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Preliminary 2025 facility recordOperating

Houston, TX · EIA plant 66338

Callisto I Energy Center

Callisto I Energy Center is a storage power facility in Houston, TX, with 223 MW of operating capacity.

Open on mapView TX profileOpen EIA source
Operating capacity223 MW1 operating generators
Proposed capacity0 MW0 proposed generators
UtilityCallisto I Energy CenterEIA-reported operator
Balancing authorityERCOElectric Reliability Council of Texas, Inc.

Capacity profile

Fuel and technology

Nameplate capacity
Operating
Storage223 MW
ProposedNo proposed capacity reported
Reported technologiesBatteries

Nearby in TX

Related facilities

TX · 0.1 miFriendswood Energy122 MW →TX · 0.1 miCallisto II Energy Center200 MW →TX · 0.1 miPamela Heights I Energy Center100 MW →TX · 0.1 miHO Clarke Generating484 MW →

Source quality

Preliminary facility data

This page uses the EIA-860 2025 Early Release. EIA identifies the release as preliminary, so it should not be used for official state or national aggregation. Capacity is nameplate capacity, not real-time output or annual generation.

Read methodologyEIA-860 source