Hydropower has been the backbone of energy supply in Uttarakhand, which is endowed with several rivers and mountains. State-owned generation utility, Uttarakhand Jal Vidyut Nigam Limited (UJVNL) is the leading company responsible for tapping the huge hydropower potential, of over 18 GW, in the state. As the state nodal agency for the development of small-hydro power (SHP) plants.

With an installed renewable energy capacity of over 7,420 MW, Tamil Nadu occupies the top slot amongst all states in the sector. Wind power capacity, which accounts for more than 90 per cent of the state's installed capacity, has been the anchor of its renewable energy installations.

The launch of the Jawaharlal Nehru National Solar Mission (JNNSM) in 2009 catapulted the Indian solar market into the global league. The mission's target of 20,000 MW by 2022 is among the biggest solar goals announced worldwide.