My partner is co-founder of a company named EcoTrove, whose goal is to replace your utility bills with a fixed-price, clean energy subscription up to 10% cheaper.
The service is currently only available to PG&E customers – if you’re interested, check it out! They basically calculate what the best rate plan is given your electricity consumption profile, and switch it automatically. Customers can change it twice a year, but they seldom do. This is all the more important that the optimal rates also optimize the greenliness of your consumption.