I learned about this great service through GasDoc - once you connect with your utility, you are sent notifications when your electricity is coming from dirty power sources. If you reduce your usage, you get paid (I'm at just over $6 in a day). California prefers to pay residents to reduce energy use, instead of paying a power plant to produce more energy. You can learn more/sign up by using my link. Or use GasDoc's link if he posts below (you get a $5 credit, we get a $5 credit). Or wiztechy's link. Or ddimit's link. ohmc.co/bonnieno Added bonus, I set it up to reduce automatically by linking my Nest thermostat. (I'm not willing to link it to my Tesla account...ymmv.) And I love seeing where my energy is coming from, when not running solar. About 45% is coming from geothermal and wind. The rest is natural gas (boo). Great incentive to lower energy use. WHERE'S MY POWERWALL????