One third of Indian homes are not connected to the power grid and demand for mobile phones is growing rapidly.
A pilot scheme in west India has been set up by mobile firms and industry body the GSMA development fund.
"It is about connecting the unconnected," said Dawn Hartley, development fund manager at the GSMA.
Mobile phone use has exploded across India. In 2003 there were just 13 million mobile phone subscribers. Today, there are nearly 130 million.
Much of this take-up has been in urban areas where there is a comprehensive mobile network.
But outside the major towns, where approximately three-quarters of India's 1.2 billion people live, mobile coverage is fragmented.
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