United States › Grid › Interconnection queues
OCTARY USA · INTERCONNECTION QUEUESBattery storage interconnection queue in the USA — page 23
Before a new power plant or battery can connect to the US grid, it joins a queue for studies and an interconnection agreement. Most requests never get built. This shows every request: active, built and withdrawn.
Requests shown2,226417.8 GW
Active in queue417.8 GW2,226 requests
Agreement signed76.1 GW459 requests
Withdrawn3,516554.5 GW never built
Map
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In studyAgreement signedUnder constructionBuiltSuspendedWithdrawn
Requests
2,226 requests · page 23 of 45
| Project | Capacity | Status |
|---|---|---|
| Energy Storage Battery storage |
170 MW | Agreement signed |
| Battery storage project AI1-156, Kane County Battery storage |
170 MW | In study |
| Battery Storage Battery storage |
168 MW | In study |
| Carol Battery Battery storage |
168 MW | Paused / redesign |
| Battery storage project GEN-2024-084, Lawrence County Battery storage |
167 MW | In study |
| Battery storage project Q479, Maricopa County Battery storage |
165 MW | In study |
| Houston IV BESS Battery storage · SMT Houston IV LLC |
165 MW | Agreement signed |
| Dos Rios Energy Storage SLF Battery storage · DOS RIOS SOLAR, LLC |
165 MW | Agreement signed |
| Zeppelin Energy Storage Battery storage · ZEPPELIN ENERGY STORAGE LLC |
164 MW | In study |
| BRP Pollux BESS Battery storage · BRP Pollux BESS LLC |
163 MW | In study |
| Battery storage project T2-080, Salt Lake County Battery storage |
160 MW | In study |
| Battery storage project GEN-2024-324, Chaves County Battery storage |
160 MW | In study |
| Battery storage project J1355, Laporte County Battery storage |
160 MW | Agreement signed |
| Battery storage project J2997, Livingston County Battery storage |
160 MW | In study |
| Erie East Energy Battery storage |
160 MW | Paused / redesign |
| Battery storage project 22, Sacramento County Battery storage |
160 MW | In study |
| Albatross BESS 2 Battery storage · Albatross Solar, LLC |
160 MW | In study |
| High Plains Storage Battery storage · ROBP Holdings, LLC |
158 MW | In study |
| Otter BESS Battery storage · GRS BESS TEXAS TEN, LLC |
157 MW | In study |
| Pecan BESS Battery storage · Gransolar Texas Three LLC |
157 MW | In study |
| Cartwheel BESS 2 Battery storage · RWE Renewables |
157 MW | In study |
| Strawberry Acres Storage Battery storage · Strawberry Acres Energy Center, LLC |
157 MW | In study |
| Coyote Den Storage Battery storage · Coyote Den Energy Center, LLC |
157 MW | In study |
| Purple Sage BESS 2 Battery storage · Purple Sage, LLC |
156 MW | Agreement signed |
| Chimney Rock BESS Battery storage · Taylor ESS, LLC |
156 MW | In study |
| Purple Sage BESS 1 Battery storage · Purple Sage, LLC |
156 MW | Agreement signed |
| Antonio Road BESS Battery storage · Tempus Power management LLC |
156 MW | In study |
| SOSA Storage Battery storage · Sosa Energy Center, LLC |
155 MW | Agreement signed |
| Ranger BESS Battery storage · Nova Clean Energy LLC |
155 MW | In study |
| Battery storage project Q2503, Maricopa County Battery storage |
155 MW | In study |
| Dorsey Road BESS Battery storage · Horizon Energy Storage Greenfield Project Holdings LLC |
155 MW | In study |
| Berryman Road Storage Battery storage · Horizon Energy Storage Greenfield Project Holdings LLC |
155 MW | In study |
| Bowstring BESS Battery storage · Longbow Energy Storage, LLC |
155 MW | Agreement signed |
| Gunnar BESS Battery storage · Gunnar Reliability Project LLC |
155 MW | Agreement signed |
| Bastion BESS Battery storage · BESS BASTION LLC |
154 MW | In study |
| Valcrest BESS Battery storage · Flexen USA LLC |
154 MW | In study |
| Roble BESS Battery storage · Flexen USA LLC |
154 MW | In study |
| Crowned Heron BESS 2 Battery storage · RWE Renewables |
154 MW | Agreement signed |
| Cartwheel BESS 1 Battery storage · Cartwheel BESS, LLC |
154 MW | Agreement signed |
| Pavo Creek Storage Battery storage · Pavo Creek Storage, LLC |
154 MW | In study |
| Crowned Heron BESS Battery storage · RWE Renewables |
154 MW | Agreement signed |
| Maderagemela BESS1 Battery storage · Twinwood ES1, LLC |
154 MW | In study |
| Blanco County Behrends Storage Battery storage · DM-BCB, LLC |
154 MW | In study |
| Bonaparte BESS Battery storage · Bonaparte BESS, LLC |
154 MW | In study |
| Zinfandel Storage Center Battery storage |
154 MW | In study |
| Zorro BESS Battery storage · ZORRO BESS LLC |
154 MW | Agreement signed |
| Whiskey BESS Battery storage · Whiskey BESS LLC |
154 MW | Agreement signed |
| Wichita County Mawson Storage Battery storage · DM-WCM, LLC |
154 MW | In study |
| Kit Fox Storage Battery storage · Kit Fox Storage, LLC |
154 MW | In study |
| Palisade BESS Battery storage · Flexen USA LLC |
154 MW | In study |
Page 23 of 45
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Capacity in the queue by state
Click a state to drill down.
AK–ME–VT39MWNH–WA8.9GWID3GWMT1.1GWND2.1GWMN7.7GWIL17GWWI2.6GWMI15GWNY11GWRI205MWMA5.9GWOR23GWNV14GWWY929MWSD700MWIA3.3GWIN10GWOH1.8GWPA1.9GWNJ3.7GWCT347MWCA54GWUT5.8GWCO3.4GWNE2.5GWMO5.8GWKY1.7GWWV30MWVA9.9GWMD3.1GWDE350MWAZ12GWNM6.2GWKS5.7GWAR2GWTN747MWNC4GWSC2.2GWDC–OK11GWLA3GWMS1.9GWAL1.5GWGA7.3GWHI–TX138GWFL1.8GW
By grid region
ISO/RTO markets and the non-ISO West and Southeast.
- ERCOT (Texas)724 · 133.4 GW
- West (non-ISO utilities)352 · 82.2 GW
- MISO (Midcontinent)305 · 55.0 GW
- CAISO (California)175 · 48.7 GW
- SPP (Southwest Power Pool)198 · 31.4 GW
- PJM (Mid-Atlantic, Midwest)248 · 29.6 GW
- Southeast (non-ISO utilities)109 · 19.4 GW
- NYISO (New York)84 · 11.1 GW
- ISO-NE (New England)31 · 6,907 MW
Requests by year joined
Capacity of requests in this view, by the year they entered the queue. Click a year.
20112025
Source: Rand, J. et al., Queued Up, Lawrence Berkeley National Laboratory, data through end of 2025. Compiled from the queues of the 7 ISO/RTOs and dozens of non-ISO utilities. A request is a proposal to connect, not a commitment to build: historically most are withdrawn. Capacity is the requested interconnection size; hybrids include the storage component. Transmission lines · Planned power plants (EIA)