India's telecom tower operators turn to renewable fuels
20 August 2012 Last updated at 05:39 BST
In India, thousands of telecom towers across the country help keep mobile phone customers connected.
But with so many communities located in rural or remote areas with little access to electricity, operators rely on fuels like diesel to keep the towers running.
This makes the telecom industry one of India's largest consumers of power.
As the BBC's Shilpa Kannan reports from Delhi, the industry is looking to renewable energy sources, to cut its dependence on diesel fuel and to reduce greenhouse gas emissions.