FieldProspects

Nassau County, New York

Nassau County, New York has 50 power projects in the FieldProspects database: 48 operating plants totaling 1.5 GW and 2 planned projects totaling 3 MW. No data center record lists the county. Natural Gas leads with 1.2 GW across 32 projects.

Data as of Grid region: New York ISO (NYISO)Refreshed monthly
50
power projects, planned and operating
3MW
planned generation, 2 projects
1.5GW
operating generation, 48 projects
0
planned projects past their listed in-service date
Map

Nassau County and its neighbors

Counties shaded by data center MW on record, planned to operating. 2 of its 2 neighboring counties have pages of their own. The rest are in the member database.

Nassau no data centers Suffolk 0 MW Queens no data centers
no data center MWunder 100 MW100 to 1,000 MW1,000 to 5,000 MW5,000 to 15,000 MW15,000 MW or more no page yet

Data center records planned, under construction and operating, data as of October 8, 2026.Hover a county for its numbers

Headline finding
0%

of the county's operating generation is in the queue as new capacity: 3 MW planned across 2 projects against 1.5 GW operating.

Operating generation1.5 GW
Planned generation3 MW

Technology mix

50 projects, 1.5 GW planned and operating

Natural Gas1.2 GW32 projects, 83%
Oil164.5 MW14 projects, 11%
Municipal Solid Waste78.6 MW1 project, 5%
3 other technologies4.8 MW3 projects, 0%
Which companies own these 50 projects?Project names, developers and contacts are for members.See what members get

Power generation in the county

48 plants operate inside Nassau County, 1.5 GW. The queue adds 3 MW across 2 projects.

Figure 1

Operating and planned generation by technology

MW in Nassau County

OperatingPlanned
Natural GasOperating 1.2 GW 32 projects
OilOperating 164.5 MW 14 projects
Municipal Solid WasteOperating 78.6 MW 1 project
Landfill GasPlanned 3 MW 1 project
SolarOperating 1.8 MW 1 project
TransmissionPlanned 0 MW 1 project
View as table
TechnologyStatusProjectsMW
Natural GasOperating321,228.7
OilOperating14164.5
Municipal Solid WasteOperating178.6
Landfill GasPlanned13
SolarOperating11.8
TransmissionPlanned10
Operating: 1.5 GW. Planned: 3 MW. If every planned project is built, county generation would reach 1.5 GW.
Source. FieldProspects database: ISO/RTO interconnection queues, EIA-860M and public data center filings, data as of October 8, 2026.
Figure 2

Planned generation by listed in-service year

MW. Years before 2026 are past due. 1 planned project lists no date and is left out.

Past dueDue 2026 or later
0123 Snapshot year 3 2026
View as table
YearPlanned projectsMW
202613
No planned project is past its listed year

Nassau County against its neighbors

None of the 2 neighboring counties with a page lists a data center record. Queens County has the most operating generation among them, 5.2 GW.

CountyData center recordsData center MWOperating generation MWPlanned generation MWData center MW per MW operating
Queens County 0
0
5,197
645 0x
Suffolk County 1
0
4,390
3,990 0x
Nassau County this page 0
0
1,474
3 0x

Data center MW counts records planned, under construction and operating. Generation is inside the county only. Neighbors without a page have fewer than three projects on record.

3 counties shown

What changed since June 4, 2026

1 project in Nassau County moved between the two snapshots. Counts and MW are below; the projects themselves are for members.

Open the change feed
0
added to a queue, 0 MW
0
came online, started construction or signed an interconnection agreement, 0 MW
0
cancelled, dropped or went inactive, 0 MW
1
slipped its in-service date, 3 MW

Every change in Nassau County

Project, what changed, technology, MW and the dates that moved, for all 1 change.

Members only
County: Nassau County, NYSince June 4, 2026 1 change
ProjectChangeTechnologyMWPrevious dateNew date
1 change behind this preview

Rows are hidden on public pages. Members see the project behind each change, its developer and the dates that moved.

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Every record in Nassau County

Project name, developer, status, MW, in-service year and the developer’s contacts, for all 50 records. Filter, sort and export to Excel.

Members only
County: Nassau County, NYStatus: all except cancelledSort: MW, largest first 50 records
Project or campusDeveloperStatusMWYearContacts
50 records and 1.5 GW behind this preview

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