Now in Mexico you can feed the utility grid during the day while your solar panels are generating and use the grid´s energy during the night at no cost to you; so you can forget having a battery bank in your home to store the energy of your solar panels (unless your house is far away from the C.F.E. grid). It is possible for consumers in Baja California to generate their own electricity thru solar panels and feed the surplus to C.F.E. (Comision Federal de Electricidad, the ut