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TCAAP Energy Integration Resiliency Framework <br />Energy Source Implementation <br /> <br /> <br /> 52 <br />Financial Assumptions <br />Energy and Demand Rates Escalation Rates <br />Summer Residential Electricity Rate <br />($/kWh)1 $ 0.0867 Inflation Rate 2.0% <br />Winter Residential Electricity Rate <br />($/kWh)1 $ 0.0739 Natural Gas Rate Acceleration <br />(EERC Real)2 3.93% <br />Electric Service Charge per Unit <br />Annually1 $ 96.00 Electricity Rate Acceleration3 2.53% <br />Sales Tax4 $ 0.0763 Water and Sewage Acceleration 3.00% <br />Natural Gas Rate ($/MMBtu)1 $ 8.3983 Cost of Capital - Developer 6% <br />Natural Gas Service Charge per Unit <br />Annual5 $ 108.00 Cost of Capital – District Energy <br />Entity 4% <br /> Payment Periods 30 <br /> <br />Equipment Efficiency Unit Costs <br />Air Conditioning (SEER5) 14.00 Housing Units 394 <br />Air Conditioning (EER6) 11.76 High-Efficiency Furnace Unit Cost <br />with Install $ 2,550 <br />Air Conditioning COP7 3.45 Natural Gas Water Heater Cost with <br />Install $ 1,500 <br />Air Conditioning kW/ton 1.02 Air Conditioner Unit Cost with <br />Install $ 2,880 <br />High Efficiency Furnace8 92% Operation and Maintenance <br />Annually per Unit $ 400 <br />Heat Pump Cooling EER9 20.30 Heat Pump Unit Cost with Install10 $ 6,500 <br />Heat Pump Heating COP11 4.10 Hot Water Heater with Heat <br />Pump12 $ 1,250 <br /> Heat Pump Maintenance Per Unit <br />Annually $150 <br /> <br />Expected Unit Life Expectancy <br />High-Efficiency Furnace 18-20 Years <br />Air Conditioner 12-15 Years <br />Heat Pump 18-20 Years <br /> <br />Franchise Fees/Easements $0 <br />Notes: <br />1. http://www.xcelenergy.com/staticfiles/xe/Regulatory/Regulatory%20PDFs/rates/MN/MNResRateCard.pdf <br />2. Energy Escalation Rate Calculator - 2% inflation, start date is 2015, duration is 30 years. Annual energy escalation rate is <br />1.89% (Real) and 3.93% (Nominal).