Batteries will last longer if they are not discharged more than about 20% of their capacity. Deep discharging should be rare. This implies that a battery bank is properly sized if it is about five times the daily load.
A Small Off-Grid PV System
Control and Monitoring
This shows how much SJ is paying per kwh for electricity right now. Rate changes hourly.
"For years, everyone thought Noah was paranoid & crazy ... until it started raining ..."