"And Jesus knew their thoughts, and said unto them, Every kindgom divided against itself is brought to desolation; and every city or house divided against itself shall not stand."

An autonomous or hybrid photovoltaic system not connected to a grid.

It may, or may not, have storage; but most stand-alone systems require batteries or some other form of storage.

Technique for mounting a photovoltaic array on a sloped roof, which involves mounting the modules a short distance above the pitched roof and tilting them to the optimum angle.