How many planned battery storage projects are in ERCOT?

There are 900 planned battery storage projects in ERCOT.

What is the total planned battery storage capacity in ERCOT?

The total planned battery storage capacity in ERCOT is 161,693 MW.

What is the largest planned battery storage project in ERCOT?

The largest planned battery storage project in ERCOT is Zeus Armstrong BESS at 1,043 MW, located in Armstrong, Texas.

How many developers have planned battery storage projects in ERCOT?

There are 125 unique developers with planned battery storage projects in ERCOT.

Planned Battery Storage Projects in ERCOT

Explore the largest battery storage projects expected to come online in ERCOT and see all proposed battery storage projects on a map.

Last updated: September 2026

On this page, you can explore our database of planned battery storage projects in ERCOT. Each month, we track projects in development and update our list of the largest battery storage projects expected to come online in ERCOT.

As of September 2026, there are 900 battery storage projects in development in ERCOT, according to Cleanview's project tracker. Their total planned capacity is 161,693 MW. See also: operating battery storage projects in ERCOT→

Planned Projects

900

Planned Capacity

161,693 MW

Unique Developers

125

Largest Planned Battery Storage Projects in ERCOT

Zeus Armstrong BESS

1,043 MW

Expected Online: April 2028

Location: Armstrong, Texas

Developer: Unable to find

Zeus Scurry BESS

1,043 MW

Expected Online: October 2028

Location: Scurry, Texas

Zeus Mitchell BESS

1,043 MW

Expected Online: April 2029

Location: Mitchell, Texas

Zeus Mitchell BESS II

1,043 MW

Expected Online: May 2027

Location: Mitchell, Texas

Kickstart Energy Storage VI

1,026 MW

Expected Online: December 2029

Location: Ellis, Texas

Prairie Point Energy Storage I

1,000 MW

Expected Online: December 2027

Location: Wise, Texas

Prairie Point Energy Storage II

1,000 MW

Expected Online: December 2027

Location: Wise, Texas

Kickstart Energy Storage V

999 MW

Expected Online: December 2029

Location: Ellis, Texas

Nabla Energy Storage I

750 MW

Expected Online: September 2029

Location: Parker, Texas

Battery Storage Projects Coming Online Soon in ERCOT

Tidwell Prairie II Batt

204 MW

Expected Online: October 2026

Location: Robertson, Texas

Developer: Jupiter Power

Barton Branch IA

204 MW

Expected Online: October 2026

Location: Robertson, Texas

Developer: Unable to find

Callisto II Energy Center

203 MW

Expected Online: October 2026

Location: Harris, Texas

Developer: Jupiter Power

Apache Hill BESS

201 MW

Expected Online: October 2026

Location: Hood, Texas

Developer: Vitis Energy

Arroyo Storage

184 MW

Expected Online: October 2026

Location: Cameron, Texas

Developer: Excelsior Energy Capital

Crowned Heron BESS

154 MW

Expected Online: October 2026

Location: Fort Bend, Texas

Developer: RWE

Crowned Heron BESS 2

154 MW

Expected Online: October 2026

Location: Fort Bend, Texas

Developer: RWE

Bird Dog Energy Storage

60 MW

Expected Online: October 2026

Location: Live Oak, Texas

Developer: Ormat Technologies

Knapp BESS

10 MW

Expected Online: October 2026

Location: Scurry, Texas

Frequently Asked Questions

How many planned battery storage projects are in ERCOT?: There are 900 planned battery storage projects in ERCOT.
What is the total planned battery storage capacity in ERCOT?: The total planned battery storage capacity in ERCOT is 161,693 MW.
What is the largest planned battery storage project in ERCOT?: The largest planned battery storage project in ERCOT is Zeus Armstrong BESS at 1,043 MW, located in Armstrong, Texas.
How many developers have planned battery storage projects in ERCOT?: There are 125 unique developers with planned battery storage projects in ERCOT.

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