JM Shafer Generating Station — Plant Summary
- EIA Plant ID
- 50707
- Capacity
- 396.9 MW
- Primary Fuel
- Natural Gas
- Technology
- Natural Gas Fired Combined Cycle
- Status
- Operating
- Location
- Weld, CO
- Operating Since
- 1994
- Generators
- 7
- Operator
- Tri-State G & T Assn, Inc
- Parent Company
- —
- Annual Generation
- 716,612 MWh
- Capacity Factor
- 20.6%
- Balancing Authority
- Public Service Company of Colorado
- ISO/RTO
- —
- NERC Region
- WECC
JM Shafer Generating Station
OperatingNatural Gas
Ranked #10 of 32 Natural Gas plants in CO#550 of 2009 nationally
396.9 MW Natural Gas operating in Weld, CO — Public Service Company of Colorado
EIAWD
396.9 MW
Nameplate Capacity
7
Generators
units
Natural Gas Fired Combined Cycle
Technology
1994
Operating Since
Location
Coordinates
40.0980, -104.7738
County
Weld, CO
Nearby Plants
- Fort LuptonNatural Gas100.8 MW · 0.3 km
- SR Jenkins Ft LuptonSolar13 MW · 2.9 km
- Spindle Hill Energy CenterNatural Gas420 MW · 9.7 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Tri-State G & T Assn, Inc | — | — |
| Owner(s) | Tri-State G & T Assn, Inc | — | — |
| Status | Operating | — | — |
Ownership Chain
No GEM tracker match for this plant — ownership chain unavailable.
About
The JM Shafer Generating Station is a 396.9 MW natural gas-fired combined cycle power plant located in Weld County, Colorado. The plant, which began operating in 1994, consists of seven generators. It is owned and operated by Tri-State Generation and Transmission Association, Inc. The plant operates within the Public Service Company of Colorado balancing authority and the Western Electricity Coordinating Council (WECC) NERC region.
In the most recent year of data, the JM Shafer Generating Station produced 716,612 MWh of electricity, achieving a capacity factor of 20.6%. According to available data, the installed cost of the plant was $783 per kW. The JM Shafer Generating Station is ranked as the 10th largest power plant in Colorado out of 24, and 552nd nationally out of 945 plants.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
WECC
Balancing Authority
Public Service Company of Colorado
Grid Voltage
230 kV
Regulatory Status
RE
Entity Type
Cooperative
Sector
Electric Utility
Generation
71.0K MWh
Latest Month
716.6K MWh
Annual Generation
20.6%
Capacity Factor
Jan 2023 – Dec 2025
Financial DataBeta
Source: FERC Form 1HIGH
$783/kW
Installed Cost
$42.6/MWh
Operating Cost
tri-state generation and transmission association (pudl determined)
Reporting Utility
Annual Capital & Operating Expenses
Cumulative Installed Cost
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 (2)Beta
Industry·corporate
A power company plans for life after coal
Tri-State is adding lots of renewable energy resources. But does it need a new natural gas plant as it prepares for 2030?
Tri-State (operator)
Colorado Newsline·10 months ago
Industry·corporate
Weld County’s top 10 greenhouse gas emitters work to curb emissions
Operators of the 10 facilities in Weld County that reported the highest volume of greenhouse gases in 2017 work to bring Front Range residents energy, waste...
Greeley Tribune·7 years ago
Last updated 2026-03-26
View all articles