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401.6 MW Solar planned in Lawrence, PA — PJM Interconnection, LLC
401.6 MW
Nameplate Capacity
1
Generators
unit
Solar Photovoltaic
Technology
Planned: —
Planned Operation
Coordinates
40.9303, -80.4324
County
Lawrence, PA
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Vesper Energy Development LLC | — | — |
| Owner(s) | Vesper Energy Development LLC | — | — |
| Status | Planned | pre-construction | — |
Firefly Solar PA is a 401.6 MW solar photovoltaic power plant located in Lawrence County, Pennsylvania. It is the largest solar plant in the state, ranking first among eleven solar facilities, and 37th nationally out of 639. The plant has a single generator and utilizes fixed-tilt solar tracking technology.
The plant is operated by Vesper Energy Development LLC and falls within the PJM Interconnection, LLC balancing authority and the RFC NERC region. Its primary fuel source is solar energy (SUN).
Generated from EIA, GEM, and public data sources
ISO/RTO
PJM
Market
ISO/RTO Member
NERC Region
RFC
Balancing Authority
No generation data available for this plant.
2023
$2,584/kW
Est. Construction Cost
Total estimated cost: $1.0B
Market Position
ISO/RTO Market
PJM
LMP Node
Hoytdale-McClelland 345kV
Pricing Hub
WESTERN HUB
Node Source
EIA-860 direct report
Last updated 2026-03-14
View all articlesPJM Interconnection, LLC (PJM)
Grid Voltage
—
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP