*Carbon credit prices (from Cap and Trade) exchange reflect degree of innovation. California as an example.
*Rise in alternative fuels?
*Measures of energy production over time by source?
==Programs to Explore==
===Initiatives by Tech Giants===
*Apple Plans Nevada Solar Farm in Clean Energy Push: https://www.entrepreneur.com/article/227271
*Tesla buys Solarcity for $2b: https://www.tesla.com/blog/tesla-and-solarcity
*Google runs 100% on clean energy in 2017: https://blog.google/topics/environment/100-percent-renewable-energy/
**Question: Do Google build clean energy cogen plants next to their data centers?
===Government Labs===