Gilliam County, Oregon: Power, Data Centers and the Local Economy
Gilliam County hosts some of the generating capacity Oregon runs on. Gilliam County is home to Condon and Arlington. 82 MW of new generation is planned here across 2 units, led by Avangrid Power LLC (solar), the 8th largest pipeline among Oregon's counties. 82 MW of it is already under construction or built. Next door, Morrow County has 15 data centers and 2,765 MW of planned generation. Its power plants have 1,884 MW of capacity, 91% of it wind, the 5th largest fleet in Oregon. 362 MW of that came online in 2019 or later, mostly wind.
Cities and towns in Gilliam County
Gilliam County is home to Condon and Arlington.
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 Gilliam County
1st = the most. Ranks cover counties with a value on record.
| Measure | Then | Now | Change | Rank in Oregon |
|---|---|---|---|---|
| Population (2020 → 2025) | 2,014 | 1,971 | ▼ 2.1% | 35th of 36 by size |
| Total jobs (2019 → 2025) | 938 | 966 | ▲ 3.0% | 14th of 36 by growth |
| Average annual pay (2019 → 2025) | $47,295 | $67,012 | ▲ 41.7% | — |
| Unemployment rate (2019 → August 2026) | 3.7% | 4.1% | ▲ 0.4pts | — |
| Generating capacity added since 2019 | — | 362 MW | — | |
| Generating capacity retired since 2019 | — | 0 MW | — | |
| Planned generation (Aug 2026) | — | 82 MW | 4% of today's fleet | 8th of 11 by size |
Employers here counted 966 jobs in 2025, up 3.0% from 2019. PacifiCorp is the largest utility serving Gilliam County, one of 4 with territory here. Its residential customers paid an average 14.02¢/kWh in 2024, above the 11.02¢ median for Oregon utilities. Unemployment was 4.1% in August 2026, against 3.7% in 2019. 1,971 people live here, down 2.1% since 2020.
Who powers Gilliam County
Net change in operating capacity since 2019: +362 MW. Colors follow the fuel legend above.
Utilities with service territory in Gilliam County
| Utility | Ownership | Service | Residential customers (systemwide) | Residential price, 2024 | Commercial share of sales |
|---|---|---|---|---|---|
| PacifiCorp | Investor Owned | Bundled | 547,235 | 14.02¢ | 47% |
| Bonneville Power Administration | Federal | Bundled | — | — | 100% |
| Columbia Basin Elec Cooperative, Inc | — | — | — | — | — |
| Wasco Electric Coop, Inc | — | — | — | — | — |
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 12
| Technology | Capacity | Share |
|---|---|---|
| Wind | 1,709 MW | 91% |
| Solar | 162 MW | 9% |
| Other technologies | 13 MW | 1% |
| Largest plants | Owner | Technology | MW | Since |
|---|---|---|---|---|
| Horseshoe Bend Wind LLC | Shepherds Flat Wind LLC | Wind | 290 MW | 2012 |
| South Hurlburt Wind LLC | Shepherds Flat Wind LLC | Wind | 290 MW | 2012 |
| North Hurlburt Wind LLC | Shepherds Flat Wind LLC | Wind | 265 MW | 2012 |
| Montague Wind Power Facility LLC | Avangrid Power LLC | Wind | 200 MW | 2019 |
| Leaning Juniper Wind Power II | Avangrid Power LLC | Wind | 199 MW | 2011 |
| Montague Solar | Avangrid Power LLC | Solar | 162 MW | 2023 |
Planned generation 2
| Plant | Technology | MW | Status | Year | Owner |
|---|---|---|---|---|---|
| Oregon Trail Solar | Solar Photovoltaic | 41 MW | Under construction (≤50%) | 2027 | Avangrid Power LLC |
| Shutler Energy Storage | Batteries | 41 MW | Under construction (≤50%) | 2028 | Avangrid Power LLC |
The Gilliam County labor market
| Industry (2025) | Jobs | Average pay | Concentration vs U.S. |
|---|---|---|---|
| All industries | 966 | $67,012 | 1.00 |
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 Gilliam County
No data center, local measure or delayed project is on record in Gilliam County. Oregon has 7 local measures on record statewide.
Gilliam County and its neighbors
Of the 5 counties that border Gilliam County, Morrow 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 |
|---|---|---|---|---|---|---|
| Gilliam County | 1,971 | ▲ 3.0% | 1,884 MW | 82 MW | — | — |
| Klickitat County WA | 24,331 | ▼ 4.3% | 1,708 MW | 300 MW | — | — |
| Morrow County | 12,602 | ▲ 8.6% | 1,943 MW | 2,765 MW | 15 | — |
| Sherman County | 2,051 | ▼ 1.6% | 3,426 MW | 1,050 MW | — | — |
| Wasco County | 26,310 | ▼ 2.0% | 2,038 MW | 2,103 MW | 4 | — |
| Wheeler County | 1,472 | ▲ 11.7% | — | — | — | — |
More of Oregon
Gilliam County, answered from the record
Who provides electricity in Gilliam County, Oregon?
4 utilities have service territory in Gilliam County in the EIA-861 2024 report: PacifiCorp, Bonneville Power Administration, Columbia Basin Elec Cooperative, Inc, Wasco Electric Coop, Inc. The largest, PacifiCorp, charged residential customers 14.02¢/kWh on average in 2024.
What power plants are in Gilliam County?
12 operating plants with 1,884 MW of capacity. The largest is Horseshoe Bend Wind LLC (290 MW, wind).
How much new power is planned in Gilliam County?
82 MW across 2 units in the August 2026 EIA-860M inventory, 82 MW of it under construction or built. The largest owner is Avangrid Power LLC.
Are there data centers in Gilliam County?
The SAVRN Data Center Map has no data center in Gilliam County. The nearest activity on record is next door in Morrow County.
Is Gilliam County adding jobs?
Employers counted 966 jobs in 2025 against 938 in 2019 (+3.0%, BLS QCEW).
Does Gilliam County have a data center moratorium?
No county-level measure is on record for Gilliam County. Oregon has 7 local measures statewide, listed on the state page.