The group put SolarCity’s market share at around 17.8% the previous year but a spate of acquisitions and new financing options could see the trend continue.
Last year it installed four times more solar than its nearest competitor.
“In addition to a steadily growing market share, the company made a bevvy of moves over the course of the year, ranging from the first securitised distributed solar deal to the acquisitions of Paramount Solar and Zep Solar,” said Shayle Kann, senior vice president, GTM Research.
“SolarCity's 2014 guidance suggests another rapid year of growth, barring bottlenecks in component costs, project finance or regulation,” he added.
In 2014 the company will be able to benefit from bond issues securitised by its distributed solar assets after completing the first deal of this nature in early November 2013.
The top five US Q3 residential solar installers, according to GTM, were:
4 REC Solar
5 Real Goods Solar