President Barack Obama and Indian President Narendra Modi signed a pact last week, extending a commitment originally established in 2014, to join forces to combat climate change with a huge commitment to renewable energy.The pledge acknowledges commitments made in Paris last year at the COP21 climate talks and defines a path for both countries to achieve their nationally determined contributions (NDCs). In particular, the U.S. has pledged to support India, the world’s third largest carbon emitting country and second fastest growing economy, in its ambitious goal of deploying 175 gigawatts of renewable energy by 2022. That would bring it up to a level of renewable capacity comparable to the U.S. today.