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Preliminary 2025 facility recordOperating

San Marcos, TX · EIA plant 55144

Hays Energy Project

Hays Energy Project is a oil & gas power facility in San Marcos, TX, with 989 MW of operating capacity.

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Operating capacity989 MW4 operating generators
Proposed capacity0 MW0 proposed generators
UtilityHays Energy, LLCEIA-reported operator
Balancing authorityERCOElectric Reliability Council of Texas, Inc.

Capacity profile

Fuel and technology

Nameplate capacity
Operating
Oil & gas989 MW
ProposedNo proposed capacity reported
Reported technologiesNatural Gas Fired Combined Cycle

Nearby in TX

Related facilities

TX · 3.6 miMesquite Creek LFGTE Project3 MW →TX · 8.9 miCachi200 MW →TX · 10.3 miDunlap TP 14 MW →TX · 12.7 miTimmerman Power Plant180 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