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20 MW BESS operating in Hunterdon, NJ — PJM Interconnection, LLC
20 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2024
Operating Since
Coordinates
40.5263, -74.8441
County
Hunterdon, NJ
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | VESI 23 LLC | — | — |
| Owner(s) | VESI 23 LLC | — | — |
| Status | Operating | — | — |
Justin Court Energy Storage is a 20 MW battery energy storage system (BESS) located in Hunterdon County, New Jersey. The facility, which began operating in 2024, is owned and operated by VESI 23 LLC. It is the largest of 10 battery storage plants in New Jersey, and ranks 703 out of 1205 nationally. The plant consists of a single generator utilizing battery technology with MWH as its primary fuel.
The BESS has a total storage capacity of 18.3 MWh, providing a duration of approximately 0.92 hours. The battery chemistry is lithium-ion (LIB). The plant operates within the PJM Interconnection, LLC balancing authority and the RFC NERC region.
Generated from EIA, GEM, and public data sources
ISO/RTO
PJM
Market
ISO/RTO Member
NERC Region
RFC
Balancing Authority
−209 MWh
Net Charging
-4.3K MWh
Annual Net Energy
-2.4%
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.
2023
$1,361/kW
Est. Construction Cost
Total estimated cost: $27.2M
Market Position
ISO/RTO Market
PJM
LMP Node
EFLEMING35 KV COPHILSP
Pricing Hub
WESTERN HUB
Location Type
Generation Node
Node Source
Curated node match
Last updated 2026-03-14
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ask pi about Justin Court Energy StoragePJM Interconnection, LLC (PJM)
Grid Voltage
34.5 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP