Wind and solar power together generated 10.3% of the world’s electricity in 2021, crossing double digits for the first time in history. That’s a remarkable leap considering these two sources were barely a blip on the global grid just twenty years ago. Fifty countries now pull more than 10% of their power from wind and sun, with Denmark leading the pack at 52%. Even China, the world’s largest electricity market, quietly joined the 10% club that same year. The milestone matters because it shows the clean energy transition isn’t a far-off hope but a measurable, accelerating shift — one that, if its current pace holds, could keep the power sector aligned with the 1.5°C climate goal.