Zero Net Energy: Cost Effective Solutions

Zero Net Energy: Cost Effective Solutions

JANUARY 20, 2016 || 10:00AM – 11:00 AM

Presenters: Jon Webb || KEPHART, Denver, CO

Steve Easley || Steve Easley & Associates, Danville, CA

Ann Edminster || Design AVEnues LLC, Pacifica, CA

Gene Myers || Thrive Home Builders, Denver, CO

Session Description

Many residential codes and ratings today are based on the goal of minimizing energy use. Some codes are going beyond simply minimizing though, so it’s important to be prepared. In this advanced session, our highly-informed and passionate panel will describe the cost-effective approaches they’ve developed to help single family builders achieve zero net energy (NZE) homes as painlessly as possible, and how you can, too, regardless of where in the country you are building.

Learning OutcomesAnalyze key elements of successful ZNE design and construction that can be incorporated today to differentiate your homes from the competition.

Discuss ZNE standards currently being adopted, providing advance insight into codes likely to spread throughout the U.S. in years to come.

Review illustrated examples of recommendations developed for production builders to cost-effectively adapt their existing designs to meet ZNE requirements.

Explore why organizational capacity-building, and not adoption of risky new technologies, is the key to an effective transition to achieving ZNE.

American Institute of Architects (AIA) Continuing Professional Education

Credit(s) earned on completion of this course will be reported to AIA CES for AIA members upon completion of the AIA/CES Session Participation Forms found in the back of this session room and online at www.BuildersShow.com. Certificates of Completion for both AIA members and non-AIA members are available upon request.

This course is registered with AIA CES for continuing professional education. As such, it does not include content that may be deemed or construed to be an approval or endorsement by the AIA of any material of construction or any method or manner of handling, using, distributing, or dealing in any material or product.

Questions related to specific materials, methods, and services will be addressed at the conclusion of this presentation.

Part 1 – Steve Easley:Smart Planning & Easy Tips to Create Cost Efficient Zero Energy Homes

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Smart Planning & Easy Tips to Create Cost Efficient Zero Energy Homes

Not only are these 60 panels near vertical…..

They Face North...

North

33% Homes Sold in 2014 Were HERS Rated

Copyright Steve Easley, 2015

Integrated Design


Design, installation and measurement of performance is critical!

Top 8 reasons Homes Don’t Perform as Expected

High window to wall area ratio

Non-code compliant glazing choices

High framing factor, thermal bridging

Ineffective air barrier system

Poorly installed insulation

Focus is primarily on cavities

Poorly designed/installed HVAC

DHWH & Lighting is an afterthought

Knee wall Demonstration


R-11 perfect R-19 poor R-13 perfect

No InsulationR 1.78


Is this wall really R-20.5?


Impact of Windows

Courtesy fp innovationsCopyright Steve Easley, 2014

http://www.fpinovations.ca/

Heat LossHeat Gain

Daylight Infiltration

Thermal Bridging Exterior


SCE - ZNE Homes Series - Part 3

Air Leakage


Can-Less Down Lights


Focus On

Envelope/enclosure

Installation of insulation, air sealing & testing

Glass ratios

Advanced framing

HVAC

Design and ducts in conditioned space

measured performance

Lighting

Plug loads

Aren't you hot in that suit?

Part 2 – Ann Edminster:What’s the story with Zero Energy Homes?

407 projects3,331

buildings6,074 units

… and counting!

ZER

O E

NER

GY

is G

RO

WIN

Gan

d in

man

y C

LIM

ATE

ZON

ES

http://netzeroenergycoalition.com/ zero-energy-case-studies/

WH

ERE

ZER

O E

NER

GY

is

happ

enin

g FA

STES

T

ZERO ENERGY is GLOBALEUROPE (Norway)

ASIA (Japan)

AFRICA (Nigeria)SOUTH AMERICA (Brazil)

FortZED, Ft. Collins, CO

Fujisawa Sustainable Smart Town, Japan

ZERO ENERGY is happening at COMMUNITY SCALE

Pecan Street, Austin, TX

Lancaster, CA

Zero Energy Ready42%

Thousand Home Chal-

lenge 17%

Zero Energy

26%

Net Pro-

ducer16%

FLAVORS of ZERO Residential CategoriesNet Zero Energy Coalition developed working with:

• DOE Zero Energy Ready Homes Program

• Northeast Sustainable Energy Association

• International Living Future Institute

• Earth Advantage Institute• Passive House

• PHIUS• PHCA• NAPHN

• Thousand Home Challenge

MULTI- and SINGLE-FAMILY

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Multifamily Units Single Family Units0

500

1000

1500

2000

2500

3000

3500

3,103 2,971

Arkin-Tilt Architects

Redwood Energy

CUSTOM

HKS/Hill-Glazier Studios – Courtesy Blake Marvin

Daniel Smith & Associates Architects Steve Baczek Architect

reKU Design

One Sky Homes

The Paul Davis Partnership

Greenhill Contracting

SPEC & PRODUCTION

Brightleaf Homes

AFFORDABLE

John Schlesinger, AIA

K. Boodjeh Architects

Sunroc Builders

ZERO ENERGY Trait #1: Proper Orientation

ZERO ENERGY Trait #2: Simpler Form(especially roofs!)

John Schlesinger, AIA

WEST: before after SOUTH: before after

• More room for photovoltaics• Easier (& less expensive) to detail• Easier to air seal & insulate

ZERO ENERGY Trait #3: Quality EnclosuresWALLS:1” rigid (R-4)spray-filled cavity (R-15)

WINDOWS:Increased overhangsU-factor 0.27SHGC 0.22

ROOFS:R-49 attic insulationRaised-heel trusses

ZERO ENERGY Trait #4: Small HVAC, in conditioned space

befo

re

afte

r

HVAC in

closet

HVAC

in attic

Part 3 – Gene Myers:The Zero Energy Experience of Thrive Home Builders, Denver, CO

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Thrive Home Builders, Denver, CO

•We build exclusively in the Denver metro Area.

•We closed about 110 homes in 2015.

•We are a niche builder:

Efficient, Healthy, Local

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Recent Recognition

•2015 IBS Best in Green, Production Builder

•2015 Best Green Design, The Nationals 2015

•Green Home of the Year, Green Builder

Thrive is a US Department of EnergyZero Energy Ready Home (ZERH) builder

ZERH Program: •Energy Star

•EPA Indoor AirPlus

•Water Conservation

Three time winner DOE Grand Award for Innovation in Housing

2013, 2014, 2015

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Thrive Builds About 30 Production Zero Energy Homes per Year

ZEN Series•ZEN stands for Zero Energy Now

•Introduced in 2013

•HERS 40 without Solar; HERS <10 with 7-8kW PV

•3 two-story single family plans with basements, 1878-2115 sf

•Base prices $472,900 to $491,900

Selling Zero Energy—The “Last Mile”

•Third-party verification—DOE ZERH Program.

•In order for consumers to believe, a credible third-party endorsement is essential.

•Program marketing resources provide well-researched, professional, credible and FREE marketing material.


•Who is the audience for your messaging?

•35 year old woman who drives a Prius, shops and Whole Foods and has “Boulder-like” tendencies.

Third-party verification

In order for consumers to believe, a credible third-party endorsement is essential.

Use the program’s marketing resources.


•Industry partner resources.

•Our partnership with Owens Corning was essential in bringing “Big Company” resources to meet our marketing challenge.

ZEN Building Science Center—The Power of Zero

•Located in first model home’s garage.

•Shoppers must go through in order to get to the second model.

•Targeted messaging to 35 year old woman who drives a Prius, shops at Whole Foods and has “Boulder-like tendencies.”


If I told you that if you gave me $100 I would give you $300 back, would you take it?Every month?

For 30 years?

That is a lot of money…maybe your child’s college education.


Or buy more home with the savings.


http://energy.gov/sites/prod/files/2014/10/f18/ba_case_study_newtown_powerofzero_center.pdf

Building America Case Study on our Building Science Center

DOE Case Study

Questions?

Jon WebbKEPHART

303.832.44742555 Walnut StreetDenver, CO 80205

Steve EasleySteve Easley & Assoc.925.698.4726

Danville, CA(San Francisco Bay Area)[email protected]

Ann EdminsterDesign AVEnues LLC

650.355.9150Pacifica, CA(San Francisco Bay Area)

Gene MyersThrive Home Builders

303.707.4400185 Lawrence, #900Denver, CO 80202

Zero Net Energy: Cost Effective Solutions

Real Estate

Transcript of Zero Net Energy: Cost Effective Solutions