"In the past two years, without much notice, solar power has begun to truly transform the world’s energy system."
"People have been telling stories about renewable energy since the nineteen-seventies, when the first all-solar-powered house opened on the campus of the University of Delaware, drawing a hundred thousand visitors in 1973, its first year, to marvel at its early photovoltaic panels and its solar hot-water system, complete with salt tubs in the basement to store heat overnight. But, even though we’ve got used to seeing solar panels and wind turbines across the landscape in the intervening fifty years, we continue to think of what they produce as “alternative energy,” a supplement to the fossil-fuelled power that has run Western economies for more than two centuries. In the past two years, however, with surprisingly little notice, renewable energy has suddenly become the obvious, mainstream, cost-efficient choice around the world. Against all the big bad things happening on the planet (and despite all the best efforts of the Republican-led Congress in recent weeks), this is a very big and hopeful thing, which a short catalogue of recent numbers demonstrates:
It took from the invention of the photovoltaic solar cell, in 1954, until 2022 for the world to install a terawatt of solar power; the second terawatt came just two years later, and the third will arrive either later this year or early next.
That’s because people are now putting up a gigawatt’s worth of solar panels, the rough equivalent of the power generated by one coal-fired plant, every fifteen hours. Solar power is now growing faster than any power source in history, and it is closely followed by wind power—which is really another form of energy from the sun, since it is differential heating of the earth that produces the wind that turns the turbines.
Last year, ninety-six per cent of the global demand for new electricity was met by renewables, and in the United States ninety-three per cent of new generating capacity came from solar, wind, and an ever-increasing variety of batteries to store that power."
Bill McKibben reports for the New Yorker July 9, 2025.
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