ERCOT Increasingly Meets Rising Demand with Solar, Wind, & Batteries - CleanTechnica

Since 2021, electricity demand on the Texas grid managed by ERCOT has steadily increased, reaching record highs in the first nine months of 2025 with 372 terawatthours (TWh) consumed—a 5% rise from 2024 and 23% higher than in 2021. Wind and solar power, particularly utility-scale solar, have been the fastest-growing sources of electricity since 2023, collectively meeting 36% of ERCOT’s demand in early 2025. Utility-scale solar generation surged to 45 TWh in this period, a 50% increase from 2024 and nearly four times the 11 TWh produced in 2021. Wind generation also grew, totaling 87 TWh, up 4% from 2024 and 36% since 2021. Natural gas remains ERCOT’s largest electricity source but has plateaued since 2023, providing 158 TWh in early 2025, down slightly from