Inside India’s humongous solar plant

Kamuthi, in India’s Tamil Nadu, is one of the world’s largest solar power plants. BBC Click's David Reid discovers its stunning scale – as well as some unusual cleaning robots.

For a plant as big as Kamuthi, occasional cloud cover is less of a problem 

See the scale of Kamuthi – covering 10 sq km or 2,500 acres – as well as the design of the panels up close.

Rotating cleaning robots roam over the panels in hypnotic movements

Learn why the rotating robots were installed.

Kamuthi’s 2.5 million photovoltaic panels produce 648 megawatts (MW) of power, supplying an estimated 750,000 people

The Indian government aims to build eight times the country’s current solar capacity in five years – it may be India’s fastest growing business