Prince George’s County is trying to help residents insulate their homes to lower their energy bills, but has had fewer applicants than expected for a program that could give homeowners up to $6,500 to retrofit their residences.

Here are the details of the program, which is funded by the U.S. Department of Energy.

Residents can get an energy audit from the county and then receive funds to make improvements in insulation. All homes must be structurally sound before any energy conservation measures can be installed. The county gives special priority to elderly homeowners and families whose income is no more than 60 percent of the state median income, which means a family of four can make approximately $58,000 and still be eligible.

For more information or to schedule a home energy audit, call 301-883-5491. You also can download an application from the county housing department’s Web site.