Needham rates Sunrun stock a buy, sees nearly 70% gain amid industry growth, battery push

Tim McKibben, left, and Aaron Newsom install Sunrun solar panels on the roof of a home in Granada Hills, California.
Mel Melcon | Los Angeles Times | Getty Images

Residential solar stock Sunrun should still be a long-term winner for investors even with its recent struggles, according to investment firm Needham.