KRS II Koloa Solar
Kauai County, Hawaii · EIA plant ID 58640 · Operator: Kauai Island Utility Cooperative
12 MW planned (Batteries), first expected Jul 2027 · EIA-860M
Nameplate12MWSummer 12 MW
Generators1in service
Net generation18GWh12 mo to Aug 2026
Capacity factor17%solar units, summer MW
Heat rate—thermal plants only
First online2014
The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), solar units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Heat rate applies to fuel-burning (thermal) units only.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2014 | 10.4 | 23.6% | — |
| 2015 | 18 | 17.1% | — |
| 2016 | 22.5 | 21.4% | — |
| 2017 | 21.8 | 20.8% | — |
| 2018 | 18.5 | 17.6% | — |
| 2019 | 17.7 | 16.9% | — |
| 2020 | 21 | 20.0% | — |
| 2021 | 20.6 | 19.6% | — |
| 2022 | 21.4 | 20.4% | — |
| 2023 | 20.7 | 19.7% | — |
| 2024 | 19.8 | 18.8% | — |
| 2025 | 19.2 | 18.2% | — |
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| KOLPV | Solar Photovoltaic | PV | 12 | 12 | Aug 2014 | Operating | — | coming soon |
| BESS7 | Batteries | BA | 12 | 12 | planned Jul 2027 | Planned | — | coming soon |
| BESS3 | Batteries | BA | 1.5 | 1.5 | Jun 2014 | Retired May 2018 | — | coming soon |
Owner / operator
Operator: Kauai Island Utility Cooperative. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Kauai Island Utility Cooperative | 100.0% | 12 MW |
Nearby plants
Within 80 km.
| AES Lawai Solar Hybrid | 40 MW | 4.4 km |
| Biomass to Energy Facility, Kauai | 10 MW | 7.2 km |
| Kalaheo Hydro | 2 MW | 9 km |
| KIUC Kapaia PV and BA Storage Project Hybrid | 28 MW | 13 km |
| Kapaia Power Station | 39 MW | 13.1 km |
| Port Allen Solar | 6 MW | 13.6 km |