In 2011, the three utilities collectively secured 20.6% of the electricity sold to retail customers from solar, wind, geothermal and other renewable powergeneration.
Its calculations do demonstrate that powergeneration projects that use solar panels and geothermal technologies will be cheap enough to start to replace coal by 2030.
Although Japanese firms are leaders in green technologies such as wind, solar and geothermal, these sources account for only 1% of all powergeneration.