California now runs two-thirds of its giant economy on clean energy
California clean energy reached a landmark milestone in 2023, with 67% of the state’s retail electricity coming from renewable and zero-carbon sources — making it the largest economy on Earth to hit that mark. The shift was driven by decades of binding renewable energy policy, a massive buildout of solar capacity, and a battery storage fleet that grew from under 500 megawatts to over 15,000 megawatts in just five years. California’s GDP grew 78% since 2000 while emissions fell 20%, directly challenging the claim that climate action hurts economic growth. The road to 100% by 2045 remains difficult, but this milestone proves large-scale clean energy transition is already happening.







