Colorado and New Jersey join the top 10 states in ACEEE ranking of policies and programs to advance energy efficiency.

A state audit found that the California Public Utilities Commision has failed to make sure energy efficiency program dollars ...

“The benefits of energy efficiency programs may not be worth their cost to ratepayers,” State Auditor Grant Parks wrote in a ...

A coalition of state agencies, manufacturers, utilities and others unveiled a blueprint aimed to accelerate adoption, while a ...

Energy efficiency investments in states recently rebounded to a record yearly high of $8.8 billion, according to a new report ...

But some programs are still underway in several states, including one that gives homeowners thousands of dollars off a new ...