Home builders will be able to guarantee heating and cooling bills as a way of marketing new high-efficiency homes to home buyers under a program approved Tuesday by the N.C. Utilities Commission.
The program pushes new efficiency boundaries by enticing customers with guaranteed savings as opposed to a mere promise. As part of the guarantee, customers who get utility bills that exceed the guarantee will qualify for reimbursements.
Under the program, Progress Energy will pay the home builders up to $4,000 per home for meeting the strictest efficiency standards. Qualifying homes will have to be significantly more efficient than homes with the federal Energy Star rating.
It's not clear when Raleigh-based Progress will begin offering the program to home builders, and when the builders will begin offering billing guarantees to their customers.


The state's 2007 energy law is a work in progress that requires resolving a number of thorny issues, such as whether chipped whole trees qualify as a renewable fuel source.