Nonprofit consumer and environmental groups as well as 11 states sued the Department of Energy (DOE) today for failing to enact energy efficiency standards (PDF) promulgated by the Obama administration. The standards apply to portable air conditioners, uninterruptible power supplies, air compressors, walk-in coolers and freezers, and commercial packaged boilers.

The debacle began back in April when New York Attorney General Eric Schneiderman and officials from 10 other states demanded that newly-confirmed Energy Secretary Rick Perry enact energy efficiency rules for ceiling fans. Those rules were finalized in the last days of the Obama Administration and were set to take effect March 20, 2017. Perry delayed the date that the ceiling-fan rules were to take effect and looked set to delay or ignore five other energy efficiency rules for the air conditioner and power-supply group as well. Those efficiency standards were set to be published after the ceiling-fan rules were published, on March 15, 2017.

Schneiderman and the other attorneys general filed an appellate court petition asking for intervention in the ceiling-fan matter. The state prosecutors then sent a notice of an intent to sue the DOE if it didn’t enact the second group of energy efficiency rules within 60 days.

Earlier this month, the DOE confirmed that the ceiling-fan rules would go into effect in September 2017 without further delay, but the department hasn’t moved on the other five energy efficiency standards. So the Natural Resources Defense Council (NRDC) and Earthjustice, along with the 11 states, sued Perry today, hoping to compel the DOE to publish and enact those five finalized rules.

The five energy efficiency rules went through a lengthy rule-making process. They were estimated to save US owners of the appliances a collective $11 to 12 billion on their electricity bills as well as stop the creation of millions of tons of air pollution.

In a statement, Timothy Ballo, an attorney for Earthjustice, said “It’s not clear whether the Trump administration is refusing to publish these rules because of ideological hostility to cost-saving regulations that benefit the environment or whether they simply cannot get their act together to publish documents that have already been approved and signed.”

In an e-mailed response to Ars’ request for comment, a spokesperson at the DOE said the department does not comment on pending litigation.