I believe in fusion power - the free, abundant fusion power coming from the sun, which strikes the face of the Earth every day with as much energy as it is stored in our entire coal and uranium reserves. Photovoltaics are increasing at an astounding pace with costs falling on the same speed. In less than a decade, it could be the cheapest energy available even somewhere as cloudy and northerly as Germany and Finland.
Of course... lower demand in turn would mean the price of fossil fuels fall accordingly as long as it is technologically feasible to retrieve it. Which is why I was somewhat pessimistic when I mentioned before that India is going to burn most of their coal regardless. The Gondwana coal field is almost as easily available as the coal fields of England and France in the eighteenth century. Ditto for whatever's left of conventional natural gas.