** Shares of solar company Sunrun RUN.O up 4.3% at $18.03 premarket

** Jefferies upgrades rating on Sunrun to "buy" from "hold" on expectation of increasing cash generation in 2026

** Raises price target to $21 from $11, largely driven by higher growth outlook on solar and battery

** The new price target represents a 21.4% upside to the stock's last close

** Jefferies says RUN can grow, by taking advantage of migrating from cash and loan sales to Power Purchase Agreement and lease contracts

** "We think RUN is best positioned to benefit, likely growing in the high single digits to teens range in 2026, while the broader resi-solar market braces for a 20-30% year-over-year decline in contrast"- Jefferies

** 14 of 26 brokerages rate the stock "buy" or higher, 11 "hold" and 1 "sell"; median PT is $16, according to data compiled by LSEG

** Up to last close, stock up about 87% YTD

(Reporting by Dharna Bafna in Bengaluru)

((Dharna.bafna@thomsonreuters.com))