** Shares of solar company Sunrun RUN.O rise 14.4% to $8.46

** Company reported Q1 total revenue of $504.27 million late on Wednesday vs est. of $484.06 million - data compiled by LSEG

** RUN posted Q1 net income of $50 million compared with a net loss of $87.8 million last year

** Company also said that customer additions with storage grew 46% in Q1 compared to the prior year

** RUN sees tariff outlook to be "manageable"

** "It is a dynamic environment for tax policy and tariffs...we are controlling what we can and are ready to adapt to changes that may occur..." - CEO Mary Powell

** "Despite the strong quarter, we remain cautious on '26+ as the company sidestepped questions on specific safe harbor $(SH)$ plans in case of accelerated tax credit phase-out," said Jefferies analyst Julien Dumoulin-Smith

** Including sessions moves, stock down 17% YTD

(Reporting by Pooja Menon in Bengaluru)

((Pooja.Menon@thomsonreuters.com;))