Quote from
http://www.bre.co.uk/filelibrary/pdf/rpt...dition.pdf
A key safety consideration is that the PV system will disconnect when the distribution system is not energised. This is to prevent the hazardous situation of the photovoltaic system feeding the network or local distribution system during a planned or unscheduled loss of mains. Such an event is termed
‘islanding’ and presents a potential danger to those working on the network/distribution system.
What this means in reality is if the national grid fails, the PV system is locked out from pushing power BACK into the national grid. Where does that power go? NOWHERE.
All that money and you get precisely nothing. So sorry, should have read the small print.
http://www.naturalnews.com/036194_solar_..._grid.html
Unless you have a proper stand alone pv-battery-inverter system NOT tied into national grid, you're basically stuffed. Big smiles for all you who DIY'd yourself a system.