Building Energy Efficiency Standards

Transcription

1 WISE/CEC Building Forum Energy Building Energy Efficiency Presented by: Michael Shewmaker, CEA May 18 th, 2019

2 Authority & Process Public Resources Code (PRC 25402): Reduction of wasteful, uneconomic, inefficient, or unnecessary consumption of energy (a)(1) Prescribe, by regulation, lighting, insulation, climate control system, and other building design and construction standards that increase the efficiency in the use of energy and water for new residential and new nonresidential buildings. Warren Alquist Act Signed into law in 1974 by Governor Ronald Reagan and launched by Governor Jerry Brown in

3 Policy Drivers For Building Governor's Clean Energy Jobs Plan Governor Brown s ZNE goals focused on ZNE building code requirement by 2020 for newly constructed residential buildings get there in 3 code cycles (2013,, 2019) Zero Net Energy: Residential by 2020 and Nonresidential by 2030 CARB Climate Change Scoping Plan California Long Term Energy Efficiency Strategic Plan 3

4 California Energy Commission Responsibilities Forecasting: Forecasts future energy needs and maintains historical energy data Permitting: Permits thermal power plants 50 MW or larger R&D: Administers research and development programs, advancing science and technology in energy related fields Energy Efficiency: Promotes energy efficiency by settling the state s appliance and building standards (Title 20 & 24) Renewable Energy: Supports the development of renewables through certification of facilities and verification of generation Contingency Planning: Plans for and directs the State s response to energy emergencies Transportation: Supports deployment of alternative and renewable fuel sources IEPR: Publishes the Integrated Energy Policy Report the State s energy policy document 4

5 California Energy Efficiency Policy Avoid new power plants & transmission while maintaining reliability, affordability, & safety Meet resource needs at lowest cost & least environmental impact Loading order: 1) Energy efficiency & demand response 2) Renewable generation 3) Cleanest conventional sources 5

6 : the 2015 IPER Vision A ZNE Design Designation Building is one where the value of the net amount of energy produced by on-site renewable energy resources is equal to the value of the energy consumed annually by the building, at the level of a single project seeking development entitlements and building code permits, measured using the California Energy Commission s Time Dependent Valuation (TDV) metric. A ZNE Design Designation Building meets an Energy Use Intensity (EUI) value designated in the Building Energy Efficiency by building type and climate zone that reflect best practices for highly efficient buildings. 6

7 Zero Net Energy Achieve additional energy savings from building components regulated under Title-24, Part 6 to reach ZNE goals Integrate onsite generation into building to accomplish ZNE Impacts of Building on Home Energy Use 7

8 California for California Climates Focus on CA Climate Diversity set expectations for climate-specific designs CA weather data captures statewide coincident peak demand climate conditions Coastal - 1, 3, 5, 6, 7, 8 Inland - 2, 4, 9, 10 Central Valley - 11, 12, 13 Desert - 14, 15 Mountains -16 8

9 Compliance Options Mandatory Measures All buildings must comply with mandatory measures regardless of compliance path Prescriptive Compliance Compliance through prescriptive packages which vary by climate zone no tradeoffs allowed Performance Compliance Use an approved compliance modeling program to demonstrate compliance for the entire building allows tradeoffs of prescriptive measures Compliance Options Measures that are not required prescriptively, but can result in a compliance credit if installed, such as overhangs and fins For more info on compliance options consult the Residential Compliance Manual

10 PV Tradeoff 1. The provided a flexible PV tradeoff credit that was just large enough to trade away the HPA and HPW 2. The credit was provided to allow some builders more time to adopt the HPA and HPW as common building practice 3. The 2013 envelope features became the baseline for using the PV credit 4. For the 2019, the PV tradeoff will no longer be available to trade away the HPA and HPW 10

11 Range of Options High Performance Attics (HPA) performance defined by: Roof deck insulation equivalent to R-13 insulation below deck and R-38 ceiling insulation in Climate Zones 4 and 8 through 16. Choices may include spray foam, batt, or blown-in, and SIP panels. However, the builder has many other options, all meeting the HPA performance requirements: R-6 continuous insulation above deck with radiant barrier Hybrid roofing systems combining insulation and higher roof reflectance Ducts in conditioned space (DCS) Ducts in sealed or unvented attics Or other solutions suggested by the industry Option A (Above Deck) Option B (Below Deck) 11

12 Range of Options Below Deck Insulation (Ventilated) Above Deck Insulation Sealed Attic with Blown-in Insulation Ducts in Conditioned Space 12

13 Range of Options High Performance Walls (HPW) performance defined by: R19 cavity + R5 Continuous Insulation U-Factor (Approx 0.051) in all Climate Zones but 6, and 7 which is set at a U-factor of However, the builder has many other options, all meeting the HPW performance requirements: 16 OC, R15 + R-8 CI (0.051) 24 OC, R19 + R-5 CI (0.049) 24 OC R21 + R-4 CI (0.048) Staggered studs with batt insulation or spray foam Structurally Insulated Panels (SIPs) Or other solutions suggested by the industry 13

14 Other Measures Instantaneous (Tankless) Water Heaters Basis of prescriptive and performance approach set on federal IWH performance Currently at Energy Factor of 0.82 For tanks less than 55 gallons, allow prescriptive alternative for standard storage water heaters in combination with: Quality Insulation Installation (QII), with either Compact pipe distribution design, or Insulating all half inch and larger hot water pipes For tanks above 55 gallons, no QII is required, only combine with compact distribution or pipe insulation Use the performance path for additional options, such as electric heat pump water heaters 14

15 Plans for , effective January 1, 2020, the PV tradeoff will no longer be available to trade away the HPA and HPW. High Performance Walls (HPW) Will have a lower U-factor Climate Zones 1 and 11 through 16 (other CZs same as ) High Performance Attics (HPA) More roof deck insulation For Single Family: CZs 4 and 8 through 16 (other CZs same as ) For Multifamily: CZs 4, 8, 9 and 11 through 15 Quality Insulation Installation (QII) Single Family & Multifamily All Climate Zones

16 Quality Insulation Installation (QII) Appendix RA3 Residential Field Verification & Diagnostic Test Protocols RA3.5 Quality Insulation Installation Procedure A procedure for verifying the quality of insulation installation and air leakage control used in low-rise residential buildings. This procedure is to be followed by the insulation installer and a qualified Home Energy Rating System (HERS) rater must verify its conformance for meeting the requirements of Sections 150.1(c), and 110.7of the. The procedure applies to wood and metal construction of framed and non-framed envelope assemblies. Framed assemblies include wall stud cavities, roof/ceiling assemblies, and floors. 16

17 Quality Insulation Installation Types Product Types Which Can Be QII Batt & Blanket Loose Fill Rigid Board SPF SIP ICF 17

18 Why We Have QII 18

19 Why We Have QII 19

20 What QII Should Look Like

21 2019 Process 1. Update the TDV values to reflect the current NG and Electricity costs 2. Update the Life Cycle Costing (LCC) assumption based on TDV and other parameters 3. Using the updated TDVs, evaluate cost effectiveness of additional envelope measures for the extreme cooling climate zones; possible measures include: additional roof deck insulation for high performance attics, lowering the U-factors for high performance walls, higher performing windows and doors, and prescriptive QII. 4. Using the updated TDVs, determine the cost effectiveness and size of PV systems for each climate zone. 21

22 2019 Process We are very early in the process, the pre-rulemaking is set to begin soon 2019 STANDARDS UPDATE SCHEDULE Date Milestone February July Measures Identified and Approved August June 2017 Stakeholder Meetings/Workshops & Final Staff Workshop April 2017 CASE Reports Submitted to the CEC December 1, day Language Hearings March 1, 2018 Adoption of 2019 at Business Meeting June 2018 November 2018 Staff Work on Software, Compliance Manuals, Electronic Documents November 1, 2018 Approval of the Manuals and Documents January 1, 2019 Software, Compliance Manuals, Electronic Documents Available to Industry January 1, 2020 Effective Date 22

23 Pre-Rulemaking Schedule Date April 20, 2017 June 1, 2017 June 6, PRE-RULEMAKING WORKSHOP SCHEDULE Topic(s) Photovoltaics (PV) and Zero Net Energy (ZNE) Residential Envelope Measures Residential High Performance Walls (HPW) Residential High Performance Attics (HPA) Residential High Performance Windows and Doors Residential Quality Insulation Installation Residential Water Heating Measures Residential Compact Hot Water Distribution Design Residential Drain Water Heat Recovery Indoor Air Quality Measures Residential Indoor Air Quality Nonresidential Indoor Air Quality Laboratory Measures Induction Exhaust Fans High Efficiency Fume Hoods Warehouse Topics Hybrid Condensers Loading Dock Seals Residential HVAC Measures Residential Quality HVAC

24 Pre-Rulemaking Schedule (continued) Date June 20, 2017 Topic(s) Nonresidential HVAC Water Side Economizer Fan System Power Exhaust Air Energy Recovery Equipment Efficiency Transfer Air for Exhaust Air Makeup Demand Control Ventilation for Classrooms Occupant Sensor Ventilation Cooling Tower Minimum Efficiency Fault Detection Diagnostics (FDD) for Built-Up Systems June 22, 2017 June 29, 2017 July 13, 2017 Nonresidential Lighting Measures Indoor Lighting Sources Indoor Lighting Controls Lighting Alterations Advanced Daylighting Design Outdoor Lighting Source Outdoor Lighting Controls Hospitals Demand Response ATTCP Requirements TBD

25 Key Web-Links/Resources 2019 Utility-Sponsored Stakeholder Information Building Energy Efficiency Program Docket for Comments BSTD-01. Compliance Software Energy Hotline (800) or (916)

26 Contact Information Energy Commission Michael Shewmaker, CEA AES, Building Office Christopher Meyer Manager, Building Office Payam Bozorgchami, PE Project Manager, 2019 Building

27 Questions? 27