But sticking to current government policies will result in it falling far short of this potential, with renewable energy on track to reach only 10% of the US energy mix by the end of the next decade rather than 27%, Irena warns in its report Renewable Energy Prospects: United States of America.

"As the second largest energy consumer in the world, the US must continue to play a leading role in the global transition to a sustainable energy future," says Irena director-general Adnan Amin.