Case Studies

Case study poster describing a DOE Zero Energy Ready Home 2022 Housing Innovation Award winning custom spec home in the cold climate that used R-22 ICF walls, an ICF insulated basement, and an R-50 cellulose attic insulation to achieve a HERS score of 49 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2022 Housing Innovation Award winning custom-for-buyer home in the cold climate that used 2x6 24-in. o.c. walls, R-38 blown fiberglass in attic, an insulated basement, triple-pane windows, and 9.75 kW of solar panels to achieve a HERS score...

Case study poster describing a DOE Zero Energy Ready Home 2022 Housing Innovation Award winning attached home in the cold climate that used panelized wall construction with 2x6 24-in. o.c. walls, aerosolized acrylic sealant, and R-60 blown fiberglass in attic to achieve a HERS score of 50 without PV...

Case study poster describing a DOE Zero Energy Ready Home 2022 Housing Innovation Award winning affordable home in the cold climate that used 2x6 24-in. o.c. walls, an R-60 vented attic, a ductless mini-split with transfer fans over bedroom doors, and triple-pane windows to achieve a HERS score of...

Case study poster describing a DOE Zero Energy Ready Home 2022 Housing Innovation Award winning custom spec home in the cold climate that used 2x6 24-inch on-center walls, R-50 fiberglass in the attic, an unvented crawlspace, and 4.125 kW of solar PV to achieve a HERS 26 with PV and 47 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2022 Housing Innovation Award winning production home in the cold climate that used R-39 double walls, R-50 fiberglass in attic, 9.88 kW of solar panels, and 10 kW of battery storage to achieve a HERS score of 9 with PV and 42 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2022 Housing Innovation Award winning custom-for-buyer home in the cold climate that used 2x4 16-in. o.c. walls, R-50 fiberglass in attic, R-10 rigid polyiso on basement walls, and aerosolized acrylic sealant to achieve a HERS score of 35...

Case study poster describing a DOE Zero Energy Ready Home 2022 Housing Innovation Award winning custom-for-buyer home in the cold climate that used R-53 double walls, R-70 cellulose in attic, triple-pane windows, 25 kW of solar panels, and a mini-split heat pump for a HERS score of 31 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2022 Housing Innovation Award winning custom-for-buyer home in the cold climate that used R-22 ICF walls, a spray-foamed attic and slab, triple-pane windows, and 13.74 kW solar PV roof shingles to score HERS -13 with PV or 26 without PV.

Case study describing a DOE Zero Energy Ready Home 2022 Housing Innovation Award winning attached home in the cold climate that achieved a HERS 50 without PV.

Case study describing a DOE Zero Energy Ready Home 2022 Housing Innovation Award winning production home in the cold climate that achieved a HERS 9 with PV or HERS 42 without PV.

Case study describing a DOE Zero Energy Ready Home 2022 Housing Innovation Award winning custom for buyer home in the cold climate that achieved a HERS 35 without PV.

Case Study describing a DOE Zero Energy Ready Home 2022 Housing Innovation Award winning custom for buyer home in the cold climate that achieved a HERS -13 with PV or HERS 26 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2024 Housing Innovation Award winning custom home in the cold climate that achieved an ERI of 47 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2024 Housing Innovation Award winning custom home in the very cold climate that achieved an ERI of 36 without PV.

Description: Case study poster describing a DOE Zero Energy Ready Home 2024 Housing Innovation Award winning custom home in the cold climate that achieved an ERI of 30 without PV and an ERI of -20 with PV.

Description: Case study poster describing a DOE Zero Energy Ready Home 2024 Housing Innovation Award winning production home in the cold climate that achieved an ERI of 50 without PV and an ERI of 39 with PV.

Case study poster describing a DOE Zero Energy Ready Home 2024 Housing Innovation Award winning custom home in the cold climate that achieved an ERI of 43 without PV and an ERI of -2 with PV.

Case study poster describing a DOE Zero Energy Ready Home 2024 Housing Innovation Award winning custom home in the cold climate that achieved an ERI of 33 without PV and an ERI of 10 with PV.

Case study poster describing a DOE Zero Energy Ready Home 2024 Housing Innovation Award winning production home in the cold climate that achieved an ERI of 41 without PV and an ERI of -1 with PV.

Case study describing approaches to comprehensive retrofits that are in reach of the ordinary builder.

Case study describing a retrofit project in the cold and very-cold climate zones.

Case study describing a cost-effectively reducing energy use by over 50% in an existing home.

Case study describing an energy efficient renovation in the cold climate.

Case study describing a retrofit project in the cold and very-cold climate zones.

Case study describing a new home construction project in the cold climate.

Case study describing Pulte Homes and their pursuit of the DOE builders challenge, building more than 780 homes that comply to or exceed the energy standards required.

Case study describing Tindall Homes and the energy efficient features they took advantage of when building 20 luxury homes, that subsequently used 40% less energy then code requirements.

Case study describing the family-run Treasure Homes that achieved a HERS rating of 46 without PV on its prototype “Gem” home, located on the blustery shores of Lake Michigan in northern Indiana.

Case study describing 50% energy saving projects for new multifamily homes in cold climates.

Case study describing the design and testing of 10 high-performance homes in Farmington, Connecticut.

Case study describing a new construction building project of 20 luxury homes in northern New Jersey that were more energy efficient than ENERGY STAR and met the 50% energy savings requirements of the federal tax credit for new homes.

Case study describing the origins and operation of a Kalamazoo-based home performance contractor.

Case study describing the growth and performance of a Rochester-based home energy performance company that increased revenues by nearly 2000% in 1 year.