US installed solar capacity was 55,900 megawatts at the end of the first quarter 2018.
GTM Research expects 2018 installations to remain flat: roughly 10,800 megawatts compared to 10,600 megawatts in 2017.
Some developers who failed to take tariffs into account in their bids to supply electricity are expected either to cancel projects or delay them to buy time to renegotiate power contracts or to wait out scheduled tariff reductions.
Fifty-five percent of new generating capacity added in the US during the first quarter this year was solar. Solar led other generating sources for a second quarter in a row, according to the Solar Energy Industries Association.