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Home My WebLink About2020/10/06 Presentation item 9 Existing Home Energy 1, 2020 th October 6CouncilChula Vista City Conservation SectionOffice of Sustainability Development Department of Economic OrdinanceSustainability Overview implemented similar measuresExemptions for low income and homeowners who have already •A part of existing project review and inspection by staff •additional potential energy savings Flexibility provided through measure selection with information about •and utility billsOlder residential buildings have the biggest opportunity to reduce GHG •Implementation item of 2017 Climate Action Plan•2 Background 3 address commercial buildingsBenchmarking ordinance being created will homesmultifamily&familysingle of13%RetrofitMetric:Performancetime.in existing buildings at a specific point in Require energy‐savings retrofits -Strategy 3 Policy Overview 4 portion of the homemajor remodels to also perform energy efficiency upgrades in existing that are performing additions or before 2006 Require homes built • Updates Allow for energy efficiency measure selection 5 Updates up to 60%cost reduced byEstimated compliance 42005 or older 9191431978 or olderAll zip codes except 9191422005 to 1979All zip codes except 9191402006 or newerAll CityMeasuresEfficiency Was BuiltYear Home Location 6 Updates www.chulavistaca.gov/departments/clean/retrofitWebsite:7 homeowners. income -exemption added for low–income exemption -Low Policy Flexibility 8 equivalent usage-site photovoltaics in place offsetting at least 95% of the annual electricity and gas-Home has on•Home achieves a Department of Energy (DOE) Home Energy Score (HES) of at least 8 out of 10•greater energy savings than the prescriptive packages. An alternative, voluntary, set of energy measures is concurrently being completed that will achieve equivalent of •-Participation in low•Similar measures have already been completed•efficient. Includes exemptions where: Allow flexibility for homes to take more effective paths to efficiency or for homes that are already Policy Flexibility 9•Medically necessary improvements•Projects exempt if consisting solely of:circumstancescharacteristics of home or other special effective due to unique -infeasible or not be costPrescribed measures would be technically •Unique Homes Policy Overview 10 away from your home and minimize the need for cooling on hot summer days.Cool roofs help save energy by increasing the amount of solar energy that get reflected Cool Roofyour energy bills and outside pollutants to enter your home. decade earlier. This means the air you paid to heat or cool can escape and increases Houses built over the past five years are over 20 percent tighter than those built a Air Sealingquality concerns to enter your rooms. destination. Additionally, leaky ducts can allow a pathway for dust or other indoor air 30% of the air you are paying to heat or cool is being lost before it reaches its Duct leakage can be as high as 30% in average California homes. This means that up to Duct SealingAttic insulation helps your home maintain a stable temperature. Attic Insulationon its way to you. insulating the tank and exposed piping you can minimize the amount of heat that is lost Water heating can account for up to 50% of an average home’s natural gas usage, PackageWater Heating LED lights can use up to 75% less energy than incandescent bulbsLED LightingBenefitMeasureEnergy Efficiency Policy Overview New Potential Credits:11 sealed and installed and filters are regularly changed. high efficiency units can prevent higher bills. It is also important to ensure ducting is When running, air conditioners can be the biggest energy user in a home so installing ReplacementAir Conditioner periods. water heaters store their hot water, they can minimize energy usage during peak while tankless units are 8% to 34% more efficient. Additionally, because heat pump heaters are on average 200% to 300% more efficient than traditional water heaters About 18% of average homes energy is used for heating water. Heat Pump Water ReplacementWater Heater reduce the ability of moisture and noise to enter your home. Energy efficiency windows not only reduce heating and cooling costs they can also WindowsBenefitMeasureEnergy Efficiency Policy Overview 12 Water Heating Package 2)LED Lighting1)2005-1978Air Sealing5)Duct Sealing4)R38 Attic Insulation3)Water Heating Package 2)LED Lighting1)Duct Sealing4)R38 Attic Insulation3)Water Heating Package 2)LED Lighting1)1978-PreClimate Zone 10 (91914)Climate Zone 7Year Built age and climate zoneeffective upgrade measures based on home -Recommended cost• Support Resources 13 Rebates •Energy Marketplace•Energy Saving Assistance Program•SDG&E•Home Energy Score •Go Green Financing•MAAC Weatherization• Benefits of the Ordinance 14 covered homes to voluntarily make retrofits -Combined with outreach to encourage non$559,000 per year in 2030 and more than $1 million per year in 2040Utility Cost Savings •3,200 metric tons-GHG Reductions •will affect over 10 years,that the ordinance 3,800 units If all recommended energy measures are installed in the estimated Next Steps 15 1/10/21 Effective Date (30 days following CEC approval)12/10/20(expected)File with California Building Standards Commission 12/10/20 Receive CEC Response (expected)10/7/20 Submit California Energy Commission (CEC) Application 10/20/20 City Council (second reading)10/6/20 Present to City Council (first reading)DateTask / Milestone Conclusion similar measuresExemptions for low income and homeowners who have already implemented •A part of existing project review and inspection by staff •additional potential energy savings Flexibility provided through measure selection with information about •utility billsOlder Residential buildings have the biggest opportunity to reduce GHG and •Implementation item of 2017 Climate Action Plan•16 THANK YOU 17 cdowns@chulavistaca.gov2442-(619) 476Conservation SpecialistCory Downs moon-Ban Ki–and grandchildren.” world we’re proud to leave our children “Together we can build a world we want, a 18 Slides from March Presentation Background 19 sale)”ofpointat(nottimeinpointspecificaatbuildingsexistinginretrofitssavings‐energy“RequireClimate Change Working Group Recommendation Background 20 homesmultifamily&familysingle of13%RetrofitMetric:PerformanceUpgradesEfficiencyEnergy-3.3 Objectivewww.cvclimatechallenge.comChallengeChula Vista Climate Action •EvaluationFree Resource & Energy Business o Ups-Home Energy & Water Check o cost evaluations-Residential and commercial no•Go Green o Financing •Other Objective Actionswill address commercial buildingsBenchmarking ordinance being created Background 21 wide study created by utilities for local governments-State Policy Overview 22 Average home expected to save approximately $170 per year in utility costs•Upgrades estimated to payback within 7.9 to 10.7 years with an average of 8.3•Required measures are cost effective:does not exceed 20%from among the required measures which applicants can propose a more limited set cost without those measures, permit this policy exceeds 20% of the overall project energy efficiency measures required under -Project Value Cutoff •If unique considerations are found: Energy Efficiency Measures 23 by all homesMandatory measure required Required in Homes: waste heat, average bulbs last 25 times longer Reduces energy use up to 70%, reduces Benefits: exempt if not compatible with LED bulbsrecommend Energy Star bulbs. Historic fixtures Not applicable to lights plugged into outlets, Notes: Halogen lamps with LED bulbs incandescent, CFL and screw‐in Replace Measure: 1) Lighting Energy Efficiency Measures 24 with water efficiency measures insulated. Historic fixtures exempt if not compatible Only accessible hot water pipes need to be Notes: bathroom faucetsfor gpmfor showerheads and kitchen faucets, and 1.2 ) gpmto maximum flow rates of 1.8 gallons per minute (Upgrade sink and shower fittings -C. Low Flow Fixtures water pipes hot all accessibleInsulate -B. Hot Water Pipe Insulation (required on water heaters made after April 2015) 16 insulation -storage water heaters without existing RInsulate exterior of -A. Water Heater Blanket Measure: 2) Water Heating Package Energy Efficiency Measures 25 Approximately 47% of expected applications –all homes in Climate Zone 10 (zip code 91914) Required in Homes: reduces heating and cooling energy use and costsHelps home maintain stable temperature and Benefits: exempt. Homes without vented attics are exempt.19 in Climate Zone 10 are -Climate Zone 7 or greater than R5 in -Homes with existing insulation greater than RNotes: 38-spaces to meet RAdd attic insulation in buildings with vented attic Measure: 3) Attic Insulation Energy Efficiency Measures 26 Approximately 47% of expected applications –and all homes in Climate Zone 10 (zip code 91914) 1978 homes in Climate Zone 7 -PreRequired in Homes: distribution, increases indoor air qualityReduces energy lost from heating and cooling air Benefits: Require photo of contractor gauge for compliance. Notes: system airflowreducing duct leakage to be equal to or less than 15% of Air seal all accessible ductwork with a goal of Measure: 4) Duct Sealing Energy Efficiency Measures 27 Approximately 14% of expected applications –91914) Only Climate Zone 10 (zip code Required in Homes: used to heat or cool homesIncreases home comfort and reduces energy Benefits: performed after air sealing. have a BPI Combustion Appliance Safety Inspection with one or more vented combustion appliances MUST Only accessible areas need to be sealed. Homes Notes: accessible areas of the buildingApply air sealing practices throughout all Measure: 5) Air Sealing Energy Efficiency Measures 28 indoor air safety combustion appliance ventilation and therefore If homes are sealed too tight it can impact •conditionsventilation even under worst case scenario Ensures proper combustion appliance •appliance that vents to the homeOnly required where a home has a combustion •Only required when home does air sealing•BPI Combustion Appliance Safety Inspection Energy Efficiency Measures 29 homes in Climate Zone 10 (zip code 91914) . Pre 1978 homes in Climate Zone 7 and all re‐roofingincludes Only applicable if project Required in Homes: used for coolingReduces home heat gain and reduces energy Benefits: already covered)Only for steep slope roofs (shallow slope roofs Notes: 0.75 or higher reflectance of 0.25 or higher and thermal emittance of Roof Rating Council (CRRC) with an aged solar Install a roofing product rated by the Cool Measure: 6) Cool Roof Policy Flexibility 30 equivalent usage-electricity and gassite photovoltaics in place offsetting at least 95% of the annual -Home has on•least 8 out of 10Home achieves a Department of Energy (DOE) Home Energy Score (HES) of at •achieve equivalent of greater energy savings than the prescriptive packages. An alternative, voluntary, set of energy measures is concurrently being completed that will •-Participation in low•Similar measures have already been completed•that are already efficient. Includes exemptions where: Allow flexibility for homes to take more effective paths to efficiency or for homes Policy Flexibility 31•Medically necessary improvements•Projects exempt if consisting solely of:circumstancescharacteristics of home or other special effective due to unique -infeasible or not be costPrescribed measures would be technically •Unique Homes State Requirements 32 HVAC or Water Heating (DHW) equipment) that is regulated by the federal government (e.g., May not specifically require high efficiency equipment •Must be cost effective•more stringent than state requirementsust be M-Resulting in buildings using less energy •Filed with the State, and accessible to public•homes minimally effected.Pre 2006 –Updated for each new Title 24 cycle •Compliant with all state laws•Local Energy Code Requirements Policy Overview 33 14%43%2005-1978NA 33%1978-PreClimate Zone 10Climate Zone 7Year Built remodelrequired to comply with current building code as a result of the addition or otherwise notPrescribed upgrades will apply to the remainder of the home •Prescribed upgrade measures depend on home age and climate zone•