A top energy efficiency lobby is searching for new allies in the Republican Party after several friendly faces lost their reelection bids this year.

Many centrist champions of energy efficiency legislation in the GOP were defeated in primaries or the general election, dealing a blow to the bipartisan clout of The Alliance to Save Energy.

“I think there’s always a bit of consternation [about turnover],” said Rob Mosher, the group’s legislative director.

Among the Republican supporters of the group headed for the exits are Sen. Richard Lugar (Ind.) and Reps. Brian Bilbray (Calif.), Dan Lungren (Calif.), Charlie Bass (N.H.) and Nan Hayworth (N.Y.).

Mosher identified several Republicans who sponsored energy efficiency bills this Congress who could take ownership over the issue. Reps. David McKinley (W. Va.), Mike Fitzpatrick (Pa.), Richard Hanna (N.Y.) and Chris Gibson (N.Y.) all have demonstrated interest in the topic, he said.