For the balance of the primary power demand in watt per person and the greenhouse gas issues the city of Zurich and the Federal Office for energy have concluded the development of a methodical guide. The bases correspond to the methodology of the 2000-watt society. Besides, the methodology paper contains primary energy factors according to the ecoinvent data bank. With the help of the primary energy factors the final energy on the primary energy and the CO2 issues linked with it can be converted. The guide considers the relations of the city of Zurich. Adaptations are necessary for an application in other context.
You find the methodology paper here.