The article discusses the long-awaited release of rules by the U.S. Treasury Department for claiming federal clean hydrogen tax credits. These tax credits are part of the 45V tax credit included in the 2022 climate law to encourage the production of clean hydrogen. The rules prioritize tax credits for hydrogen produced using solar and wind power. However, some benefits will also be granted to hydrogen produced from fossil fuels if carbon capture technologies are incorporated. Despite the focus on renewable sources, both oil industry leaders and Republican lawmakers support the hydrogen tax credits. It is expected that President-elect Trump will continue these incentives, possibly with adjustments that could further benefit fossil fuels. The article also mentions the estimated cost of the Inflation Reduction Act's tax credits to be around $656 billion but with potential net benefits of up to $2.7 trillion over the next decade. The piece further provides additional clean energy news, including President Biden's ban on new federal drilling leases, the expansion of U.S. clean energy manufacturing, urban decarbonization efforts in major cities, and challenges within the oil and gas industry related to environmental damage and liability. It also touches on improvements in electric vehicle technology, challenges in the U.S. power grid's transmission infrastructure, and the cost-benefit analysis of the Inflation Reduction Act's tax credits.