Missed a key point.
You also need to look at geography and what green options work in your area.
You may live between 2 hills and large pine forests as I do and cannot use a wind turbine because you cannot get permits for a 60 + foot tower.
Or you may live near Seattle and average between 50 and 80 days of sun a year, which makes solar irrelevant.
Going green is not a one size fits all solution for everywhere. You have to work with what Mother Nature gives you.