Energy Target and Benchmark Tool Webinar Demonstration July 7, 2020 - - PowerPoint PPT Presentation

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Energy Target and Benchmark Tool Webinar Demonstration July 7, 2020 - - PowerPoint PPT Presentation

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Energy Target and Benchmark Tool Webinar Demonstration July 7, 2020 Bay Area Regional Energy Network (BayREN) BayREN is: one of three regional energy networks (RENs) in California a collaboration of the nine counties that make up the San

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July 7, 2020

Energy Target and Benchmark Tool Webinar Demonstration

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Bay Area Regional Energy Network (BayREN)

BayREN is:

§ one of three regional energy networks

(RENs) in California

§ a collaboration of the nine counties that

make up the San Francisco Bay Area

§ focused on saving energy, together with

protecting climate and health

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BayREN Codes & Standards Program Provides support by and for Bay Area local governments in order to increase energy performance of buildings, through activities such as:

§Quarterly regional forums §Trainings for local building departments §Resources to support energy code

compliance as well as energy policy and reach code innovation, adoption, and implementation

www.bayrencodes.org

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Codes and Standards

To connect energy targets with performance

§ Energy Code requirements are based on modeled and

estimated future energy use of a building

§ Benchmarking requirements look at current actual

energy use of a building

Energy Target and Benchmark T

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July 7, 2020

Energy Target & Benchmark Tool

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Energy Target & Benchmark T

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Objective: Share the purpose and key uses for the BayREN ETBT

bayrencodes.org/ resources/ targetbenchmarktool/

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Purpose: Connect design targets to existing building energy performance. Supports:

§ Energy Performance Management § Outcome-Based Contract or Code

bayrencodes.org/ resources/ targetbenchmarktool/

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ETBT can help put your project’s energy budget in context with: § Typical performance for T24 compliance § 2030 Challenge § Zero Net Energy Free and non-proprietary

bayrencodes.org/ resources/ targetbenchmarktool/

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Wonky Bits Ahead

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Pros Cons EUI (kBtu/ ft2-yr)

  • Simple
  • Widely recognized
  • Difficult to adjust fairly for process

loads, building types, climate, etc.

  • Difficult to baseline against different

versions of code

ENERGY STAR Target Finder

  • Widely recognized
  • Integrated with Portfolio M anager
  • Relative, not absolute metric
  • Difficult baseline against different

versions of code

Percent Better than Code (?)

  • Simple to say
  • M eaningless to compare between code

vintages

zEPI Zero Energy Performance Index

  • Adjusts for process loads, use types,

climate

  • Easy to baseline and scale to code

versions

  • Integrated with Portfolio M anager

(somewhat)

  • Not widely used (yet)

How should energy performance be measured?

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Reference: SCE & AEC, “Rethinking Percent Savings”, 2009

Reference Baseline zEPI = 100 CBECS 2003 equivalent

Zero Net Energy zEPI = 0

Title 24 2019

Zero Energy Performance Index (zEPI)

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Reference: SCE & AEC, “Rethinking Percent Savings”, 2009

Reference Baseline zEPI = 100 CBECS 2003 equivalent

Zero Net Energy zEPI = 0

Title 24 2019

Zero Energy Performance Index (zEPI)

  • Absolute, “Zero = 0”
  • Fair
  • Stable
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Zero Energy Performance Index

=

  • 100
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ℎ = 100

Zero Energy Performance Index for Title 24

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(A Bit) Less Wonky From Here

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http:/ / bit.ly/ bayrenzepi

Before Construction

  • Provide context for an energy use target
  • Encourages setting an energy budget between T24 (expected

performance by code) and 2030 Challenge (exceptional efficiency)

  • Roughly estimates rooftop PV potential, providing an ‘energy budget’ for

site-ZNE In Operation

  • Determine if target is met

What the Energy Target & Benchmark Tool Does

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Behavioral program: Set performance target prior to construction, update as design progresses, compare actual performance to target, and facilitate discussion. (Current San Francisco use) Outcome based contract or code: On either a project or policy level, require setting performance target prior to construction (ZNE, efficient-but-not ZNE or other), compare actuals to target, and provide rewards or corrections based on outcome.

How the Energy Target & Benchmark Tool Can Be Used

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The Tool Supports any M ix of:

bayrencodes.org/ resources/ targetbenchmarktool/

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BayREN Energy Target and Benchmark T

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http:/ / bit.ly/ bayrenzepi

Before Construction

  • Set an energy use target
  • Tool suggests energy budget should be between T24 (code minimum) and

2030 Challenge (exceptional efficiency)

  • Roughly estimate ZNE feasibility

In Operation

  • Determine if target is met
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What Specifically Can I do with ETBT?

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New Construction – Set a Goal

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Existing Portfolio – Prioritize

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Municipal ZNE Assistance

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M unicipal ZNE Assistance – ETBT Tool for Prioritization

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Demo

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Copy and Paste to Excel

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Download and Save a Building

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Print Y

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(for Submittal)

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§ How has BayREN linked Design with Energy

Benchmarking?

§ How does it work? § How can I benefit?

BayREN Energy Target & Benchmark Tool Webinar July 7, 11 am – 12 pm Registration link coming soon to: bayrencodes.org/events/ Or visit: bayrencodes.org/ resources/ targetbenchmarktool/