Arapahoe Combustion Turbine Project — Plant Summary
- EIA Plant ID
- 55200
- Capacity
- 194 MW
- Primary Fuel
- Natural Gas
- Technology
- Natural Gas Fired Combined Cycle
- Status
- Operating
- Location
- Denver, CO
- Operating Since
- 2000
- Generators
- 3
- Operator
- SWG Arapahoe, LLC
- Parent Company
- Onward Energy Holdings
- Annual Generation
- 310,442 MWh
- Capacity Factor
- 18.2%
- Balancing Authority
- Public Service Company of Colorado
- ISO/RTO
- —
- NERC Region
- WECC
Arapahoe Combustion Turbine Project
OperatingNatural Gas
Ranked #15 of 32 Natural Gas plants in CO#755 of 2009 nationally
194 MW Natural Gas operating in Denver, CO — Public Service Company of Colorado
EIAWD
194 MW
Nameplate Capacity
3
Generators
units
Natural Gas Fired Combined Cycle
Technology
2000
Operating Since
Location
Coordinates
39.6692, -105.0018
County
Denver, CO
Nearby Plants
- Hillcrest Pump StationHydro2 MW · 8.1 km
- Mtn. Solar 4 (CSG)Solar1.5 MW · 11.5 km
- SELCO Community SolarSolar3 MW · 11.5 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | SWG Arapahoe, LLC | SWG Arapahoe | — |
| Owner(s) | SWG Arapahoe, LLC | Onward Energy Holdings | — |
| Status | Operating | — | — |
Ownership Chain
About
The Arapahoe Combustion Turbine Project is a 194 MW natural gas-fired combined cycle power plant located in Denver County, Colorado. The plant began operating in 2000 and consists of three generators. It is owned by Onward Energy Holdings and operated by SWG Arapahoe, LLC. The plant's balancing authority is the Public Service Company of Colorado, and it operates within the Western Electricity Coordinating Council (WECC) NERC region.
In the most recent year with available data, the plant generated 310,442 MWh, achieving a capacity factor of 18.2%. The Arapahoe Combustion Turbine Project is ranked as the 16th largest power plant out of 24 in Colorado, and 753rd out of 945 nationally. Financial data indicates a power purchase agreement (PPA) price of $5.71 per MWh, as reported to FERC.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
WECC
Balancing Authority
Public Service Company of Colorado
Grid Voltage
115 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
Generation
23.8K MWh
Latest Month
310.4K MWh
Annual Generation
18.2%
Capacity Factor
Jan 2023 – Dec 2025
Financial DataBeta
Source: FERC Electric Quarterly ReportsHIGH
$7.1/MWh
PPA Price
SWG Arapahoe, LLC
Contract Seller
Per-Unit Cost Trends
Pricing & Market Data
This plant is outside organized wholesale electricity markets (ISOs/RTOs). Nodal pricing data is not available.
News & Articles (5)Beta
General
Denver’s landfill will convert methane emitted from decomposing trash into natural gas
Denver and WM, a large waste management companies, will build a renewable natural gas plant at the city's landfill in Arapahoe County.
The Denver Post·3 months ago
Industry·other
Colorado’s two largest energy co-ops break from Xcel, Tri-State aiming for more local control and lower costs
The state's two largest cooperatives, Sedalia-based CORE Electric Cooperative and Brighton-based United Power, are each poised to leave their long-time power...
CORE Electric Cooperative (other)United Power (other)
The Colorado Sun·1 years ago
Industry·other
Valmont power plant history: A century of fueling Boulder’s growth and environmental challenges
Burning coal for nearly a century transformed Boulder from a small town into a tech hub and research center, but remnants of that coal pollution remain.
Valmont (operator)Boulder (other)
The Boulder Reporting Lab·2 years ago
Industry·other
Xcel Energy Closure of Valmont Power Station
Located at 1800 North 63rd Street, in unincorporated Boulder County, the Valmont Power Station burned coal in electricity production in the mid-1920s.
Xcel Energy (operator)Valmont Power Station (operator)
Boulder County (.gov)·3 years ago
Last updated 2026-03-26
View all 5 articles