States › New York › Nassau County
Electric utilities serving Nassau County, New York
Utilities that list the county in their Form EIA-861 service territory for 2024, with each one's average price, bill and outage minutes.
3 utilities list Nassau County, New York, in the service territory they reported to EIA for 2024, the largest by residential customers statewide being Long Island Power Authority, Village of Freeport and Village of Rockville Centre.
Their average residential prices ran from 14.12¢ to 24.57¢ per kilowatthour, with a median of 19.35¢, against a New York average of 24.43¢ and a US average of 16.48¢. Each price is the utility's figure for all of its New York customers, not for this county alone.
The median SAIDI they reported was 45.1 minutes per customer including major event days; the median among all New York utilities reporting was 63.5.
The Census Bureau estimates the county's population at 1,398,939. EIA does not publish customers by county, so which utility serves a given address has to be confirmed with the utility or the state utility commission.
Average price is revenue divided by sales for the sector and year; it is not a tariff rate. Reliability figures are as reported by utilities to EIA on Form 861 and may use different calculation methods. Figures are for each utility's whole New York operation; EIA publishes nothing at county level.
Utilities and their 2024 figures
| Utility | Ownership | Residential customers | ¢ per kWh | Monthly bill | SAIDI, all events | SAIDI, no major events |
|---|---|---|---|---|---|---|
| Long Island Power Authority | State | 1,029,955 | 24.57¢ | $181.50 | 63.5 | 59.3 |
| Village of Freeport | Municipal | 13,353 | 14.12¢ | $108.78 | 26.6 | 6.9 |
| Village of Rockville Centre short form | Municipal | 11,243 | — | — | — | — |
Ordered by residential customers in New York. Short-form filers are small utilities that report only totals to EIA, so no residential price is available; their all-sector revenue per kWh was Village of Rockville Centre 11.31¢. A utility with no customers shown reported its retail sales elsewhere or delivers power that other companies bill for.
Against the state and the country
| Measure, 2024 | Utilities listing Nassau County | New York | United States |
|---|---|---|---|
| Average residential price per kWh | 19.35¢ median | 24.43¢ | 16.48¢ |
| Average monthly residential bill | $145.14 median | $139.53 | $142.26 |
| SAIDI, all events (minutes) | 45.1 median | 63.5 median | 184.5 median |
| SAIDI, without major event days | 33.1 median | 70.2 median | 99.8 median |
| Utilities counted | 3 | 70 | 1,413 |
Outage minutes reported
SAIDI for 2024 across each utility's whole system, including major event days (paler bars: only the figure without major event days was reported). Not a measure of outages in Nassau County itself.
Population: 1,398,939 (U.S. Census Bureau, Vintage 2025 estimate). Statewide, residential sales came to 2,543 kWh per resident in 2024.
Other New York counties
- Kings County 1
- Lewis County 3
- Livingston County 3
- Madison County 6
- Monroe County 5
- Montgomery County 1
- New York County 1
- Niagara County 2
- Oneida County 5
- Onondaga County 4
- Ontario County 3
- Orange County 3
All 62 counties and every New York utility
Questions and answers
Who provides electricity in Nassau County?
Long Island Power Authority, Village of Freeport and Village of Rockville Centre list the county in their Form EIA-861 service territory for 2024. Territories overlap, and a utility may cover only a corner of the county.
What is the electricity price in Nassau County?
EIA has no county-level prices. The utilities serving the county reported average residential prices of 14.12¢ to 24.57¢ per kilowatthour across their New York customers in 2024; the state average was 24.43¢.
How reliable is power in Nassau County?
Reliability is reported per utility, not per county. The utilities listed reported a median of 45.1 minutes of interruption per customer in 2024 including major event days and 33.1 minutes excluding them.
Provenance
Source: U.S. Energy Information Administration, Form EIA-861 for 2024, final release: service territory file (counties by utility), sales to ultimate customers, reliability and short form files. State and US averages: Form EIA-861M workbook. Population: U.S. Census Bureau. Public domain. To confirm the utility at an address, ask the utility or the state utility commission.