| G201 | Petroleum Liquids | 26.0 | 22.0 | 27.0 | 8.0 |
| H101 | Conventional Hydroelectric | 1.0 | 1.0 | 1.0 | 0.2 |
| H201 | Conventional Hydroelectric | 1.0 | 1.0 | 1.0 | 0.2 |
| PV101 | Solar Photovoltaic | 0.1 | 0.1 | 0.1 | Not supplied |
| S101 | Other Waste Biomass | 17.5 | 9.0 | 17.5 | 1.0 |
| WT101 | Onshore Wind Turbine | 0.6 | 0.6 | 0.6 | 0.1 |
| WT102 | Onshore Wind Turbine | 0.6 | 0.6 | 0.6 | 0.1 |
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.