“This capacity could be reproduced using conventional natural gas fired electrical generation for ~$31 billion or ~1/16 of the costs expended.” Analysis: Solar & wind power costs are huge compared to natural gas fired generation | Watts Up With That?

In summary, the figures show that these three major nations of the Western world have spent about ~$0.5trillion to create Renewable Energy electrical generation capacity nominally amounting to ~5.8% of their total generation. This capacity could be reproduced using conventional natural gas fired electrical generation for ~$31 billion or ~1/16 of the costs expended.

via Analysis: Solar & wind power costs are huge compared to natural gas fired generation | Watts Up With That?.