Athens Solar I (Hybrid) — Plant Summary
- EIA Plant ID
- 67982
- Capacity
- 500 MW
- Primary Fuel
- Battery Storage
- Technology
- Batteries, Solar Photovoltaic
- Status
- Planned
- Location
- Placer, CA
- Operating Since
- —
- Generators
- 2
- Operator
- Vesper Energy Development LLC
- Parent Company
- —
- Balancing Authority
- California Independent System Operator
- ISO/RTO
- CAISO
- NERC Region
- WECC
Athens Solar I (Hybrid)
PlannedBESSSolarHybridGEM: announced
Ranked #6 of 191 BESS plants in CA#44 of 837 nationally
500 MW Batteries (250 MW) + Solar Photovoltaic (250 MW) planned in Placer, CA — California Independent System Operator
EIAGEM
500 MW
Nameplate Capacity
2
Generators
units
Hybrid (2)
Technology
Batteries + Solar Photovoltaic
Planned: —
Planned Operation
Location
Coordinates
35.7549, -121.4071
County
Placer, CA
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Vesper Energy Development LLC | — | — |
| Owner(s) | Vesper Energy Development LLC | — | — |
| Status | Planned | announced | — |
Ownership Chain
No GEM tracker match for this plant — ownership chain unavailable.
About
Athens Solar I (Hybrid) is a 500 MW hybrid power plant located in Placer County, California. The facility, which combines solar photovoltaic generation with battery storage, is owned and operated by Vesper Energy Development LLC. It interconnects to the grid within the California Independent System Operator (CAISO) balancing authority, part of the Western Electricity Coordinating Council (WECC) NERC region. The plant utilizes fixed-tilt solar tracking technology.
The plant's primary fuel source is electricity (MWH), reflecting its hybrid nature. Athens Solar I (Hybrid) consists of two generators utilizing both solar photovoltaic and battery technologies. In terms of capacity, Athens Solar I (Hybrid) ranks as the 9th largest solar facility out of 112 in California and 63rd nationally out of 514.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
WECC
Balancing Authority
California Independent System Operator
Grid Voltage
230 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
Generation
No generation data available for this plant.
Financial Data
No financial data available for this plant.
Pricing & Market Data
UNKNOWN confidenceMarket Position
ISO/RTO Market
CAISO
LMP Node
—
Pricing Hub
TH_ZP26_GEN-APND
Node Source
Plant coordinates only
News & Articles (2)Beta
Industry·technology
Athens International Airport builds biggest photovoltaic-BESS plant
Athens International Airport (AIA) has a PV plant of 51.5 MW with 82 MWh in energy storage, the largest such facility in Europe.
Athens International Airport (operator)
Balkan Green Energy News·2 months ago
Industry·technology
Eos to install 4MWh of ‘safe’ zinc battery technology – at giant oil refinery
Eos Energy Storage will deploy a megawatt-scale, behind-the-meter zinc hybrid cathode battery energy storage system for a large oil refinery in Greece.
Eos Energy Storage (developer)
Energy-Storage.News·5 years ago
Last updated 2026-03-14
View all articles