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Energy Dome 19MW CO2 Battery Project with SRP in Arizona

Sector: Geothermal • Location: Phoenix metropolitan area, Arizona, United States

Source: Energy-Storage.News

Project
Under Construction

Energy Dome is building a 19MW, 10-hour duration CO2 Battery (190MWh) in Arizona, US, co-located with Salt River Project's thermal generation plant. The project won a 20-year tolling contract with SRP through a 2024 RFP for non-inverter-based long-duration energy storage (LDES). Google is funding a portion of the costs and evaluating operational performance.

Status
Under Construction
Sector
Geothermal, Energy Storage, Commercial
Location
Phoenix metropolitan area, Arizona, United States of America
Updated
22 Jul 2026
Source
Energy-Storage.News

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Project Information

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The project “Energy Dome 19MW CO2 Battery Project with SRP in Arizona” is an infrastructure initiative in the Geothermal sector, located in Phoenix metropolitan area, Arizona, United States. Taiyo aggregates data on it from Energy-Storage.News.

Participants

Not available for this record.

Status

Original status

under construction

Taiyo status

Under Construction

Taiyo last update

2026-07-22

Contact

Not available for this record.

Description

Description

Energy Dome is building a 19MW, 10-hour duration CO2 Battery (190MWh) in Arizona, US, co-located with Salt River Project's thermal generation plant. The project won a 20-year tolling contract with SRP through a 2024 RFP for non-inverter-based long-duration energy storage (LDES). Google is funding a portion of the costs and evaluating operational performance.

Original sector

Energy Storage

Location

Country

United States of America (USA)

State

Arizona

City

Phoenix metropolitan area

Source

Source

Energy-Storage.News

URL

More Details

Record type

Project

Sector

Geothermal, Energy Storage, Commercial

Article published date

2026-07-18

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