Electric costs $0.105/kWh on average here, and YES I do care about it. After property taxes, and insurance expenses, the power bill is the next most expensive annualized expense. It's the largest expense I have direct control over. If my PV system knocks ~$50/mo off my electric bills, then that is $50/mo I have to spend on something else, like acquiring another piece of property where the summers are not 95°F and 90% humidity every day... If I wasn't here running the WH, and other appliances, the PV system would basically operate my A/C for free.