Oil futures saw gains in a short week driven by expectations of Chinese stimulus to boost its economy. Biden's plan to ban drilling in some coastal waters could pose challenges for the incoming administration. New hydrogen rules from the Treasury Department resulted in stock jumps for Plug Power and Bloom Energy. Some nuclear power plants may benefit from eased hydrogen tax-credit rules. U.S. crude oil inventories fell less than anticipated, impacting the market. Green-energy firms are highlighting their projects' power capacity rather than just their cleanliness. Russian gas to Europe was halted as Ukraine did not renew a pipeline deal, with limited impact due to diversified energy sources. Puerto Rico faced a massive power outage affecting over a million people on New Year's Eve with ongoing efforts for restoration.