E.ON claims that the 440MW devices would provide a total of 1,320MW of power, or enough electricity for a million British homes.
Meanwhile, E.ON and RWE have created a joint venture to outbid rival groups for land at Olbury in Gloucestershire and Wylfa on Anglesey both of which are earmarked as locations for Britain's next generation nuclear power plants.
Commenting on the partnership, Mr Miliband said: "The successful outcome of this site auction is yet more evidence of major energy players gearing up for investment in low-carbon energy in the UK."
He added that the total declared plans for new nuclear plants take the total output to 12.4GW more than the capacity offered by the UK's existing stations.
Click here to run an energy price comparison, and see if you could be paying less for your gas and electricity.