Are you really suggesting the government shouldn't be subsidizing new things that make the world a better place when they do not provide immediate profit motive?
Grants and assistance/seed money for scientific research grant foundations, military research projects, space exploration, other pure research/science projects, sure.
Artificially distorting/masking the cost efficiency of one existing service/product versus a 'favored' new service/product through taxes and regulation that cannot otherwise compete only wastes the people's money with artificially-inflated prices (and in the case of energy prices is extremely regressive...it hurts the poorest and most vulnerable in society the fastest and the worst) and actually slows the advancement of the 'favored' service/product by mitigating the financial/economic pressure to improve.
Increases in electricity and heating fuel prices can be measured in human lives lost. How many lives a year every year is it worth to increase energy prices artificially for political/ideological agendas?
The only ones that come out ahead in the end with these schemes are the politicians and their private sector 'connected' cronies. Society and everyone in it pays the costs in lives lost, unnecessary suffering, and the slowing of human progress.