BUZZ-US power companies rebound after previous session's AI-linked slide

** Shares of U.S. power and equipment companies rise premarket following a selloff in artificial intelligence-linked stocks on Monday

** U.S. power, utility, and natural gas companies saw significant drops on Monday, as new AI technology from Chinese startup DeepSeek raised doubts about future U.S. electricity demand and tech spending

** However, global energy shares recovered some poise on Tuesday, with independent power provider Constellation Energy CEG.O, whose shares had shot up about 100% in 2024, rising 4.5%

** Vistra VST.N rises 5.3% and rival Talen Energy Corp TLN.O advances 3.3%

** GE Vernova GEV.N, which last week reported growing demand for its gas turbines and grid equipment and services, gains 3.2%

** Sam Altman-backed nuclear startup Oklo Inc OKLO.N up 5.1%

** Smaller companies NuScale Power SMR.N up 5.23% and Nano Nuclear Energy NNE.O rises 7.7%