All over social media, spam, everywhere. What happened was the U.S. and state governments started offering tax incentives, so a bunch of middlemen (scammers) popped up to take a portion of that benefit while marketing it to regular folk. It's a whole cottage industry (barf):
https://www.thisoldhouse.com/solar-alternative-energy/review...
https://www.cnet.com/home/energy-and-utilities/solar-panel-s...