Question

_________uses geothermal power and pledged to be fossil fuel-free by the year 2050. The Japan Russia Iceland

Answer 1

The country that has been using a lot of geothermal power and pledged to be fossil fuel-free in 34 years is Japan. With their high level of technological advancement, they should be easily able to switch from burning fossil fuels to sources which aren't so wasteful. 

Answer 2

JAPAN uses geothermal power and pledged to be fossil fuel-free by the year 2050

Currently there are 6 Geothermal Power stations in Japan and they plan to keep increasing the amount until it enough to generate power for the whole country, and Japan's former prime minister, Shinzo Abe, encourage other countries to do the same