Energy efficiency standards—one of the hallmarks of the Obama administration’s climate strategy—likely won’t be pursued as energetically in the Trump administration, stakeholders predict.

The Energy Department has finalized at least 44 new or updated appliance standards since President Barack Obama took office in 2009. They are projected to save consumers a total of $550 billion on energy bills between 2009 and 2030.

Efficiency standards have been a cornerstone of the administration’s Climate Action Plan goal of reducing carbon emissions by 3 billion metric tons by 2030.

President-elect Donald Trump has not accepted the science of climate change. Trump said he...