We were talking specifically about the electricity production, not the total energy production. So you are changing the topic. But they are related topics. First of all, you must not make the mistake to compare the termal energy used in transportation and (to a lesser part) for heating with the electrical energy produced. An electric car uses less than a third of thermal energy consumed by a combustion engined car. Heat pumps are way more efficient than any thermal heaters. To convert all cars to electric in Germany, the electricity production would have to be increased by a mere 15%. To get rid of all fossile energy is of course a larger step, something we have to work at.