ERCOT: Texas Grid
The Electric Reliability Council of Texas. Tracking reliability, load growth, and market design changes.
About ERCOT
ERCOT manages the Texas Interconnection, an island grid isolated from the rest of North America. Serving about 26 million customers across most of Texas, it operates an energy-only market without a capacity mechanism, though the new Performance Credit Mechanism is changing that. Its independence from federal FERC jurisdiction, rapid renewable buildout, and extreme weather exposure make it a closely watched case in grid policy.
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Grid Reliability & Extreme Weather
Winter Storm Uri aftermath. Summer peak alerts and conservation calls. Reserve margin adequacy and generation weatherization requirements.
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Interconnection Queue
ERCOT has received 175 GW of data center interconnection requests alone — though the grid operator expects only ~24 GW to be built by 2031. The EIA forecasts 14% demand growth for ERCOT in 2026. ERCOT's May 2025 CDR report projected a 94,159 MW summer 2026 peak, with a potential 6.2% shortfall in severe weather scenarios.
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Data Center & AI Load
Texas has 80.6 GW of new gas capacity under development with 40 GW specifically earmarked for data centers. The state's $14B PUCT-approved grid expansion (including three 765-kV lines) faces a 48,000-member Hill Country opposition coalition and a fracturing Texas Republican caucus. Texas data centers consume 25 billion gallons of water per year — projected to hit 161 billion gallons by 2030.
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Market Design
Performance Credit Mechanism (PCM). Ancillary services reform. Intraday pricing dynamics and negative price events.
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Renewable Integration
Texas leads the nation in wind generation. Solar growing fast. Curtailment challenges and negative pricing during high-output hours.
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Legislation & PUCT
Market reform legislation. PUCT rulemaking and commissioner appointments. State energy policy direction.