U.S. Senator Joe Manchin (D-WV) at the U.S. Capitol in Washington
U.S. Senator Joe Manchin (D-WV) holds up a visual aid while speaking to reporters at the U.S. Capitol in Washington, U.S., September 20, 2022. Reuters

U.S. Senator Joe Manchin on Friday warned that bipartisan opposition to his bill to overhaul energy permitting could derail his plan to attach it to temporary spending legislation and pass it by the end of the month.

The West Virginia Democrat will likely need 10 Republicans for the permitting bill he introduced this week, which would speed approvals of fossil fuel projects like natural gas pipelines but also for huge electricity transmission lines needed to bring power from wind and solar farms to cities.

However, getting enough support to include it in the spending bill is an uphill battle, with opposition from Republicans who want a bill more favorable to fossil fuels and progressive Democrats who fear the speeding up of permitting will degrade bedrock environmental laws and harm communities overburdened by pollution.

"By next week we'll either have a permitting process that accelerates and lets us compete on a global basis of how we do things and bring things to market or not and politics get in the way," Manchin said at the Global Clean Energy Action Forum in Pittsburgh.

He said it will take "an awful lot of heavy lifting" over the next two or three days to overcome opposition by "strange bedfellows" ranging from progressive Senator Bernie Sanders to Senate Minority Leader Mitch McConnell.

The permitting reform bill comes as a result of a compromise Manchin made with Senate Majority Leader Chuck Schumer to secure the West Virginian's support for the Inflation Reduction Act, a $430 billion bill seen as the biggest climate package in U.S. history, designed to cut domestic greenhouse gas emissions and lower prescription drug prices.

Manchin, who was interrupted by protesters opposed to the fossil fuel focus of his permitting plan, said that if Congress fails to reform the permitting process, it would jeopardize the clean energy investments the larger bill incentivizes.

"With the Inflation Reduction Act, everything's based on a 10-year window. If it takes seven to eight years or longer to permit something, we are going to miss the window for having those investments come to fruition," he told the conference.

Energy Secretary Jennifer Granholm on Friday said the Biden administration continues to support congressional efforts to reform the energy permitting process.

"We are very excited at DOE about the potential for streamlining permitting on clean energy projects," Granholm told reporters.

She said the permitting deal holds the "greatest promise" for delivering the administration's goal of achieving 100% clean electricity by 2035.

An aide to Schumer on Thursday said that a procedural vote on the government funding bill is expected to take place on Tuesday.

Congress faces a Sept. 30 deadline to pass legislation to approve funding to keep the government operating beyond the current fiscal year.