Query
Muddy Run
Type
Entity Briefing
Entity
Muddy Run
Generated
2026-10-17T13:07:02.376Z

Briefing on Muddy Run

Entity Briefing
Generated Oct 17, 2026·Dataset freshness not reported
1.1 GW
Capacity
Operating
Current status
1967
Operating since
8
Generators
-5.3%
Capacity factor
-502 GWh
Annual generation
Briefing/plantOperating

Muddy Run is a 1.1 GW Hydroelectric Pumped Storage asset in PJM Interconnection, currently Operating.

Muddy Run is reported in Pennsylvania since 1967 under Constellation Energy. Available operating and financial measures include -5.3% capacity factor and -502 GWh annual generation; $2294/kW reported CapEx.

Location
Lancaster, Pennsylvania
Technology
Hydroelectric Pumped Storage
Owner / parent
Constellation Energy
Operator
Constellation Power, Inc
Grid
PJM Interconnection
Plant ID
3164

What stands out

1

Muddy Run is a 1.1 GW Hydroelectric Pumped Storage asset in Pennsylvania with status Operating.

2

Latest annual operating measures report -5.3% capacity factor and -502 GWh annual generation.

3

Available financial measures include $2294/kW CapEx.

4

Latest linked story: “Constellation Energy Q1 2026 Earnings: Revenue Doubles on Calpine, EPS Guidance Affirmed” (TIKR.com, 2026-05-10).

Market and operating context

ISO / market
PJM Interconnection
Balancing authority
PJM Interconnection, LLC
NERC region
RFC
State rank
#1 of 31
National rank
#17 of 1,462

Why it matters

For this asset in PJM Interconnection, operating status, generation, ownership, and linked events are the primary facts for performance and asset-level diligence. The exact chart and source-linked records below let the reader test those facts before moving to a deeper report.