** Power equipment maker Generac GNRC.N shares rise nearly 10.5% to $240 premarket
** Co raises FY sales growth forecast after reporting better-than-expected Q1 earnings, helped by solid demand for backup generators and a growing backlog from data center customers
** GNRC now expects 2026 net sales growth in the mid-to-high teens percent range, up from its prior forecast of mid-teens range
** Reports Q1 adjusted profit per share of $1.80, above analysts' estimates of $1.33 - data compiled by LSEG
** Posts Q1 revenue of $1.06 billion, slightly above estimates of $1.05 billion
** As of last close, GNRC up 59.2% YTD
(Reporting by Megavarshini G. Somasundaram in Bengaluru)
((Megavarshini.SomasundaramGnanasundari@thomsonreuters.com))