Energy minister CharlesHendry said the installation rules were "tough" because fitters would not be allowed to try to sell consumers more services during installation.
Meanwhile his ministerial colleague CharlesHendry said the energy watchdog Ofgem had announced that variable tariffs offered by energy providers must meet certain conditions to offer "greater clarity for consumers".
And within DECC, Mr Davey's position must be weakened in some way by the advent of a minister with views very different from the previous incumbent, CharlesHendry, who was massively popular with the renewables industry.