One of your readers, Professor Jack Ponton, claimed last weekend that solar power was not "added up ".
Our Solar Trade Association believes that it is misleading to say that all electricity generated by domestic solar systems should be valued at a wholesale price of 4 p per unit (or kWh).
Most of the electricity will be used in the House, otherwise the House will have to buy electricity from the grid for 15 p per unit.
That's why solar homeowners save hundreds of pounds a year on their bills.
Why do we encourage homeowners to consume as much solar energy as possible.
Domestic battery storage systems have only just begun in the UK.