PV Generation Potential 17.1 kbtu/ft2/yr 15.4

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1 TOWNHOME PROTOTYPE HIGH PERFORMANCE 60 kbtu/sf/yr 50 kbtu/sf/yr 40 kbtu/sf/yr 30 kbtu/sf/yr 20 kbtu/sf/yr 10 kbtu/sf/yr 0 kbtu/sf/yr 54.4 Baseline 21.8 kbtu/ 2/yr 15 MMBtu 12 MMBtu 9 MMBtu 6 MMBtu 3 MMBtu 0 MMBtu Jan Feb Mar Apr May Jun Jul Aug Sept Oct Nov Dec Hea ng Cooling DHW Ligh ng Equipment Fans/ Pumps 17.1 kbtu/ 2/yr 21.8 High Performance 18.2 PHIUS - IES 4000kWh 3500kWh 3000kWh 2500kWh 2000kWh 1500kWh 1000kWh 500kWh 0kWh PHIUS - WUFI Jan Feb Mar Apr May Jun kwh Generated PV Generation Potential 17.1 kbtu/ft2/yr The high performance prototype was developed by testing improvements on the envelope elements and different mechanical system options. The result is an envelope that is insulated 70% better than the code baseline and is built to a higher construction standard to reduce heat loss, a high-efficiency mini-split mechanical system, and reduced energy use for lighting and plug loads. This building performs 60% better than the baseline, and has a HERS index of 43. Heating loads are dramatically reduced over conventional code construction. The primary energy uses in the building is occupant driven loads lighting and plug loads Jul Aug Sep Oct Nov Dec kwh Demand The chart above shows the annual energy production potential for the townhomes for a roof top photovoltaic array (left), and a comparison of monthly production and demand (right). The blue area on the pie chart shows the annual production relative to total load, which shows that 79% of the annual energy load can be met on site. PROJECT INFORMATION Townhome Prototype 4 Units, 2BR each 12 Residents 16.6 DHW gpd/person@120f 15.9 cfm/person, continuous ventilation Area Floor: 5,124 ft2 Roof: 2,562 ft2 Exterior Wall: 4,957 ft2 Opening: 638 ft2 WWR: 12.9 Surface Area / Volume Ratio: 0.18 Location and Climate Minneapolis, Minnesota Climate Zone 6 HDD: 8217 CDD: 831 SPECIFICATIONS Optimized Equipment Mini-Split Heating COP: 3.3 Cooling COP: % Eff. Heat Recovery Electric Hot Water Heater, 40.0 Gal Storage Lighting Power Density: 0.04 w/ft2 Equipment Power Density: 0.18 w/ft2 Optimized Envelope Roof: R-85 Wall: R-27.2 Glazing: Whole Window U-0.188, SHGC 0.26 Slab: R-17 Infiltration: 1.5 ACH50 Minnesota Sustainable Housing Initiative Multi-Family Housing High Performance Prototypes 2017 Regents of the University of Minnesota, Center For Sustainable Building Research

2 TOWNHOME PROTOTYPE HIGH PERFORMANCE IES VE Modeling Assumptions Massing Building Area: 5,124 ft2 Number of Floors: 2 Floor To Floor Height: 9-3-3/8 Envelope Roof Insulation: R-85 Wall Insulation: R-27.2 Glazing U-Factor: U Glazing SHGC: 0.26 Window to Wall Ratio: Slab Insulation: R-17 Construction Tightness: ACHnat Occupancy Number of Residents: 12 Daily Hot Water Use: 16.6 gallons per day, 120 System HVAC System: Mini-Split System with Heat Pump Cooling Efficiency: 4.0 SSCOP Heating Efficiency: 3.30 SCoP Heat Recovery: 90% Efficient, Thermal Wheel Ventilation Rate (Units): cfm/person, continuous Heating Set Point: 69 Cooling Set Point: 76 Hot Water Heater Efficiency: 95% Internal Loads Lighting Power Density (Units): 0.04 w/ft2 Equipment Power Density (Units): 0.18 w/ft2 Modeling Disclaimer Neither the proposed building performance nor the baseline building performance are predictions of actual energy consumption or costs for the proposed design after construction. Actual experience will differ from these calculations due to variations such as occupancy, building operation and maintenance, weather, energy use not covered by this procedure, changes in energy rates between design of the building and occupancy, and the precision of the calculation tool. Modeled using IES Virtual Environment Energy production assumes a ptiched roof with 50% of the tool roof area dedicated to PV panels. Minnesota Sustainable Housing Initiative Multi-Family Housing High Performance Prototypes 2017 Regents of the University of Minnesota, Center For Sustainable Building Research

3 Fuel Summary Property Weather: Townhome PHIUS WUFI Townhome PHIUS WUFI.blg Organization Building Knowledge, Inc Patrick OMalley Builder HERS Projected Rating 12/27/17 Rater ID: Annual Energy Cost Electric 2542 Annual End-Use Cost Heating 677 Cooling 132 Water Heating 334 Lights & Appliances 1398 Photovoltaics -0 Service Charge 480 Total 3022 Annual End-Use Consumption Heating (kwh) 7424 Cooling (kwh) 1453 Water Heating (kwh) 3651 Lights & Appliances (kwh) Total (kwh) Annual Energy Demands kw Heating 7.8 Cooling 1.5 Water Heating (Winter Peak) 0.7 Water Heating (Summer Peak) 0.5 Lights & Appliances (Winter Peak) 1.2 Lights & Appliances (Summer Peak) 2.9 Total Winter Peak 9.7 Total Summer Peak 4.9 Utility Rates Electricity Xcel Elec $.090 This information does not constitute any warranty of energy cost or savings Noresco, Boulder, Colorado.

4 Property Home Energy Rating Certificate HERS Rating Type: Projected Rating Certified Energy Rater: Patrick OMalley Rating Date: 12/27/17 Rating Number: Registry ID: Projected Rating: Based on Plans - Field Confirmation Required. HERS Index: 34 Efficient Home Comparison: 66% Better General Information Conditioned Area 4880 sq. ft. House Type Multi-family, whole building Conditioned Volume cubic ft. Foundation Slab Bedrooms 8 Mechanical Systems Features Heating: Air-source heat pump, Electric, 3.3 COP. Cooling: Air-source heat pump, Electric, 4.0 COP. Water Heating: Heat pump, Electric, 2.30 EF, 50.0 Gal. Duct Leakage to Outside NA Ventilation System Balanced: HRV, 191 cfm, 54.0 watts. Programmable Thermostat Heat=Yes; Cool=Yes Estimated Annual Energy Cost Use MMBtu Cost Percent Heating 25.2 $674 22% Cooling 4.4 $117 4% Hot Water 12.5 $333 11% Lights/Appliances 52.4 $ % Photovoltaics -0.0 $-0-0% Service Charges $480 16% Total 94.5 $ % Criteria This home meets or exceeds the minimum criteria for the following: 2009 International Energy Conservation Code 2012 International Energy Conservation Code Building Shell Features Ceiling Flat R Slab R-10.0 Edge, R-32.0 Under Sealed Attic NA Exposed Floor NA Vaulted Ceiling NA Window Type U-Value: 0.150, SHGC: Above Grade Walls R-47.0 Infiltration Rate Htg: 0.85 Clg: 0.85 ACH50 Foundation Walls NA Method Blower door test Lights and Appliance Features Percent Interior Lighting Range/Oven Fuel Electric Percent Exterior Lighting Clothes Dryer Fuel Electric Refrigerator (kwh/yr) 550 Clothes Dryer EF 3.01 Dishwasher (kwh/yr) 270 Ceiling Fan (cfm/watt) 0.00 Building Knowledge PO Box 1376 Burnsville MN This information does not constitute any warranty of energy cost or savings Noresco, Boulder, Colorado. The Home Energy Rating Standard Disclosure for this home is available from the rating provider.

5 HERS PERFORMANCE ENERGY RATING CERTIFICATE Projected Rating: Based on Plans - Field Confirmation Required. 34 Estimated Annual Energy Cost Estimated Annual Energy Consumption Heating Cooling Water Heating 1,404 Lights & App Photovoltaics Service Charge 3,008 Total MMBtu/yr Heating 4.0 Cooling 12.0 Water Heating 52.0 Lights & App 0.0 Photovoltaics 94.0 Total Address House Type Multi-family, whole building Cond. Area 4880 sq. ft. Rating No. Issue Date December 28, 2017 Certification Inspected and Tested Annual Estimates* Electric(kWh): C02 emissions(tons): 19 Annual Savings**: $6643 * Based on standard operating conditions ** Based on a HERS 130 Index Home Building Knowledge PO Box 1376 Certified Rater Patrick OMalley Rater ID Registry ID Rating Date 12/27/17 This information does not constitute any warranty of energy cost or savings Noresco, Boulder, Colorado. The Home Energy Rating Standard Disclosure for this home is available from the rating provider.