BOSTON — More than a month since House and Senate Democrats failed to compromise on clean energy reforms that the industry and many advocates agree are essential to the transition the state wants to make, key trades associations have urged lawmakers to get the job done this year even if it means finding “a creative way.”

The letter sent Wednesday to Senate President Karen Spilka, House Speaker Ronald Mariano and other lawmakers emphasized that passing siting and permitting reforms in particular is critical for the future of the state’s clean energy infrastructure and economy, but it also pressed lawmakers to set additional policy.

“Now is the time to seize the momentum and remove the pernicious and counterproductive barriers to getting much-needed clean energy infrastructure in the ground to serve our economy. At stake is millions of dollars of federal funding that Massachusetts will fail to utilize if energy projects take as long to construct as they have in the past,” the letter said.

It was signed by Advanced Energy United, Coalition for Community Solar Access, Solar Energy Industries Association, Northeast Clean Energy Council, and the Solar Energy Business Association of New England.

The House and Senate each passed legislation taking aim at the complicated process to approve clean energy projects and incorporating reforms meant to modernize the electric grid to accommodate more energy from cleaner sources. Both also loaded their bills with their own policy priorities.

The House included a push to have the state procure greater amounts of clean energy generation, but lead House negotiator Rep. Jeffrey Roy said last month the “best course of action” would be to narrow the bill only to include the siting and permitting reforms.

That’s a non-starter for lead Senate negotiator Sen. Michael Barrett, who has for years argued that it is critical for the state to offset the higher costs of electrification so ratepayers don’t rebel against the broader clean energy transition. The Senate bill included a focus on ramping down natural gas programs as a way to shield Bay Staters from electric bill increases.

The House and Senate bills each drew opposition from Republican lawmakers, so it would be at least more complicated for bill supporters to try to pass a compromise bill during informal sessions, when an objection from a single lawmaker can prevent a bill from advancing.

“While we recognize that passing legislation at this time will require an extraordinary measure, Massachusetts cannot afford to let this moment pass us by,” the trade group letter said. “In addition to permitting and siting, we encourage you to consider other proposals from the Senate and House where agreement can be reached so that we maximize the value of such an endeavor.”