The US installed about 18GW of new solar and wind capacity in 2017, according to figures from leading industry groups, with PV installations down an unprecedented 30% due to poor performances in the two largest market segments – utility-scale projects and residential rooftop systems.

The US added 10.6GW of new solar capacity in 2017 in what was a “transitional year”, down from its record-smashing 15.1GW