Every night, the rural areas of the states of Uttar Pradesh and Bihar in India plunge into complete darkness. In the last week of January, David Ferris (cleantech journalist for New York Times and Forbes) and myself undertook a gruelling road trip across these two states. We saw only darkness in the districts we visited until we came to the capital city of Uttar Pradesh, Lucknow, brilliantly decked up in the lights of the tri-colour to celebrate the 64th Republic Day.