PG&E has a new program called ClimateSmart for its customers in order to offset a home’s carbon footprint. Although I believe becoming carbon neutral is a good idea in general, I would not select PG&E for this effort.
Their program is tax deductible and based upon your home’s energy use per month. $0.00254 per kilowatt-hour for electricity and $0.06528 per therm for natural gas. I like the automatic feature but in the past I had recommended ClimateCare in this post.
The best solution is to use less energy and eat less meat.