Governments keep saying that many forms of renewable energy are just too expensive to carry out, yet they spend billions on projects that are harmful to the environment - wanting new airports, railways, fracking, etc. It seems that if anything that damages the environment, but has the potential for economic growth or making the country a global power, then it is perfectly acceptable to spend as much as they like on it. Anything that is purely for the environment isn't worth it.
Projects for renewable energy are expensive, but in comparison, are they really too expensive?
The cost of the environmental damage is far beyond the cost of bringing in more renewable energy. In my opinion, expense is just an excuse for politicians who would rather be focussing on Capitalist goals.