Grid feed solar is a technical and political "simplism" that has doomed genuine and sustainable solar energy advancement for decades ! This fact is well known by the energy establishment that promotes it.  Greed feed solar creates no renewable base load capacity, and encourages no reduction in consumption . On these two points grid feed solar is impotent and useless !  Consumers are not used to the idea of storing energy on site, but ultimatley they will, for it is the future, as energy networks economise and decentralise.  At the PRI of Australia we have developed and proven the mechanism by which this may be accomplished at economic cost. The Automatic Change Over Contactor , ( A.C.O.C ) which dramatically reduces the size of the energy storage unit, ( battery ) and delivers the best of both worlds, stable and continuous solar energy to critical appliances and back up mains supply for refrigeration and other loads in bad weather. If you want to make a real difference DO NOT feed valuable and precious renewable resources into what is nothing more than a common drain, that sidelines any real progress and falls into the hands of those who conspire against us, with their pathetic political mechanisms .