I posted a photograph of this display at the RSPB nature reserve at Leighton Moss on 9 January 2014. At that point it said 14306kWh generated so they have generated 578 kWh in five months.
I posted an electricity meter reading from about that time in a post on 20 May 2014. Here is a new electricity meter reading. My house has used 836 kWh in 5 months.
So the solar panels would supply maybe two-thirds of my domestic needs. But note the power of 0.19kW. That isn't high enough for most of appliances in my house. The system will only power these devices by solar panels pooling their output into the National Grid and the us using power from the grid.
