February 18, 2020February 18, 2020

IECC in Texas: What, Why and How

Energy Codes SpecialistTexas A&M Engineering Experiment Stationshirleyellis@tamu.edu

ICC Board of Directorssellis@iccsafe.org

Shirley Ellis, CBO

February 18, 2020

Agenda• What

- Adoption of the ICC International Energy Conservation Code (IECC)- Energy Systems Laboratory

• Why- The IECC is important to Texans- Enforcement

• How- Adopt/Amend the IECC on the local level- Applying the IECC

Adoption of the ICC International Energy Conservation Code (IECC)

What

February 18, 2020

Texas Emissions Reduction Plan (TERP)• Diesel emissions reduction incentive• Motor vehicle purchase or lease incentive• New technology research and development• Energy efficiency grant • Texas Building Energy Performance Standards

(TBEPS)

PresenterPresentation NotesThe Federal Clean Air Act authorizes the United States Environmental Protection Agency (EPA) to establish the maximum allowable concentrations of pollutants that can endanger human health, harm the environment, and cause property damage. A significant portion of Texas currently does not meet these standards and is facing severe sanctions if attainment is not reached by 2007. While the Texas Natural Resource Conservation Commission (commission) has submitted a proposed State Implementation Plan (SIP) requiring emissions reductions of sources under their control, there are significant areas of potential emission reductions the commission cannot regulate but which may be realized through incentive programs. S.B. 5 establishes programs to encourage emissions reductions.

February 18, 2020

Texas Building Energy Performance Standards (TBEPS) Health and Safety Code 388

• The 2015 IECC, as published- Residential Provisions

• Single-family and multi-family residential buildings under three stories

• Effective September 1, 2016- Commercial Provisions

• Commercial, industrial and multi-family residential three stories or greater

• Effective November 1, 2016

February 18, 2020

HB 1736, Section 388.003, Health and Safety Code• (a) adopts the 2015 IRC for residential, with the next adoption not

before 2021• (b) allows the IECC to be adopted, in addition to the IRC, Chapter 11 • (b-2) adds building material manufacturers to list of those who may

submit comments to SECO• Subsections (b-3) ESL mandates

• (d) allows local amendments to the ERI in accordance with (j)- (i) ERI is considered to be in compliance- (j) changes ERI values- (k) sets expiration date for (j) 9-1-2025

Energy Systems Laboratory overview

What

February 18, 2020

Energy Systems Laboratory• Division of Texas A&M Engineering Experiment Station

(TEES), member of The Texas A&M University System • Affiliated with Departments of Mechanical Engineering,

Architecture and Construction Science• Faculty and staff includes acclaimed professors,

researchers, analysts, certified mechanical engineers, industry experts, graduate and undergraduate students

February 18, 2020

Our Purpose• ESL directs its efforts toward innovative energy

technologies and systems, and toward commercializing affordable results for industry

• It has made major contributions to improved energy efficiency by focusing it’s limited resources on - Environmental benefits of reduced energy use- Analysis of savings from energy efficiency projects- Dissemination of knowledge through conferences and workshops- Continuous Commissioning of buildings and thermal plants

PresenterPresentation NotesContinuous Commissioning of buildings and thermal plantsEnhanced building operations & energy use reductionBuilding energy codesEmissions reduction (pollution reduction) calculations Building energy modeling and analysis Energy managementCommissioning practicesMeasurement and verification (M&V) proceduresCentral heating and cooling plant end-use energy reductionThe ESL has been instrumental in the development of many national and international industry standards, protocols, codes, and guidelines.

February 18, 2020

National Designations

• U.S. Environmental Protection Agency (EPA)- National Center of Excellence on Displaced

Emission Reductions (CEDER) – First of only 2 in the Nation!

• U.S. Department of Energy (DOE) Industrial Assessment Center

February 18, 2020

Statutory Responsibilities – State • Participate in energy code adoption rule-making process • Analyze stringency of newly published energy codes in comparison

to the current TBEPS• Consider public comments submitted to SECO • Report to SECO the findings & recommend adoption • Determine whether a national, state, or local accredited energy

efficiency program is in compliance with TBEPS• Develop 3 alternative methods for achieving a 15% above code

energy savings in residential, commercial, and industrial construction

February 18, 2020

Statutory Responsibilities - Local• Assist municipalities, counties and Council of Governments• Review & analyze the stringency of local amendments • Suggest improvements to proposed local amendments• Provide technical assistance concerning implementation

and enforcement of TBEPS and local amendments• Develop & administer statewide training program for

builders, designers, engineers, inspectors, home raters, architects

February 18, 2020

Statutory Responsibilities - Additional• Provide code implementation materials to builders,

designers, engineers and architects• Develop & maintain the IC3 – compliance software tool

• Calculate reduction in air pollution and energy savings • TERP Energy Efficiency & Renewable Energy programs• Applicable to the State Implementation Plan (SIP) Credits• Report findings annually to:

• Texas Commission for Environmental Quality (TCEQ) • U.S. Environmental Protection Agency (EPA)• Electric Reliability Council of Texas (ERCOT)

The IECC is important to Texas

Why

February 18, 2020

NOx emissions reductions calculation from electricity savings

• Transmission Lines• Sub-Station

TRANSMISSION &

DISTRIBUTION

• Residential• Commercial• Industrial

CONSUMPTION

• Conventional• RenewableGENERATION

Energy Savings from EE/RE Programs

Energy Production & Emissions Reductions

February 18, 2020

2016 integrated OSD NOx Emissions Reduction

• ESL Code Compliance (1.87 tons/day) • PUC SB7 programs (2.39 tons/day) • SECO Political Sub.* (0.67 tons/day) • Green Power (Wind) (28.91 tons/day) • Residential AC Retrofits (0.43 tons/day) Total (2016) (34.28 tons/day)

2016 Integrated OSD NOx Emissions Reduction Using new 2010 eGrid

INTEGRATED NOx EMISSIONS REDUCTIONS (2008 Base year)

15.70

2020 integrated OSD NOx Emissions Reduction

• ESL Code Compliance (4.80 tons/day) • PUC SB7 programs (3.40 tons/day) • *SECO Political Sub. (0.69 tons/day) • Green Power (Wind) (40.07 tons/day) • Residential AC Retrofits (0.35 tons/day) Total (2020) (49.31 tons/day)

2014

05

101520253035404550

2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020

Tons

/Ozo

ne S

easo

n D

ay

ESL-Single Family ESL-Multifamily ESL-Commercial PUC (SB7)SECO Wind-ERCOT SEER13-Single Family SEER13-Multi Family

34.28 tons/day

49.31 tons/day

February 18, 2020

Savings (2002 to 2017)Electricity (Envelope): $2,151 million (+10.6%)Electricity (HVAC Systems): $1,902 million (+21.7%)Demand: $2,718 million (+14.3%)Total: $6,771 million (+15.1%)

2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017Capacity Savings - - $79 $163 $251 $345 $430 $678 $822 $929 $1,028 $1,118 $1,327 $1,563 $1,814 $2,057 $2,377 $2,718Elec. Savings_Systems $0 $0 $0 $0 $0 $55 $138 $240 $351 $476 $624 $813 $1,039 $1,286 $1,563 $1,902Elec. Savings_Envelope - - $16 $48 $97 $175 $304 $451 $615 $776 $930 $1,082 $1,236 $1,403 $1,583 $1,763 $1,945 $2,151Cost - - $64 $136 $218 $321 $422 $536 $610 $669 $729 $788 $914 $1,060 $1,220 $1,386 $1,595 $1,825

$0

$500

$1,000

$1,500

$2,000

$2,500

$3,000

$3,500

$4,000

$4,500

$5,000

$5,500

$6,000

$6,500

$7,000

$7,500

Milli

on $

Elec. Savings_Envelope Elec. Savings_Systems Capacity Savings Cost

Emissions Reduction in 2017(Equivalent to about 50,700 cars)

Increased Costs (2002 to 2017)Costs: $ 1,825 million

STATEWIDE SAVINGS FROM CODE COMPLIANCE 2000 – 2017 (ESTIMATED)

Demand: $2,718 million

Electricity (Envelope): $2,151 millionCost: $1,825 million

Total: $6,771 million

Electricity (HVAC Systems): $1,902 million

NOx Emissions Reduction66.69 tons NOx / year

Milli

ons

$

PresenterPresentation NotesSingle Family

NOx emissions reduction (baseyear 2008 for the nox emission reduction)

Number of cars are calculated by multiply 760

Enforcement

Why

February 18, 2020

Enforcement• ICC certified inspectors

- Commercial Energy Inspector- Commercial Energy Plans Examiner- Commercial Energy Inspector/Plans Examiner with ASHRAE

90.1- Residential Energy Inspector/Plans Examiner

• Third-party- Above code programs- Code required inspections

February 18, 2020

Inspections – 2018 IECC – Commercial• C105.1 General Inspections –

- Approval as a result of an inspection shall not be construed to be an approval of a violation of this code or of other ordinances of the jurisdiction.

- Inspection presuming to give authority to violate or cancel the provision of this code or of other ordinances of the jurisdiction shall not be valid.

• C105.2 Required inspections- Clarification of requirements specific to the type of inspection

February 18, 2020

Inspections – 2018 IECC• C105.2 Required inspections

- C105.2.1 Footing and foundation insulation- C105.2.2 Thermal envelope- C105.2.3 Plumbing system- C105.2.4 Mechanical system- C105.2.5 Electrical system- C105.2.6 Final Inspection

• Building commissioning

Adopt/Amend the IECC on the local level

How

February 18, 2020

Local Amendments – Review process

• Prepare amendment package and forward to the ESL with a request for review

TYPICAL REQUEST

The City of (name) is proposing adoption of the 2015 ICC family of codes, including the International Energy Conservation Code (IECC), with amendments for use in our jurisdiction. Attached is the proposed amendment package for the IECC.

Please review the proposed amendments 19 to determine equivalent stringency or better in comparison to the State adopted base code. The coordinator listed below is the contact for any questions or clarifications.

Respectfully,

February 18, 2020

Amendment Review Example

• Section R403.3.3 for duct testing is amended from mandatory to optional requiring additional steps to ensure the ducts are sealed instead of requiring third party testing.- The amendment has the potential to be less stringent than

the actual 2015 IECC

Applying the IECC

How

February 18, 2020

Table of Contents• Chapter 1 – Scope and Administration

- Part 1 – Scope and Application- Part 2 – Administration and Enforcement

• Chapter 2 – Definitions• Chapter 3 – General Requirements• Chapter 4 – Energy Efficiency• Chapter 5 – Existing Buildings• Chapter 6 – Referenced Standards

February 18, 2020

Table of Contents – Appendix• CA – Solar-Ready Zone – Commercial• RA - Solar-Ready Provisions - Detached One- and Two-

family Dwellings, Multiple Single-family Dwellings (Townhouses)

February 18, 2020

IECC Commercial Compliance Process

February 18, 2020

IECC Residential Compliance Process

Energy Rating Index Compliance

Alternative

PresenterPresentation Notesexplain to students graphic has been updated from workbook. The residential compliance process is more accurately depicted with the new graphic

February 18, 2020

Energy Rating Index

February 18, 2020

R406.4 Maximum Energy Rating Index 2018 IECC vs HB 1736

Climate Zones 1, 2, & 3 57Climate Zone 4 62Climate Zone 5 & 6 61Climate Zone 7 & 8 58

a b cClimate Zone 2 65 63 59Climate Zone 3 65 63 59Climate Zone 4 69 67 63

a = 9-1-2016 to 8-31-2019b = 9-1-2019 to 8-31-2022c = 9-1-2022 …..

IC3 – International Code Compliance Calculator

February 18, 2020

NOx emissions reductions calculation from electricity savings

NOx REDUCTIONS USING eGRID

• Transmission Lines• Sub-Station

TRANSMISSION &

DISTRIBUTION

• Residential• Commercial• Industrial

CONSUMPTION

• Conventional• RenewableGENERATION

Energy Savings from EE/RE Programs

Energy Production & Emissions Reductions

February 18, 2020

Simulation Analysis Flowchart• Multiple simulation runs performed (IC3 and DDP)• Uses nearest TMY weather files for simulations,

eGRID for emissions• Annual values for Code-compliant house and

User house compared• For code-compliance User house must be less

than or equal to Code-compliant house• Emissions reductions recorded in Registry for

credit toward SIP credits

PresenterPresentation NotesInstructors: explain to students graphic has been updated from workbook. The residential compliance process is more accurately depicted with the new graphic

February 18, 2020

Desktop DOE-2 Processor (DDP)

• Uses a flexible, single-family input file.• Runs simulation for each row of the spreadsheet

via INCLUDE & weather files. • Allows for traceable analysis using simulations

for multiple runs in any location in Texas• Documentation automatically provided with DDP

February 18, 2020

Login Screen

Current Version 4.3.2: IECC 2015

February 18, 2020

Main Page

Current Version 4.3.2: IECC 2015

February 18, 2020

Main Page - ERI pathway

Current Version 4.3.2: IECC 2015

February 18, 2020

Energy Code/Site Address/Project Details

Current Version 4.3.2: IECC 2015

February 18, 2020

Global Parameters

Current Version 4.3.2: IECC 2015

February 18, 2020

Walls/Window/Floor Area

Current Version 4.3.2: IECC 2015

February 18, 2020

Testing

Current Version 4.3.2: IECC 2015

February 18, 2020

Roof/Ceiling Area

Current Version 4.3.2: IECC 2015

February 18, 2020

Foundation

Current Version 4.3.2: IECC 2015

February 18, 2020

A/C

Current Version 4.3.2: IECC 2015

February 18, 2020

Heating

Current Version 4.3.2: IECC 2015

February 18, 2020

Water Heater

Current Version 4.3.2: IECC 2015

February 18, 2020

Water Heater

Homeowner Certificate

Current Version 4.3.2: IECC 2015

February 18, 2020

R401.3 Certificate

Current Version 4.3.2: IECC 2015

February 18, 2020

Thank you for your participation

IECC in Texas: �What, Why and HowShirley Ellis, CBOAgendaWhatTexas Emissions Reduction Plan (TERP)Texas Building Energy Performance Standards (TBEPS) Health and Safety Code 388HB 1736, Section 388.003, Health and Safety CodeWhatEnergy Systems LaboratoryOur PurposeNational DesignationsStatutory Responsibilities – State Statutory Responsibilities - LocalStatutory Responsibilities - AdditionalWhySlide Number 16Slide Number 17Slide Number 18WhyEnforcementInspections – 2018 IECC – CommercialInspections – 2018 IECCHowLocal Amendments – Review processAmendment Review ExampleHowTable of ContentsTable of Contents – AppendixIECC Commercial Compliance ProcessIECC Residential Compliance ProcessEnergy Rating IndexR406.4 Maximum Energy Rating Index � 2018 IECC vs HB 1736IC3 – International Code Compliance CalculatorSlide Number 34Simulation Analysis FlowchartDesktop DOE-2 Processor (DDP)Slide Number 37Slide Number 38Slide Number 39Slide Number 40Slide Number 41Slide Number 42Slide Number 43Slide Number 44Slide Number 45Slide Number 46Slide Number 47Slide Number 48Slide Number 49Slide Number 50Thank you for your participation