The document discusses the growing energy demands and carbon emissions from India's telecom sector as the number of mobile towers increases dramatically, and proposes a plan to transition 50% of towers to renewable energy by 2015 and completely phase out diesel by 2020, which would save billions of liters of diesel, prevent millions of tons of carbon emissions, and offer a large market potential for renewable energy investment. Greenpeace is calling on telecom companies to publicly commit to this renewable energy roadmap and play a leadership role in advocating for clean energy policies.