The Senate Legislative Oversight Committee on Monday will look into why.
The program is designed to help residents save on energy costs through the installation of insulation and stopping heat loss through leaky windows and doors.
The Community Affairs Department uses government and nonprofit agencies to do the work. DCA Commissioner Lori Grifa is scheduled to testify at the hearing.
According to a report released by State Auditor Stephen Eells, the program's cost controls weren't being effectively implemented.
The report noted that the lack of oversight resulted in varying construction costs, underpaid workers and "unreasonable spending."