Thanks for the comment and I actually totally agree with your point. Having a limit at all should be unnecessary really but may be required politically.

If the UK had a useful simple and effect tariff system such as in Germany things would be much simpler.

Why shouldn’t people be able to sell their excess micro generated power back to the National Grid at the consumer price and make money?

It is actually very difficult - probably impossible - to match the large power company consumer price when using a fossil fuel to generate power. So we are not going to see people hooking their diesel generators up to the National Grid and making money. Only people using so called renewable power sources such as wind or hydro power will actually be able to profit from such a scheme - and if that reduces our national carbon footprint, we would all benefit.

Thanks for the comment and the link. I can’t believe they would be really worried about building supersized microgeneration, but as you say the 10kWp limit may be more realistic.