His comments come after a 2.4-2.6GW cap on annual wind and solar additions, coupled with a rapid degression in feed-in tariffs, have led to a collapse of the once-buoyant German solar market to under 1.9GW last year, down from more than 7GW in each year of the 2010 to 2012 period.

Solar energy groups have demanded a higher cap and mechanisms to raise support again at times when new installations fall below the government-set target.

“I