https://www.engadget.com/2016-09-11-california-pc-energy-sta...
https://www.sandiegouniontribune.com/sdut-computer-efficienc...
https://www.digitaltrends.com/computing/cec-energy-efficienc...
I haven't found a lot of information about this, but it appears that this is about idle power draw in electronics. I've been seeing a few things say that they they aren't California Title 20 compliant (like lightbulbs).
https://www.energy.ca.gov/rules-and-regulations/appliance-ef...