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estimate for all equipment across <br />35 years, furnaces 15 – 25 years, <br />Carbon offsets are purchased in <br />and commercial NG appliances <br />sectors. It assumes boilers 20 – <br />Average lifespan of residential the residential and commercial <br />1% annual average population <br />emission factor and fossil fuel <br />EWEB’s utility-specific GHG <br />very low-GHG and fossil fuel <br />other appliances 5 – 15 years. use per kilowatt hour remains <br />D <br />1:1 ratio equal to community <br />water heaters 10 – 15 years, <br />ATTACHMENT <br />Action takes effect in 2020 <br />is 25 years. This is a rough <br />100% EWEB electricity is <br />substituted for natural gas <br />growth rate, 2020 - 2030 <br />GHGs from NG <br />use <br />to determine mitigation potential. The <br /> of <br />adjusted to account for substitution of <br />multiplied by 11 years (2020 – 2030) <br />use are assumed to be replaced every <br />complexity. See Action 1 for a sense <br />Not modeled due to lack of data and <br />Eugene’s NG GHGS and fossil fuel <br />residential and commercial sectors; <br />natural gas mitigation protection is <br />th <br />year. That fraction of emissions is <br />therefore appliances equal to 1/25 <br />Average NG appliance life is <br />assumed to be 25years in the <br />of scale proxy. <br />electricity. <br />that do for increase in <br />Model if there are no <br />Run assessment that offset (as the cost of <br />new NG appliances, <br />service, what would <br />year and an average <br />CO2 emissions per <br />requires a ‘Cost of <br />carbon’ fee for all <br />based on average <br />carbon proxy).installing new <br />incentives for <br />customers. <br />2019 <br />28, <br />gas fueled appliances. <br />January <br />installation of natural <br />installing natural gas <br />Energy Program. <br />Prohibit financial <br />NWNG’s Smart <br />Updated <br />incentives for <br />purchase and <br />Regulate the <br />service. <br />Chart: <br />NWNG <br />34 <br /> <br />