Rubart
Natural gas power plant in Grant County, Kansas. 120 MW of nameplate capacity across 12 generators, operated by Sunflower Electric Power Corp.
Also known as Rubart Power Station · EIA plant 58255
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 120 MWNameplate
- Generators
- 12 operatingEIA-860M, August 2026
- Operating since
- September 2014First generator online
- Operator
- Sunflower Electric Power CorpEIA operator ID 18315
- Grid
- SPPBalancing authority SWPP
- Price nodes
- 12 SPP nodesResource nodes with prices
- Location
- Grant County, KS37.5586, −101.0994
- EIA plant ID
- 58255EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Rubart produces
Free · EIA-923Net generation, 2025
37.3 GWh
37,266 MWh, final
Capacity factor, 2025
3.5%
2024: 3.9%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
16.9–131.0
GWh a year. Low 2020, high 2022
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | Not reported | Not reported | 0 of 12 |
| 2002 | Not reported | Not reported | 0 of 12 |
| 2003 | Not reported | Not reported | 0 of 12 |
| 2004 | Not reported | Not reported | 0 of 12 |
| 2005 | Not reported | Not reported | 0 of 12 |
| 2006 | Not reported | Not reported | 0 of 12 |
| 2007 | Not reported | Not reported | 0 of 12 |
| 2008 | Not reported | Not reported | 0 of 12 |
| 2009 | Not reported | Not reported | 0 of 12 |
| 2010 | Not reported | Not reported | 0 of 12 |
| 2011 | Not reported | Not reported | 0 of 12 |
| 2012 | Not reported | Not reported | 0 of 12 |
| 2013 | Not reported | Not reported | 0 of 12 |
| 2014 | 9,005 | Not reported | 4 of 12 |
| 2015 | 40,093 | 3.8% | 12 of 12 |
| 2016 | 37,357 | 3.5% | 12 of 12 |
| 2017 | 31,386 | 3.0% | 12 of 12 |
| 2018 | 25,606 | 2.4% | 12 of 12 |
| 2019 | 23,141 | 2.2% | 12 of 12 |
| 2020 | 16,897 | 1.6% | 12 of 12 |
| 2021 | 51,776 | 4.9% | 12 of 12 |
| 2022 | 130,957 | 12.5% | 12 of 12 |
| 2023 | 70,253 | 6.7% | 12 of 12 |
| 2024 | 40,886 | 3.9% | 12 of 12 |
| 2025 | 37,266 | 3.5% | 12 of 12 |
| 2026 (provisional, partial year) | Not reported | Not reported | 0 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free account · SPPEmissions
Free · EPA CAMPDNo EPA emissions units are linked to this plant.
Water use
Free · EIA-923 cooling, USGSNo EIA cooling-water record for this plant in 2024.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 01 | Natural Gas Internal Combustion Engine | 10.0 | September 2014 |
| 02 | Natural Gas Internal Combustion Engine | 10.0 | September 2014 |
| 03 | Natural Gas Internal Combustion Engine | 10.0 | September 2014 |
| 04 | Natural Gas Internal Combustion Engine | 10.0 | September 2014 |
| 05 | Natural Gas Internal Combustion Engine | 10.0 | September 2014 |
| 06 | Natural Gas Internal Combustion Engine | 10.0 | September 2014 |
| 07 | Natural Gas Internal Combustion Engine | 10.0 | September 2014 |
| 08 | Natural Gas Internal Combustion Engine | 10.0 | September 2014 |
| 09 | Natural Gas Internal Combustion Engine | 10.0 | September 2014 |
| 10 | Natural Gas Internal Combustion Engine | 10.0 | September 2014 |
| 11 | Natural Gas Internal Combustion Engine | 10.0 | September 2014 |
| 12 | Natural Gas Internal Combustion Engine | 10.0 | September 2014 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists Sunflower Electric Power Corp as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Generation potential vs reported
Monthly potential at seasonal net capability, next to EIA-923 output. Shows how much of the plant's capability was used.
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Power plants near Rubart
More plants operated by Sunflower Electric Power Corp
Questions about Rubart
How much power does Rubart produce?
Rubart reported 37,266 MWh (37.3 GWh) of net generation in 2025, a 3.5% capacity factor on 120 MW of nameplate capacity.
Where is Rubart?
Rubart is in Grant County, Kansas, at 37.5586, −101.0994. It is in the Southwest Power Pool balancing area (SWPP).
Who operates Rubart?
EIA-860M for August 2026 lists Sunflower Electric Power Corp as the operator (EIA operator ID 18315). The operator is not always the owner.
When did Rubart start operating?
Its first generator began operating in September 2014, according to EIA-860M.
Does InfraMap have power prices for Rubart?
Yes. InfraMap has SPP day-ahead and real-time prices at 12 price nodes linked to Rubart, with the hub price and node-to-hub basis. Prices are free with an InfraMap account; pricing node names are part of InfraMap Pro.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- SPP day-ahead and real-time prices; node and hub assignments as of 2026-10-05
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page