Residential solar capacity in the US would triple to 41 GW by 2020 , according to Credit Suisse . Its report said only about 3 % of the country ’s rooftops had solar plants compared to the 5 % figure for Australia . Even in the states with the highest levels of rooftop solar , Hawaii and California , just 14 % and 6 % , respectively , of family homes had rooftop solar panels . Credit Suisse said another problem for US rooftop solar was that the country ’s utilities had fought against customer - owned and sited energy suppliers . That had helped cause what the company termed “ significant hiccups ” in US solar .
Residential solar capacity in the US could triple to 41 GW by 2025, according to Credit Suisse. Its report said only about 3% of the country’s rooftops had solar plants compared to the 30% figure for Australia. Even in the states with the highest levels of rooftop solar, Hawaii and California, just 14% and 6%, respectively, of family homes had rooftop solar panels. Credit Suisse said one problem for US rooftop solar was that the country’s utilities had fought against customer-owned and sited energy plants. That had helped cause what the company called “significant hiccups” in US solar.