BUZZ-Power companies slide amid broad pullback in AI-linked stocks

** Shares of electric utility companies, which are expected to see a surge in demand from power-hungry data centers needed to develop AI technology, tumble premarket

** Chinese startup DeepSeek rolled out a free AI model that it says uses lower-cost chips and less data, wobbling investors' faith in the profitability of AI

** Nuclear power companies Constellation Energy CEG.O and Vistra VST.N fall ~11% each

** World's largest renewable power company NextEra Energy NEE.N drops 7.3%

** GE Vernova GEV.N, which last week reported growing demand for its gas turbines and grid equipment and services, drops 12.1%

** Sam Altman-backed nuclear startup Oklo Inc OKLO.N falls 12.6%; smaller companies NuScale Power SMR.N down 13.1% and Nano Nuclear Energy NNE.O down 11.5%