Leaders | The solar age

The exponential growth of solar power will change the world

An energy-rich future is within reach

The sun at dawn rising over a solar panel
image: La Boca

It is 70 years since AT&T’s Bell Labs unveiled a new technology for turning sunlight into power. The phone company hoped it could replace the batteries that run equipment in out-of-the-way places. It also realised that powering devices with light alone showed how science could make the future seem wonderful; hence a press event at which sunshine kept a toy Ferris wheel spinning round and round.

Today solar power is long past the toy phase. Panels now occupy an area around half that of Wales, and this year they will provide the world with about 6% of its electricity—which is almost three times as much electrical energy as America consumed back in 1954. Yet this historic growth is only the second-most-remarkable thing about the rise of solar power. The most remarkable is that it is nowhere near over.

The Economist today

Handpicked stories, in your inbox

A daily newsletter with the best of our journalism

More from Leaders

Simple steps to stop people dying from heatwaves

As much of the world roasts, don’t despair


AI will transform the character of warfare

Technology will make war faster and more opaque. It could also prove destabilising


More from Leaders

Simple steps to stop people dying from heatwaves

As much of the world roasts, don’t despair


AI will transform the character of warfare

Technology will make war faster and more opaque. It could also prove destabilising


Emmanuel Macron’s project of reform is at risk

A snap election in France reveals the flimsiness of his legacy

India should liberate its cities and create more states

It doesn’t need more government. It needs more governments

Javier Milei’s next move could make his presidency—or break it

Radical experiments with the currency could spell disaster