Baldy Mesa Solar & Storage

OperatingBESSSolarHybrid

Ranked #56 of 963 Solar plants in CA#282 of 7447 nationally

225 MW Batteries (75 MW) + Solar Photovoltaic (150 MW) operating in San Bernardino, CA — California Independent System Operator

EIAGEM

225 MW

Nameplate Capacity

Generators

units

Hybrid (2)

Technology

Batteries + Solar Photovoltaic

2024

Operating Since

Location

Coordinates

34.6092, -117.4543

County

San Bernardino, CA

Nearby Plants

Baldy Mesa 2_Silver Peak Hybrid
BESS75 MW · 0.1 km
Otoe Solar Power Generation Station 1 LL
Solar1.5 MW · 6.3 km
Coronus Adelanto West 1
Solar1.5 MW · 6.8 km

Ownership & Operator

Field	EIA	GEM	Wikidata
Operator	AES Clean Energy	AES	—
Owner(s)	AES Clean Energy	AES	—
Status	Operating	operating	—

Ownership Chain

About

Baldy Mesa Solar & Storage is a hybrid power plant located in San Bernardino County, California. The plant, owned by AES and operated by AES Clean Energy, began operating in 2024. It has a total capacity of 225 MW and consists of two generators utilizing both solar photovoltaic and battery storage technologies. The battery energy storage system (BESS) has a capacity of 300 MWh, providing a duration of 4 hours and employing lithium-ion battery (LIB) chemistry. The solar component uses single-axis tracking.

The plant's latest annual generation was 297,449 MWh, resulting in a capacity factor of 15.1%. Baldy Mesa Solar & Storage operates within the California Independent System Operator (CAISO) balancing authority and the Western Electricity Coordinating Council (WECC) NERC region. The plant ranks 59th out of 112 power plants in California and 240th out of 514 nationally. Financial data is available for the plant from LBNL Solar.

Generated from EIA, GEM, and public data sources

EIA Plant Profile Global Energy Monitor

Engineering & Generators

Grid Context

NERC Region

WECC

Balancing Authority

California Independent System Operator

Grid Voltage

115 kV

Regulatory Status

Entity Type

Independent Power Producer

Sector

IPP Non-CHP

Interconnection Queue3 projectsBeta

VENTANA RELIABILITY PROJECT

WithdrawnBattery254.3 MWCAISO

Generation

14.8K MWh

Latest Month

297.4K MWh

Annual Generation

15.1%

Capacity Factor

Financial DataBeta

Source: LBNL Utility-Scale SolarHIGH

Pricing & Market Data

MEDIUM confidence

Point of Interconnection

Nearest Substation

Hamlin Substation · 230 kV

Substation Distance

< 10 km

Operator

AES

Coord Source

OSM spatial

Market Position

ISO/RTO Market

CAISO

LMP Node

—

Pricing Hub

TH_SP15_GEN-APND

Node Source

Shared substation inference

Substation identified. Node ID not yet resolved against ISO roster.

ROADWAY_1_N001Nearby ISO Node

Adelanto Converter StationSubstation

News & Articles (9)Beta

Deals·ppa

Renewable hybrid project tied to Amazon PPA reaches commercial operations

Amazon has signed a power purchase agreement (PPA) to source power from AES from two of its new solar-plus-storage power plants in Adelanto, in California's...

Amazon (buyer)AES (seller)

Data Center Dynamics·1 years ago

Deals·ppa

Amazon, community choice groups buy power from hybrid solar, wind and BESS in California

Power from new co-located renewable energy and battery projects in California will be bought by Amazon and a number of Community Choice Aggregators (CCAs).

Amazon (buyer)Community Choice Aggregators (buyer)

Energy-Storage.News·1 years ago

Industry·technology

Meet the AI-powered robot that’s helping build Amazon-backed solar farms

Invented and owned by energy company and developer AES, Maximo can reduce solar installation timelines and costs by as much 50%, which AES says is helping...

AES (developer)Amazon (other)

About Amazon·1 years ago