I'm in Southern California. On a south facing exposure we get a MINIMUM of 6 hours of full sun. Whole house solar out here runs roughly $36k for the Tesla 30 year systems (installed), so it could be pretty economical.
I've also looked into other grid minimizing options like wind turbine (especially given the flow created by the output heat) and water turbines in the greywater reclamation system.
RE: How to mine Burst coin completely off of solar - Part 2