The natural gas industry pulled off an 11th-hour victory in its campaign to strip climate-friendly rules out of the latest update to the homebuilding guidelines used in most of the United States.

Houses and commercial buildings constructed to this years standards were supposed to include the circuitry for hooking up electric appliances or car chargers, potentially adding a few thousand dollars to a new homes asking price but saving homeowners tens of thousands in renovation costs to rewire existing walls and even more on utility bills.

As the International Code Council the private nonprofit that convenes local governments, lobbyists and industry professionals together every three years to update the energy codes finalized this years codebook last fall, trade associations representing gas utilities and furnace manufacturers filed formal appeals to strip out the pro-electrification measures.

The ICCs appeals board rejected all the challenges earlier this month and urged the organizations board of directors to do the same.

On Wednesday night, the ICCs board of directors took the unusual step of going against its own experts to side with the fossil fuel companies, scrapping key codes meant to make electric cars, solar panels, induction stoves and heat pumps more affordable.

Instead, almost every code the trade groups challenged will now be relegated to the optional appendix section of the codebook, essentially eliminating the chances of widespread adoption across the country.

Rather than hasten the pace of energy-savings as the country races to cut emissions and shrink rising utility bills, the ruling, which is final, means the 2024 codes will represent far more modest gains in efficiency than the previous 2021 codes, which were widely hailed at the time as a victory in the fight against climate-changing emissions.

It marks a setback for U.S. efforts to speed up the deployment of electric heating and vehicles and increases the number of buildings that will ultimately require costly retrofits to meet modern energy standards.

Really bad and surprising news, Mike Waite, the director of codes at watchdog American Council for an Energy-Efficient Economy and a volunteer who helped author this years commercial building codes, wrote in an email to HuffPost. The ICC Board went against their consensus committees, appeals board and staff.

The surprise decision to overturn the appeals boards ruling comes after the ICC violated its own internal policies to give the industry groups extra time to file appeals. Advocates, who called the move a scandal, were relieved when the appeals board delivered what seemed like a final verdict. The board of directors has typically followed the appeals boards recommendations.

Last week, a trio of high-ranking House Democrats sent a letter to the ICC warning it against slashing the contested codes.

The ICC said final hearing would be broadcast for the public over YouTube from its website. The video did not appear at the designated location on the ICCs website Monday, and as of Wednesday night, the organizations official YouTube page showed no uploads featuring the March 18 hearing. A spokesperson for the ICC did not respond to multiple emails requesting comment Monday, Tuesday or Wednesday.

Openness, transparency, and consensus are cornerstones of the code and standards development process, said Patrick Hughes, a senior vice president at the National Electrical Manufacturers Association, which represents makers of electrical equipment and has supported the greener codes. This decision flies in the face of those principles and is a stark example of how a select few can overturn the desire of many.

The American Gas Association cheered the ICC ruling as yet another victory for the industry against efforts to curb the use of natural gas, which emits potent heat-trapping pollution.

The ICC Board of Directors made the right decision for the United States to be more energy efficient in removing these deeply problematic provisions from the code base, American Gas Association CEO Karen Harbert said in an email forwarded to HuffPost.

The Air Conditioning, Heating and Refrigeration Institute (AHRI), which had also filed appeals, said the state laws Republican legislators have passed across half the country in recent years to limit municipalities power to quit natural gas would have made the greener codes difficult to enact. The group, which represents furnace manufacturers, applauded the decision.

Stephen Yurek, AHRI CEO, said in an emailed statement: If provisions in the [energy codes] increase the likelihood of legal action because of preemption issues or reduce the likelihood that certain states and localities will adopt it, less overall energy will be saved.

While the U.S. does not have federally mandated building codes, virtually every state uses the ICCs codes as a guideline.

In some big states, like Illinois, local law requires regulators to adopt the latest and greenest codes automatically. States like Idaho havent meaningfully updated their codes in over a decade and even want to prevent cities and towns from exceeding the low statewide standards.