In partnership with DTE Energy, Michigan IPL investigated the efficacy of energy efficiency measures for houses of worship (HoWs). The project was designed to help HoWs, literally, keep their lights on. While the data analysis is still be completed, our preliminary findings suggest that our average participant saved around $2,500 a year on their energy bill.
We had a 48 total congregations participate in our program. Each participant received an energy assessment, direct install of low cost efficiency materials such as programmable thermostats, CFLs, door sweeps, caulk, etc., and an EPA Portfolio Manager utilities tracking account.
Data recording spanned three years. 18 months of previous bill data was collected and entered into the tracking accounts to create a baseline at the beginning of the program. Also, at the beginning of the program, the efficiency materials were installed. The HoW’s energy usage was tracked for another twenty-four months and compared to the first year’s baseline data.
We were very pleased with the preliminary success of the pilot. Our participants saved an average of 11% on energy during the study period. They also saved an average of $2,500 during the study.