Oswego County, New York: Power, Data Centers and the Local Economy
Home to Oswego, Fulton and Hastings
Oswego County hosts some of the generating capacity New York runs on. Its power plants have 5,959 MW of capacity, 47% of it nuclear, the largest fleet in New York. Oswego County is home to Oswego, Fulton, Hastings and Schroeppel. 14 MW of new generation is planned here across 3 units, led by Mallory South PV I LLC (solar). 14 MW of it is already under construction or built. Next door, Onondaga County has 7 data centers. Construction employs 1,451, down 13.2% since 2019.
Cities and towns in Oswego County
Oswego County is home to Oswego, Fulton, Hastings and Schroeppel.
And 4 smaller places.
Unincorporated communities (governed by the county): Altmar, Brewerton, Constantia, Minetto, SUNY Oswego, Sand Ridge.
Residents are 2025 Census estimates for the part of each city, town or township inside this county. Census publishes no annual estimate for unincorporated communities.
What changed in Oswego County
1st = the most. Ranks cover counties with a value on record.
| Measure | Then | Now | Change | Rank in New York |
|---|---|---|---|---|
| Population (2020 → 2025) | 117,437 | 118,569 | ▲ 1.0% | 24th of 62 by size |
| Total jobs (2019 → 2025) | 33,458 | 32,477 | ▼ 2.9% | 40th of 62 by growth |
| Average annual pay (2019 → 2025) | $47,725 | $64,290 | ▲ 34.7% | — |
| Construction jobs (2019 → 2025) | 1,672 | 1,451 | ▼ 13.2% | 49th of 55 by growth |
| Unemployment rate (2019 → August 2026) | 5.1% | 4.4% | ▼ 0.7pts | — |
| Generating capacity added since 2019 | — | 47 MW | — | |
| Generating capacity retired since 2019 | — | 0 MW | — | |
| Planned generation (Aug 2026) | — | 14 MW | 0% of today's fleet | 34th of 43 by size |
47 MW of that came online in 2019 or later, mostly solar. Unemployment was 4.4% in August 2026, against 5.1% in 2019. Employers here counted 32,477 jobs in 2025, down 2.9% from 2019. Niagara Mohawk Power Corp. is the largest utility serving Oswego County. Its residential customers paid an average 17.22¢/kWh in 2024. 118,569 people live here, up 1.0% since 2020.
Who powers Oswego County
Net change in operating capacity since 2019: +47 MW. Colors follow the fuel legend above.
Utilities with service territory in Oswego County
| Utility | Ownership | Service | Residential customers (systemwide) | Residential price, 2024 | Commercial share of sales |
|---|---|---|---|---|---|
| Niagara Mohawk Power Corp. | Investor Owned | Bundled | 1,532,294 | 17.22¢ | 24% |
Customer counts, prices and sales shares cover each utility's whole system in the state, not only this county. Commercial sales include data centers.
Operating power plants 31
| Technology | Capacity | Share |
|---|---|---|
| Nuclear | 2,784 MW | 47% |
| Petroleum | 1,804 MW | 30% |
| Natural gas | 1,215 MW | 20% |
| Hydro | 97 MW | 2% |
| Solar | 47 MW | 1% |
| Battery storage | 8 MW | 0% |
| Other technologies | 4 MW | 0% |
| Largest plants | Owner | Technology | MW | Since |
|---|---|---|---|---|
| Nine Mile Point Nuclear Station | Constellation Nuclear | Nuclear | 1,901 MW | 1969 |
| Oswego Harbor Power | Oswego Harbor Power | Petroleum | 1,804 MW | 1975 |
| Sithe Independence Station | Sithe/Independence LLC | Natural gas | 1,158 MW | 1994 |
| James A Fitzpatrick | Constellation Nuclear | Nuclear | 883 MW | 1976 |
| Indeck Oswego Energy Center | Indeck-Oswego Ltd Partnership | Natural gas | 57 MW | 1990 |
| Bennetts Bridge | Erie Boulevard Hydropower LP | Hydro | 36 MW | 1932 |
Planned generation 3
| Plant | Technology | MW | Status | Year | Owner |
|---|---|---|---|---|---|
| Mallory South PV I | Solar Photovoltaic | 5 MW | Under construction (>50%) | 2026 | Mallory South PV I LLC |
| Mallory South PV II | Solar Photovoltaic | 5 MW | Under construction (>50%) | 2026 | Mallory South PV II LLC |
| Mexico PV, LLC | Solar Photovoltaic | 4 MW | Under construction (>50%) | 2026 | Dimension Energy LLC |
The Oswego County labor market
| Industry (2025) | Jobs | Average pay | Concentration vs U.S. |
|---|---|---|---|
| All industries | 32,477 | $64,290 | 1.00 |
| Construction | 1,451 | $77,579 | 0.84 |
| Power and communication line construction | 100 | $86,354 | 1.91 |
Concentration is the BLS location quotient: 1.0 means the industry holds the same share of local jobs as it does nationally. Industry rows count private employers; cells BLS suppresses are left out.
Data centers and local rules in Oswego County
No data center, local measure or delayed project is on record in Oswego County. New York has 35 local measures on record statewide.
Oswego County and its neighbors
Of the 6 counties that border Oswego County, Onondaga County carries the most build-out activity: data centers, planned generation and operating plants combined.
| County | Population | Jobs since 2019 | Operating MW | Planned MW | Data centers | Local measures |
|---|---|---|---|---|---|---|
| Oswego County | 118,569 | ▼ 2.9% | 5,959 MW | 14 MW | — | — |
| Cayuga County | 74,365 | ▼ 3.9% | 51 MW | 137 MW | — | — |
| Jefferson County | 111,540 | ▲ 0.1% | 256 MW | 119 MW | 1 | — |
| Lewis County | 26,479 | ▲ 9.0% | 785 MW | — | — | — |
| Madison County | 67,120 | ▼ 2.4% | 118 MW | 182 MW | — | — |
| Oneida County | 226,392 | ▼ 4.4% | 242 MW | 25 MW | 1 | — |
| Onondaga County | 466,584 | ▲ 0.7% | 398 MW | 25 MW | 7 | — |
More of New York
Oswego County, answered from the record
Who provides electricity in Oswego County, New York?
1 utility has service territory in Oswego County in the EIA-861 2024 report: Niagara Mohawk Power Corp.. The largest, Niagara Mohawk Power Corp., charged residential customers 17.22¢/kWh on average in 2024.
What county is Oswego, NY in?
Oswego is in Oswego County, New York. About 17,024 people live there (2025 Census estimate).
What county is Fulton, NY in?
Fulton is in Oswego County, New York. About 11,188 people live there (2025 Census estimate).
What power plants are in Oswego County?
31 operating plants with 5,959 MW of capacity. The largest is Nine Mile Point Nuclear Station (1,901 MW, nuclear).
How much new power is planned in Oswego County?
14 MW across 3 units in the August 2026 EIA-860M inventory, 14 MW of it under construction or built. The largest owner is Mallory South PV I LLC.
Are there data centers in Oswego County?
The SAVRN Data Center Map has no data center in Oswego County. The nearest activity on record is next door in Onondaga County.
Is Oswego County adding jobs?
Employers counted 32,477 jobs in 2025 against 33,458 in 2019 (-2.9%, BLS QCEW). Construction went from 1,672 to 1,451.
Does Oswego County have a data center moratorium?
No county-level measure is on record for Oswego County. New York has 35 local measures statewide, listed on the state page.