The watershed summit in 2015 was far from perfect, but its impact so far has been significant and measurable

Ten years on from the historic Paris climate summit, which ended with the world’s first and only global agreement to curb greenhouse gas emissions, it is easy to dwell on its failures. But the successes go less remarked.

Renewable energy smashed records last year, growing by 15% and accounting for more than 90% of all new power generation capacity. Investment in clean energy topped $2tn, outstripping that into fossil fuels by two to one.

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© Photograph: Carlos Barría/Reuters

© Photograph: Carlos Barría/Reuters

© Photograph: Carlos Barría/Reuters

The young plaintiffs, who won a major case over climate change policy in 2023, argue that legislators are illegally ignoring the effects of fossil fuels.

© Janie Osborne for The New York Times

Worries about the US grid’s ability to handle the surge in demand due to data center growth have made headlines repeatedly over the course of 2025. And, early in the year, demand for electricity had surged by nearly 5 percent compared to the year prior, suggesting the grid might truly be facing a data center apocalypse. And that rise in demand had a very unfortunate effect: Coal use rose for the first time since its recent collapse began.

But since the first-quarter data was released, demand has steadily eroded. As of yesterday’s data release by the Energy Information Administration (EIA), which covers the first nine months of 2025, total electricity demand has risen by 2.3 percent. That slowdown means that most of the increased demand could have been met by the astonishing growth of solar power.

Better than feared

If you look over data on the first quarter of 2025, the numbers are pretty grim, with total demand rising by 4.8 percent compared to the same period in the year prior. While solar power continued its remarkable surge, growing by an astonishing 44 percent, it was only able to cover a third of the demand growth. As a result of that and a drop in natural gas usage, coal use grew by 23 percent.

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The International Energy Agency once projected that oil and gas demand could level off by 2030. Now it’s backing off, sort of.

© Alexander Manzyuk/Reuters