Neptune Energy Center Hybrid
Solar and battery storage project in Pueblo County, Colorado. 450 MW of nameplate capacity across 2 generators, operated by Neptune Energy Center, LLC.
Also known as EIA plant 63731
This project groups Neptune Energy Center Hybrid (EIA 63731). EIA reports them as separate plants.
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 450 MWSolar 325.0 · Battery storage 125.0
- Generators
- 2 operatingEIA-860M, August 2026
- Operating since
- June 2023First generator online
- Operator
- Neptune Energy Center, LLCEIA operator ID 63427
- Grid
- PSCOBalancing authority PSCO
- Price nodes
- None linkedNo verified ISO node
- Location
- Pueblo County, CO38.3303, −104.4142
- EIA plant ID
- 63731EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Neptune Energy Center Hybrid produces
Free · EIA-923Net generation, 2025
679 GWh
679,256 MWh, final
Capacity factor, 2025
24.5%
2024: 24.8%
January to July 2026
368 GWh
Provisional
Range, 2024 to 2025
679.3–686.9
GWh a year. Low 2025, high 2024
| 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 | Not reported | Not reported | 0 of 12 |
| 2015 | Not reported | Not reported | 0 of 12 |
| 2016 | Not reported | Not reported | 0 of 12 |
| 2017 | Not reported | Not reported | 0 of 12 |
| 2018 | Not reported | Not reported | 0 of 12 |
| 2019 | Not reported | Not reported | 0 of 12 |
| 2020 | Not reported | Not reported | 0 of 12 |
| 2021 | Not reported | Not reported | 0 of 12 |
| 2022 | Not reported | Not reported | 0 of 12 |
| 2023 | 398,382 | Not reported | 7 of 12 |
| 2024 | 686,915 | 24.8% | 12 of 12 |
| 2025 | 679,256 | 24.5% | 12 of 12 |
| 2026 (provisional, partial year) | 367,987 | 23.0% | 7 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 accountNo verified ISO price node is linked to this plant, or its price history could not load.
Emissions
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. Plants without steam cooling, such as wind, solar and batteries, do not report cooling water.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| NT125 | Batteries | 125.0 | June 2023 |
| NT325 | Solar Photovoltaic | 325.0 | June 2023 |
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 Neptune Energy Center, LLC as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Modeled curtailment
A range, not one number. The lower bound counts hours inside the production tax credit window; the upper bound is the no-credit case.
Expected vs reported generation
Monthly modeled expected output and physical potential next to EIA-923 reported output.
300 analyst questions a month, plus MCP
Query Neptune Energy Center Hybrid and 14,224 other projects from Claude or your own tools. Free accounts get 1 question a day.
Power plants near Neptune Energy Center Hybrid
Questions about Neptune Energy Center Hybrid
How much power does Neptune Energy Center Hybrid produce?
Neptune Energy Center Hybrid reported 679,256 MWh (679 GWh) of net generation in 2025, a 24.5% capacity factor on 450 MW of nameplate capacity. From January to July 2026 it reported 368 GWh, which is provisional.
Where is Neptune Energy Center Hybrid?
Neptune Energy Center Hybrid is in Pueblo County, Colorado, at 38.3303, −104.4142. It is in the Public Service Company of Colorado balancing area (PSCO).
Who operates Neptune Energy Center Hybrid?
EIA-860M for August 2026 lists Neptune Energy Center, LLC as the operator (EIA operator ID 63427). The operator is not always the owner.
Is Neptune Energy Center Hybrid a solar or a battery storage plant?
Both. Solar capacity totals 325 MW and battery storage capacity totals 125 MW.
When did Neptune Energy Center Hybrid start operating?
Its first generator began operating in June 2023, according to EIA-860M.
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)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page