Texas has significantly increased its clean energy output, with recent data indicating it is outpacing California in the sheer volume of clean power generated. This development has drawn attention to the differing regulatory environments in the two states, with some observers attributing Texas's rapid growth to less stringent building regulations.
According to data from LSEG, the Electric Reliability Council of Texas (ERCOT) system, which covers most of the state, generated 6.4 million megawatt-hours (MWh) of clean power during January to August 2025. This represents a 14% increase from the same period in 2024 and marks a new record for the state. In contrast, the California Independent System Operator (CAISO) generated 3.8 million MWh of clean power during the same period, a 4% increase from the previous year.
The robust growth in Texas's clean energy sector comes despite the state not having specific "pro-climate policies" as highlighted by author Ramez Naam. Naam stated in a recent tweet, "> Everyone who cares about climate should understand this. Texas, with no pro-climate policies, has blown passed California in clean energy. In large part because Texas has less red tape and makes it easier to build." This perspective suggests that a streamlined regulatory process, rather than explicit climate mandates, has been a key driver.
Indeed, Texas has established a reputation for a lightly-regulated state energy permitting system, which appears to facilitate the rapid deployment of renewable projects. In 2025, Texas surpassed California to become the national leader in utility-scale solar generation, producing 58,634 gigawatt-hours compared to California's 53,713 gigawatt-hours, according to the U.S. Energy Information Administration (EIA). Texas also maintains its lead in wind power output nationwide.
While California's CAISO system boasts a higher percentage of its grid powered by clean sources, reaching 74% from January to August 2025, its overall clean energy generation volume is currently lower than Texas's. California, which has ambitious goals for 60% renewable power by 2030 and 100% zero-carbon by 2045, faces challenges in accelerating infrastructure development due to resistance against streamlining environmental protection acts. Both states, however, continue to lead the nation in new installations of solar and battery storage capacity.
