The US Congress' passage Thursday of the Trump-endorsed fiscal megabill, dubbed the "One Big Beautiful Bill Act," will significantly change the country's landmark clean energy tax provisions, with mixed outcomes for oil and gas companies involved in more than just producing hydrocarbons. Those advancing carbon capture and storage (CCS) are by far the biggest winners, while blue hydrogen advocates fared better than green (electrolytic) peers. Those venturing into sustainable aviation fuel (SAF) and lithium still have big sweeteners. But firms keen on developing renewable electricity will see US policy headwinds gaining force. Oil and gas lobbying groups have focused applause around key — and more universally industry-applicable — wins such as the repeal of higher royalty rates, establishing minimum oil and gas leasing, delayed fees on methane emissions, and renewed favorable tax treatment for so-called intangible drilling costs. But their appeals to House members to pass the 900-page bill ignored blemishes elsewhere.