UPINGTON, South Africa (AP) — Deep in South Africa’s Northern Cape province, south of the Kalahari Desert, a beaming light towers above dozens of solar mirror panels.

The mirrors tilt to varying degrees throughout the day, tracking the sunrays and projecting them onto a tower. The tower houses a receiver that absorbs intense heat, boils water and produces high-pressure steam. This is then converted into 50 megawatts of electricity — enough to power over 40,000 households for 24 hours.

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