Data last collected:
PowerPlantFactsEvidence report · prepared 19 October 2026https://powerplantfacts.com/entity/56234
EIA plant 56234
Yaphank · Suffolk · NY
Caithness Long Island Energy Center
Operated by Caithness Long Island, LLC
Published location
Where is Caithness Long Island Energy Center?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
40.814200, -72.940300
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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 NY 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.
1225,675
2213,541
3216,896
435,191
5-451
60
785,157
8214,608
9205,619
10204,591
11215,621
12236,673
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 | 225,675 |
| 2 | 213,541 |
| 3 | 216,896 |
| 4 | 35,191 |
| 5 | -451 |
| 6 | 0 |
| 7 | 85,157 |
| 8 | 214,608 |
| 9 | 205,619 |
| 10 | 204,591 |
| 11 | 215,621 |
| 12 | 236,673 |
2024 monthly net generation
| Month | Net generation |
|---|---|
| 1 | 225,675 MWh |
| 2 | 213,541 MWh |
| 3 | 216,896 MWh |
| 4 | 35,191 MWh |
| 5 | -451 MWh |
| 6 | 0 MWh |
| 7 | 85,157 MWh |
| 8 | 214,608 MWh |
| 9 | 205,619 MWh |
| 10 | 204,591 MWh |
| 11 | 215,621 MWh |
| 12 | 236,673 MWh |
Operating generators
| ID | Technology | Fuel | MW | Status |
|---|---|---|---|---|
| CT01 | Natural Gas Fired Combined Cycle | NG | 196.2 | OP |
| ST01 | Natural Gas Fired Combined Cycle | NG | 152.7 | OP |
Continue exploring
Similar-capacity plants in the same state
Identity, technology and limitations
EIA plant ID
56234
Sector
IPP Non-CHP
Water source
Suffolk County Water Authority
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 Caithness Long Island Energy Center 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 Caithness Long Island Energy Center
Variation in the published months
Across 11 numeric monthly generation entries, 12 has the highest recorded value (236,673 MWh) and 6 the lowest (0 MWh). Their difference is 236,673 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 |
|---|---|---|---|---|---|
| CT01 | Natural Gas Fired Combined Cycle | 196.2 | 187.7 | 216.0 | 150.0 |
| ST01 | Natural Gas Fired Combined Cycle | 152.7 | 129.6 | 149.2 | 80.0 |
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.