Creating a Market Value for Water Efficiency in Residential Buildings

Transcription

1 Creating a Market Value for Water Efficiency in Residential Buildings The RESNET/International Code Council Water Efficiency Rating Index ANSI Standard 2016 International Emerging Technology Symposium Steve Baden, RESNET Mark Johnson, International Code Council

2 Right Time for a Water Efficiency Rating System We shall all know the value of water when the well runs dry.

3 Who is the International Code Council Nonprofit corporation 58,000 members, 360 Chapters A model code and standard developer covering all segments of the building sector Staff of more than 250 engineers, architects and administrators Currently maintain 15 base codes and 10 Standards Updates Codes triennially

4 International Code Council A family of 15 coordinated and correlated codes International Building Code International Fire Code International Mechanical Code International Plumbing Code International Residential Code International Fuel Gas Code International Property Maintenance Code International Private Sewage Disposal Code International Zoning Code International Wildland Urban Interface Code ICC Performance Code for Buildings and Facilities International Swimming Pool & Spa Code International Green Construction Code International Energy Conservation Code International Existing Building Code Public Access: codes.iccsafe.org

5 ICC Codes/Standards and Their Impact on Water Conservation International Green Construction Code (IgCC) International Plumbing Code (IPC) International Water Efficiency Provisions (WEP) ICC/ASHRAE 700 National Green Building Standard ICC Standards ASABE/ICC Landscape Irrigation & Sprinkler Emitter Standard Rainwater Collection Standard (ICC/CSA)* RESNET/ICC Water Rating Index*

6 How Building Codes & Standards Impact Water Efficiency While most water efficiency programs are voluntary, codes and standards are mandatory Todays codes offer more flexibility for jurisdictions through introducing scalable performance options Standards primarily address the product itself, codes address where and when it is installed Codes & Standards have the greatest impact on water efficiency through setting the minimum baseline for all building occupancies Codes and Standards are only as effective as their enforcement

7 This image cannot currently be displayed. Why ICC? Over 100 years codes/standards experience and expertise Inclusive process open to all interested parties ICC Codes/Standards are widely adopted nationally Has global reach Has the infrastructure in place to support the implementation of codes/standards

8 A Balanced Building Regulatory Support System Building Regulations Effective Implementation Open development process Input from all interested parties Continuously kept current Skilled Technical Committees Necessary checks and balances Plan review Building inspection Education and training Support Publications Certification and accreditation Building product evaluation

9 What Will the WERS Contain? A Water Efficiency Rating Index Definition of a Reference Home to which a Rated home s water efficiency will be compared Provisions for the calculation of a home s water efficiency and Water Efficiency Rating Index Score Provisions for the inspection and testing of the water features of a residential building

10 Application of WERS Standard May be applied as a voluntary incentive based standard Can be used to set minimum mandatory requirements Utilized to set minimum mandatory with added performance based incentives Index number can be set according to specific location and conditions

11 Who is RESNET An industry based, not for profit organization A national standards making body for building energy efficiency rating and certification systems in the USA (ANSI Accredited Standards Development Organization) Consensus based standard development and amendment process Transparent review and adoption process Formal public review and comment process

12 What Are Home Energy Ratings A home energy rating is a whole house analysis of a home s energy efficiency by a trained and certified RESNET Home Energy Rater. The house data is entered into a RESNET accredited rating software tool which produces the rating The rating produces a HERS Index Score. The HERS Index is the nationally recognized scoring system for measuring a home s energy performance. The HERS Index can be described as a miles pergallon (MPG) sticker for houses.

13 The RESNET HERS Index

14 HERS Ratings Conducted in 2015

15 HERS Ratings in 2015

16 Right Time for a Water Rating System Dry conditions focus public attention Increasing costs of water and wastewater Expanding technology for water efficiency Existing energy rating system reaching is now reaching national scale

17 USDA NOAA

18 My State California

19 Value of Water Efficiency is More Than Saving Money Hydropower Growth Economy

20 Rising Water & Sewer Rates: Approx. 9% per year $ Rising Water & Sewer Rates (Source: Black & Veatch Largest 50 metros) $ $ $ $50.00 Sewer Water $ (proj.) 2014 (proj.) 2015 (proj.) 2016 (proj.) 2017 (proj.)

21 Game Changer for RESNET ANSI Adopts RESNET Domestic Hot Water Systems Amendment to the ANSI/RESNET/ICC Standard 301

22 Steps to Develop RESNET WER Index Domestic Hot Water Systems Calculations Add a Few More Indoor and Outdoor Water Usage Calculations Factor in New Technologies Compare to a Reference Home Field Verification RESNET Water Efficiency Rating System

23 This image cannot currently be displayed. Why RESNET? A national non profit, multistakeholder organization Oversees the Home Energy Rating System (HERS) for scoring the energy efficiency of homes HERS recently amended to better score hot water use RESNET works with about 5,000 certified HERS raters nationwide Operates at scale: 1/3 of new homes received a HERS rating in 2014

24 Key Objectives for the WER Index Nationwide applicability Suitable for both new and existing homes Encompasses both indoor and outdoor water efficiency Practical and affordable to administer Scores usable for quantitative comparison

25 Key Attributes of the WER Index Compares a rated home to a reference home of comparable size Reference home has fixed attributes typical of the recent past Reference home score = 100 Software assists in tallying the incremental differences in water consumption resulting from specific features of the home

26 WER Committee Structure Each balanced with Energy and Water Experts WER Index Advisory Council Open call 75 members WER Index Task Force technical committee 13 members 3 co chairs: o Jacob Atalla, KB Home o Ed Osann, NRDC o Jonah Schein, EPA WER Index Task Force Technical Subcommittees Modeling & Development of Reference Home Indoor Water Use Outdoor Water Use Rating Inspection & Test Procedures Rater Training & Qualification Requirements Broad stakeholder participation: Raters, Builders, Suppliers, Trades, Water Utilities, Software Developers, Consultants, Green Building Programs

27 A Win for All Environment Homeowners Builders Raters Water Districts Municipalities / Government Suppliers / Innovators Green Building Programs