Really though, a breakthrough would open up a whole lot of new tech and energy options.

It seems likely then that at least some of the renewable energy options will be pursued over the next few years.

In terms of available energy options which may help to address these problems:

Why make taxpayers subsidize development of a costly energy option?

That makes it an attractive energy option as concern grows over the effects of air pollution on human health and the environment.

Their design may not conveniently allow other heat sources, including certain renewable energy options.

Citizens' organizations supporting nuclear power as a key clean energy option.

The only energy option left was to fell trees.

No clean renewable energy options should be dismissed yet.

But another energy option is coming into focus: local production.