- Combustion
- Operating
- Other companies nearby
- 10 · 100 · 1,000 MW
Map
- Combustion
- Operating
- Other companies nearby
1 asset
1 asset. Basemap: Protomaps, © OpenStreetMap contributors, ODbL.
Not on this map: 1 project: placed by county or state, a license that withholds the site, or a stage the map draws no dot for (withdrawn, canceled, frozen or not stated). Each is in its tab below.
Calpine Mid-Merit LLC
Independent power producer
Key facts
Independent power producer · 1,449.4 MW- Capacity held
- 1,449.4MW
- Assets
- 1
- Projects
- 1
- States
- PA
- Registered in
- United States
- Parent
- CONSTELLATION ENERGY CORPOwnership claimOwnership link recorded from its source; no date stated by the source.
Projects 1
| Status | Name. Sort by name, A to Z | Type | MW, sorted descending. Sort by capacity, smallest first | State | Online. Sort by proposed online date, latest first | Source |
|---|---|---|---|---|---|---|
| Postponed | York Energy Center | Gas, combined cycle | 120 MW | PA | — | EIA-860M |
Sources EIA-860M
Assets 1
Assets
1
Capacity
1,449 MW
- Gas, combined cycle: 1,449 MW, 1 asset
Operates 1 power plant
| Name. Sort by name, A to Z | Type. Sort by type, A to Z | Role. Sort by role, A to Z | MW, sorted descending. Sort by capacity, smallest first | State. Sort by state, A to Z | Held by |
|---|---|---|---|---|---|
| York Energy Center | Gas, combined cycle | Operates | 1,449.4 MW | US-PA | Calpine Mid-Merit LLC |
Sources
- EIA-860M
- GEMGlobal Integrated Power Tracker, Global Energy Monitor, September 2026 release (https://globalenergymonitor.org/projects/global-integrated-power-tracker), CC BY 4.0. Modified by Inframation: TransitionZero-sourced rows removed; statuses and technologies mapped to Inframation's vocabulary; figures aggregated. Copyright © Global Energy Monitor. Global Integrated Power Tracker, September 2026 release. Distributed under a Creative Commons Attribution 4.0 International License.
Ownership 1
Companies
1
Parents
1
Subsidiaries
0
direct
-
Constellation Energy Corp Ultimate parent 52 assets26,338.6 MWwith the companies below
-
Calpine Mid-Merit LLC This company · share not stated 1 asset1,449.4 MW
-
Baytown Energy Center LLC Subsidiary · share not stated 1 asset932.9 MW
-
Brazos Valley Energy Subsidiary · share not stated 1 asset675.6 MW
-
Calpine Bethlehem LLC Subsidiary · share not stated 1 asset1,153 MW
-
Calpine California CCUS Holdings Subsidiary · share not stated 0 assets
-
Calpine Corporation Subsidiary · share not stated 11 assets3,187.3 MW
-
Calpine Eastern Corp Subsidiary · share not stated 1 asset239.6 MW
-
Calpine Energy Services, L.P. Subsidiary · share not stated 0 assets
-
Calpine Fore River Energy Center, LLC Subsidiary · share not stated 1 asset872.2 MW
-
Calpine Gilroy Cogen LP Subsidiary · share not stated 2 assets274 MW
-
Calpine King City Cogen LLC Subsidiary · share not stated 1 asset133.2 MW
-
Calpine Mid-Atlantic Generation LLC Subsidiary · share not stated 8 assets1,948.8 MW
-
Calpine New Jersey Generation LLC Subsidiary · share not stated 2 assets344 MW
-
CER Generation LLC Subsidiary · share not stated 1 asset822.8 MW
-
Constellation Power Source Generation, LLC Subsidiary · share not stated 2 assets575.1 MW
-
Constellation South Texas, LLC Subsidiary · share not stated 0 assets
-
Corpus Christi Cogeneration LLC Subsidiary · share not stated 1 asset593.3 MW
-
Creed Energy Center LLC Subsidiary · share not stated 1 asset48 MW
-
Deer Park Energy Center Subsidiary · share not stated 1 asset1,176 MW
-
Gilroy Energy Center LLC Subsidiary · share not stated 3 assets239 MW
-
Goose Haven Energy Center Subsidiary · share not stated 1 asset48 MW
-
Granite Ridge Energy LLC Subsidiary · share not stated 1 asset790 MW
-
Handsome Lake Energy LLC Subsidiary · share not stated 1 asset294.5 MW
-
Los Esteros Critical Energy Facility LLC Subsidiary · share not stated 1 asset306.1 MW
-
Los Medanos Energy Center LLC Subsidiary · share not stated 1 asset678.3 MW
-
Morgan Energy Center LLC Subsidiary · share not stated 1 asset900 MW
-
Pine Bluff Energy LLC Subsidiary · share not stated 1 asset230.4 MW
-
Russell City Energy Company LLC Subsidiary · share not stated 1 asset655 MW
-
South Point Energy Center LLC Subsidiary · share not stated 1 asset708 MW
-
Texas City Cogeneration LLC Subsidiary · share not stated 1 asset450 MW
-
Thad Hill Energy Center, LLC Subsidiary · share not stated 1 asset807 MW
-
Westbrook Energy Center Subsidiary · share not stated 2 assets685.1 MW
-
Zion Energy LLC Subsidiary · share not stated 1 asset596.7 MW
-
The same companies as a table, with each ownership claim
| Company. Sort by company, A to Z | Relationship, sorted ascending. Sort by relationship, subsidiaries first | Assets. Sort by assets held, largest first | Asset types |
|---|---|---|---|
| Constellation Energy CorpOwnership link recorded from its source; no date stated by the source. | Parent | — | — |
Sources 2
Registers
2
Reuse terms
- 1 Open license
- 1 Open license, with credit
Latest read
2026-10-30
From its recordsSourcesThe registers behind this company's assets, projects and RFPs; the company record itself is derived from them.
Sources
-
View at source →
EIA-860M ·
EIA-860M Preliminary Monthly Electric Generator Inventory
US federal work — public domain
Summary only: the source’s license keeps the full record at the source.
-
View at source →
GEM ·
Global Energy Monitor — Global Integrated Power Tracker (unit-level power plants, eight technologies, all statuses)
Global Integrated Power Tracker, Global Energy Monitor, September 2026 release (https://globalenergymonitor.org/projects/global-integrated-power-tracker), CC BY 4.0. Modified by Inframation: TransitionZero-sourced rows removed; statuses and technologies mapped to Inframation's vocabulary; figures aggregated. Copyright © Global Energy Monitor. Global Integrated Power Tracker, September 2026 release. Distributed under a Creative Commons Attribution 4.0 International License. · license
In-file notice, About sheet of Global_Integrated_Power_September_2026_V2.xlsb (the owner's download, read 2026-10-26 with pyxlsb 1.0.10; decisions log 2026-10-26): "Copyright © Global Energy Monitor. Global Integrated Power Tracker, September 2026 release. Distributed under a Creative Commons Attribution 4.0 International License. (See the CC license for attribution requirements if sharing or adapting the data set.)" and "Please note records with a “TZ ID” in the Other IDs (unit/phase) column were partially or fully sourced from the TransitionZero, Solar Asset Mapper, August 2025. Copyright © TransitionZero, Solar Asset Mapper, August 2025. Distributed under a Creative Commons Attribution-Non-Commercial 4.0 International License (CC BY-NC 4.0)." Before it was read: no licence prose on the dataset page (retrieved 2026-10-23), which gives only "The recommended citation is "Global Integrated Power Tracker, Global Energy Monitor, September 2026 release.""; GEM's download form records "Creative Commons Attribution 4.0 International (CC BY 4.0) — /creative-commons-license" (https://api.globalenergymonitor.org/static/gem-download-form.bundle.js, sha256 e5ecbeab…905e5b, retrieved 2026-10-23).
Summary only: the source’s license keeps the full record at the source.
Around this company
Nearby 3
within 15 miProjects
3
within 15 mi
Nearest
0.0 mi
York Energy Center
All 3NearbyShowing all 3 nearby projects.
| Status | Name. Sort by name, A to Z | Type | MW. Sort by capacity, largest first | Distance, sorted ascending. Sort by distance, farthest first | Nearest asset |
|---|---|---|---|---|---|
| Postponed | York Energy Center | Gas, combined cycle | 120 MW | 0.0 mi away | nearest: York Energy Center |
| Postponed | Essential Power Rock Springs LLC | Gas, combustion turbine | 390 MW | 7.9 mi away | nearest: York Energy Center |
| Under construction | 100a Swiss Dale Farm | Solar | 2 MW | 14.6 mi away | nearest: York Energy Center |
Sources EIA-860M