>… the most cost effective solar systems will supply about 75-80% of your average monthly demand I am not so sure that is true. Seemingly a large percentage of

>… the most cost effective solar systems will supply about 75-80% of your average monthly demand I am not so sure that is true. Seemingly a large percentage of new installation costs are fixed (paperwork, labor, inverters, etc) with only a smaller portion for the panels themselves. For a minor incremental cost, you can fully provision your house.