All industries › Utility solar › Pennsylvania › Firefly Solar
Utility solar · Lawrence County, Pennsylvania
Firefly Solar
A 402 MW utility solar project in Lawrence County, Pennsylvania. Firefly Solar has asked to connect to the grid or filed for its first approvals; nothing on record yet commits money to it. Public records name Vesper Energy Development LLC as its developer. No public record read so far names its builder.
The record
What the public record says about Firefly Solar, as of 22 Oct 2026.
| Stage | Queued |
|---|---|
| Construction start | Q1 2026 estimate |
| Size | 402 MW |
| Location | Lawrence County, Pennsylvania (to about 10 km) |
| Developer | Vesper Energy Development LLC |
| Grid operator | PJM |
| Builder (EPC) | Not named yet |
| Trade subcontractors | in the app |
| People to call | in the app |
| Phase windows | in the app |
Every fact in the app links to the public record behind it, with how many records agree and whether it is confirmed, reported or an estimate. What the terms mean.
What happened
Each change dated by the scene or the document, newest first.
No change on record since Groundtrace started tracking it.
Who was named on it, and when, is in the app.
Also developed by Vesper Energy Development LLC
| Project | Stage | Size |
|---|---|---|
| Juniper Creek StorageBattery storage · Sacramento County, California | Permitted | 200 MW |
| Syracuse and Tours Renewable EnergyUtility solar · Kern County, California | Permitted | 40 MW |
| Athens Solar I (Hybrid)Utility solar · Placer County, California | Queued | 250 MW |
| Scopus SolarUtility solar · Bollinger County, Missouri | Queued | 200 MW |
| Vichy SolarUtility solar · Maries County, Missouri | Queued | 200 MW |
| Meadow Springs Renewable Energy (Hybrid)Utility solar · White County, Illinois | Queued | 150 MW |
Also in Lawrence County
| Project | Stage | Size |
|---|---|---|
| Green Meadows SolarUtility solar | Under construction | 40 MW |
| Unnamed 60 MW solar projectUtility solar | Queued | 60 MW |
| Unnamed 19 MW solar projectUtility solar | Queued | 19 MW |
| Unnamed 7 MW solar projectUtility solar | Queued | 7 MW |
| Unnamed 6 MW solar projectUtility solar | Queued | 6 MW |
| Unnamed 6 MW solar projectUtility solar | Queued | 6 MW |
More
Questions
Firefly Solar, in short.
Where is Firefly Solar?
Firefly Solar is a 402 MW utility solar project in Lawrence County, Pennsylvania, in PJM's interconnection queue. The public page places it to within about ten kilometres; the precise location is in the subscriber record.
When does construction start on Firefly Solar?
Groundtrace estimates construction starts in the first quarter of 2026. This is an estimate from the project's filings, not a date any record states; the exact date and the record behind it are in the subscriber record.
Who is developing Firefly Solar?
Vesper Energy Development LLC, as the public record names it.
Who is building Firefly Solar?
No public record read so far names a builder for Firefly Solar. Groundtrace leaves the field empty rather than guess, and fills it when a permit, a filing or the builder's own page names one.
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