Many years ago, I wrote extensively on this web site/blog about the many intricacies and complexities of what I call "solar offset" charging of an electric vehicle vs. directly filling up with electricity that has been/is being produced directly by a (home rooftop) solar system connected to the same electrical box into which an EV charger and/or the wall-socket into which you're plugging your EV into.
We recently had two solar systems installed here at Highline Crossing Cohousing in Littleton, Colo.
About 10 years ago, in June of 2010, my ex-wife and I became the first homeowners in our Aurora, Colo. neighborhood to install a rooftop solar system on our single family home.
The cohousing community that I live in -- Highline Crossing Cohousing -- here in Littleton, Colo. is FINALLY getting solar after a one-year wait for the installation and, prior to that, 18 months of me, and several other residents here in this community, working toward persuading our community to add a 20 kW solar system.
As you may have heard, starting in 2020, California will require that all new single-family homes include a solar power system. (At present, about one in five new homes has solar added when built.) This will help California meet its ambitious goals regarding greenhouse gas emissions, and will continue California's leadership in home energy efficiency.