Willis Battery Storage — renewablesinfo.org

Willis Battery Storage — Plant Summary

EIA Plant ID: 63238
Capacity: 20 MW
Primary Fuel: Battery Storage
Technology: Batteries
Status: Operating
Location: Franklin, NY
Operating Since: 2023
Generators: 1
Operator: New York Power Authority
Parent Company: New York Power Authority
Annual Generation: -1,206 MWh
Capacity Factor: -0.7%
Balancing Authority: New York Independent System Operator
ISO/RTO: NYISO
NERC Region: NPCC

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Willis Battery Storage

OperatingBESS

Ranked #15 of 54 BESS plants in NY#483 of 837 nationally

20 MW BESS operating in Franklin, NY — New York Independent System Operator

EIA

20 MW

Nameplate Capacity

Generators

unit

Batteries

Technology

2023

Operating Since

Location

Coordinates

44.8879, -74.1183

County

Franklin, NY

Nearby Plants

Jericho Rise Wind Farm LLC
Wind77.7 MW · 1.6 km
Mine Falls Generating Station
Hydro3 MW · 3.5 km
Chateaugay High Falls Hydro
Hydro1.7 MW · 3.5 km

Ownership & Operator

Field	EIA	GEM	Wikidata
Operator	New York Power Authority	New York Power Authority	—
Owner(s)	New York Power Authority	New York Power Authority	—
Status	Operating	—	—

Ownership Chain

About

Willis Battery Storage is a 20 MW battery energy storage system located in Franklin County, New York. The plant began operating in 2023 and is owned and operated by the New York Power Authority. It is connected to the New York Independent System Operator (NYISO) balancing authority and is within the Northeast Power Coordinating Council (NPCC) NERC region.

The facility consists of a single generator utilizing battery technology. The battery energy storage system (BESS) has a storage capacity of 20 MWh, providing a duration of 1 hour. The battery chemistry is lithium-ion (LIB). Willis Battery Storage ranks as the 13th largest of 65 battery storage plants in New York state, and 692nd nationally out of 1205 such plants.

Generated from EIA, GEM, and public data sources

EIA Plant Profile

Engineering & Generators

Grid Context

NERC Region

NPCC

Balancing Authority

New York Independent System Operator

Grid Voltage

115 kV

Regulatory Status

Entity Type

State

Sector

Electric Utility

Generation

−112 MWh

Net Charging

-1.2K MWh

Annual Net Energy

-0.7%

Capacity Factor

Positive values indicate net discharge (generation exceeds station load). Negative values indicate net charging. Pure battery storage plants are typically net negative due to round-trip efficiency losses.

Financial Data

No financial data available for this plant.

Pricing & Market Data

MEDIUM confidence

Point of Interconnection

Nearest Substation

JERICHO_RISE_WT_PWR

Substation Distance

< 10 km

Coord Source

NYISO direct

Market Position