A group of scientists and energy analysts has laid out a path under which New York State could, in theory, eliminate its use of fossil fuels and nuclear power — including for transportation — by 2050. The graph above charts the contributions played by improved efficiency and adoption of renewable electricity sources as well as hydrogen fuel cells (with the hydrogen generated with renewable energy).
In particular, note this:
Rapid expansion of micro WWS [wind, water, sunlight] generation and associated decentralized infrastructure: rooftop solar, micro-wind, V2G, smart grids. These are mainly upgrades and additions to infrastructure, rather than replacement. And again, the correct evaluation basis is full social cost-benefit analysis over the entire physical lifetime, at near-zero discount rate.