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1U.S. DEPARTMENT OF ENERGY OFFICE OF ENERGY EFFICIENCY & RENEWABLE ENERGY
Updates from the Building Energy Codes Program2021 National Energy Codes ConferenceJeremy Williams, Building Technologies OfficeJuly 21, 2021
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2U.S. DEPARTMENT OF ENERGY OFFICE OF ENERGY EFFICIENCY & RENEWABLE ENERGY
Model Energy Code Determinations
> Every household in the U.S. should have the opportunity to benefit from the latest building codes and standards.
JUST ANNOUNCED: Model energy code Determinations:
• Commercial: 4.7% site energy savings based on Standard 90.1-2019• Residential: 9.4% site energy savings based on the 2021 IECC
Adopting the latest building codes is a critical opportunity to increase energy efficiency in buildings, as well as to ensure modern standards for health, comfort, durability and resilience in their homes, businesses, and communities.
DOE is challenging states, local governments, and the design and construction industry to update their building energy codes based on the latest model codes and standards, and to help ensure all construction meets or exceeds these standards.
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3U.S. DEPARTMENT OF ENERGY OFFICE OF ENERGY EFFICIENCY & RENEWABLE ENERGY
New Technical Assistance Supporting Energy Codes
> DOE is ramping-up efforts to support building energy codes and help states and local governments embrace the latest standards.
JUST ANNOUNCED: New technical assistance to support state and local adoption and implementation of building energy codes: • State, regional and national partnerships to support energy codes• Innovative “stretch” concepts, from PV and EV charging, to advanced EE, building
performance standards for existing buildings, to smart homes and more! • Workforce education and training initiatives that help workers take advantage of
new technologies, construction practices, and evolving building standards • Technical analyses to quantify the impacts on energy savings, cost-benefit, jobs
and the economy, and related GHG impacts
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4U.S. DEPARTMENT OF ENERGY OFFICE OF ENERGY EFFICIENCY & RENEWABLE ENERGY
New Technical Assistance Supporting Energy Codes
> DOE and PNNL have just released 177 new technical reports, factsheets and other resources to support the latest codes.
• National energy savings analysis for the 2021 IECC and Standard 90.1-2019 • National cost-effectiveness analysis for the 2021 IECC and 90.1-2019• State cost-effectiveness analysis for the 2021 IECC and 90.1-2019 • State and city factsheets highlighting the benefits of the latest codes• New stretch code concepts which can be adopted by states or local governments,
or considered for future model codes (e.g., EV charging)
• Updated Impact Report quantifying the energy, cost and carbon impacts associated with the latest codes
• Plus, visit the brand new energycodes.gov
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5U.S. DEPARTMENT OF ENERGY OFFICE OF ENERGY EFFICIENCY & RENEWABLE ENERGY
What are the Impacts?
Building energy codes are projected to result in (2020 through 2040):
$138 billionin energy cost savings to homes and businesses
13 quadsof primary energy savings
900 million metric tons of avoided CO2 emissions
REFERENCE: https://www.energycodes.gov/impacts
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6U.S. DEPARTMENT OF ENERGY OFFICE OF ENERGY EFFICIENCY & RENEWABLE ENERGY
MAPS + INFOGRAPHICSDOE Bui ld ing Energy Codes Program
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7U.S. DEPARTMENT OF ENERGY OFFICE OF ENERGY EFFICIENCY & RENEWABLE ENERGY
Historical Improvement: IECC and Standard 90.1
ASHRAE90-1975
90.1-198990.1-1999
90.1-200490.1-2007
90.1-201090.1-2013
90.1-201690.1-2019*
1986 MEC1995 MEC 2000 IECC 2006 IECC
2009 IECC2012 IECC
2015 IECC2018 IECC
2021 IECC*
0.0
20.0
40.0
60.0
80.0
100.0
120.0
1975 1980 1985 1990 1995 2000 2005 2010 2015 2020 2025
Nor
mal
ized
Ene
rgy
Use
(197
5 U
SE =
100
)
Year
Improvement in Residential & Commercial Energy Code(Year 1975-2021)
Commercial Residential
Source: Pacific Northwest National Laboratory
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8U.S. DEPARTMENT OF ENERGY OFFICE OF ENERGY EFFICIENCY & RENEWABLE ENERGY
> Broken out by end use—envelope, heating, cooling, SWH, lighting, etc. (Standard 90.1)
Improvement in ASHRAE Standard 90/90.1 (1975-2013) with Projections to 2030. Courtesy of Pacific Northwest National Laboratory.
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9U.S. DEPARTMENT OF ENERGY OFFICE OF ENERGY EFFICIENCY & RENEWABLE ENERGY
Commercial BuildingsNationally Weighted Average Energy
Index
Q: What if every state adopted the model code as published?
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10U.S. DEPARTMENT OF ENERGY OFFICE OF ENERGY EFFICIENCY & RENEWABLE ENERGY
Commercial BuildingsSite Energy Index by Code & State
> State codes and amendments have a significant effect…
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11U.S. DEPARTMENT OF ENERGY OFFICE OF ENERGY EFFICIENCY & RENEWABLE ENERGY
Residential BuildingsSite Energy Index by Code & State
> VT, NE and IN all have the 2018 IECC (VT and IN with amendments)
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12U.S. DEPARTMENT OF ENERGY OFFICE OF ENERGY EFFICIENCY & RENEWABLE ENERGY
Commercial BuildingsState Code Status
Commercial BuildingsANSI/ASHRAE/IES Standard 90.1
http
s://
ww
w.en
ergy
code
s.go
v/ad
optio
n/st
ates
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13U.S. DEPARTMENT OF ENERGY OFFICE OF ENERGY EFFICIENCY & RENEWABLE ENERGY
<90.1-200710%
90.1-200717%
90.1-201012%
90.1-201331%
90.1-201614%
No statewide …
PERCENT OF U.S STATES SERVED BYDIFFERENT VERSIONS OF THE COMMERCIAL
CODE
<90.1-20075%
90.1-200715%
90.1-20108%
90.1-201341%
90.1-201625%
No statewide
code6%
PERCENT OF U.S POPULATION SERVEDBY DIFFERENT VERSIONS OF THE
COMMERCIAL CODE
> A greater portion of the U.S. is subject to newer codes when measured by population (vs. state counts)
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14U.S. DEPARTMENT OF ENERGY OFFICE OF ENERGY EFFICIENCY & RENEWABLE ENERGY
Commercial BuildingsState Code Certifications
> https://www.energycodes.gov/adoption/states
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15U.S. DEPARTMENT OF ENERGY OFFICE OF ENERGY EFFICIENCY & RENEWABLE ENERGY
Data Source: ACEEE 2020 City Clean Energy Scorecard
Stretch Codes: State and Local Perspective
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16U.S. DEPARTMENT OF ENERGY OFFICE OF ENERGY EFFICIENCY & RENEWABLE ENERGY
Data Source: ACEEE 2020 City Clean Energy Scorecard
Stretch Codes: Solar and Electric Vehicles
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17U.S. DEPARTMENT OF ENERGY OFFICE OF ENERGY EFFICIENCY & RENEWABLE ENERGY
Data Source: ACEEE 2020 City Clean Energy Scorecard
Building Performance Standards (BPS)
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18U.S. DEPARTMENT OF ENERGY OFFICE OF ENERGY EFFICIENCY & RENEWABLE ENERGY
Single Family Field Studies
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19U.S. DEPARTMENT OF ENERGY OFFICE OF ENERGY EFFICIENCY & RENEWABLE ENERGY
Commercial & Multifamily Field Studies
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20U.S. DEPARTMENT OF ENERGY OFFICE OF ENERGY EFFICIENCY & RENEWABLE ENERGY
State Annual Energy Cost Savings Potential ($)
10 Year Energy Cost Savings Potential ($)
30 Year Energy Cost Savings Potential ($)
AL $1,300,000 $71,466,010 $604,212,630
GA $4,520,000 $165,391,600 $1,398,310,800
KY $1,220,000 $67,092,095 $567,233,170
MD $1,540,000 $84,853,395 $717,396,885
NC $2,030,000 $83,742,652 $708,006,057
PA $3,200,000 $148,466,353 $1,255,215,531
TX $4,850,000 $906,790,775 $7,666,503,825
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21U.S. DEPARTMENT OF ENERGY OFFICE OF ENERGY EFFICIENCY & RENEWABLE ENERGY
Active State Energy Code Collaboratives
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22U.S. DEPARTMENT OF ENERGY OFFICE OF ENERGY EFFICIENCY & RENEWABLE ENERGY
Energy Burdens across the US In states with 2009 IECC or worse, over 65% of LMI households live in an energy-burdened county (energy costs greater than 6% of AMI).
•LMI (low-to-moderate income): household income 0-80% area median
• Energy burden = 𝑒𝑒𝑒𝑒𝑒𝑒𝑒𝑒𝑒𝑒𝑒𝑒 𝑐𝑐𝑐𝑐𝑐𝑐𝑐𝑐𝑐𝑐
ℎ𝑐𝑐𝑜𝑜𝑐𝑐𝑒𝑒ℎ𝑐𝑐𝑜𝑜𝑜𝑜 𝑖𝑖𝑒𝑒𝑐𝑐𝑐𝑐𝑖𝑖𝑒𝑒
• Persistent poverty county- counties that have poverty rates 20% or greater for at least 30 years Data: BECP State Energy Code Adoption Maps, NREL Solar for All map
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23U.S. DEPARTMENT OF ENERGY OFFICE OF ENERGY EFFICIENCY & RENEWABLE ENERGY
Model Energy Codes: Looking to the Future
Trajectory to ZER x 2030
2021 IECC(estimated)
SOURCE: PNNL Feasibility Study (publication pending)
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24U.S. DEPARTMENT OF ENERGY OFFICE OF ENERGY EFFICIENCY & RENEWABLE ENERGY
FUTRE OF ENERGY CODES WORKSHOPDOE Bui ld ing Energy Codes Program
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25U.S. DEPARTMENT OF ENERGY OFFICE OF ENERGY EFFICIENCY & RENEWABLE ENERGY
Future of Energy Codes Workshop
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26U.S. DEPARTMENT OF ENERGY OFFICE OF ENERGY EFFICIENCY & RENEWABLE ENERGY
Future of Energy Codes Workshop
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27U.S. DEPARTMENT OF ENERGY OFFICE OF ENERGY EFFICIENCY & RENEWABLE ENERGY
Future of Energy Codes Workshop
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28U.S. DEPARTMENT OF ENERGY OFFICE OF ENERGY EFFICIENCY & RENEWABLE ENERGY
Future of Energy Codes Workshop
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29U.S. DEPARTMENT OF ENERGY OFFICE OF ENERGY EFFICIENCY & RENEWABLE ENERGY
Future of Energy Codes Workshop
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30U.S. DEPARTMENT OF ENERGY OFFICE OF ENERGY EFFICIENCY & RENEWABLE ENERGY
Future of Energy Codes Workshop
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31U.S. DEPARTMENT OF ENERGY OFFICE OF ENERGY EFFICIENCY & RENEWABLE ENERGY
Future of Energy Codes Workshop
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JEREMY WILLIAMS
Building Technologies OfficeU.S. Department of Energy