tools & resources for decisionmakers, designers,...

TOOLS & RESOURCES FOR DECISIONMAKERS, DESIGNERS,

OWNERS, POLICYMAKERS, & CHAMPIONS

Frequently Asked Questions, Design Fundamentals, Project Profi les,

& Resources for More Information

Companion Guide to Zero Net Energy in CAZNE

Utilities

& Champions

Architec

ts & Engineer

s

Policymake

rs & Local

Governments

Commercial

Building Owners & Opera

tors

Schools & Public

Building Owners

General P

ublic

Media

ZNE Companion Guide ContentsZNE Frequently Asked Questions (FAQs) ZNE Terms & Considerations (coming soon) ZNE Resources for More Information ZNE Design Fundamentals ZNE for Architects & Engineers ZNE for Building Owners & Operators ZNE for Policymakers & Local Governments ZNE for Decisionmakers of Schools & Public Buildings

Additional Resources in the Communication ToolkitZNE Case Studies ZNE Messaging Platform ZNE Sample Presentation ZNE Outreach & Education Plan

Primary AudienceKEY: Secondary Audience

ABOUT THE TOOLKITThe Toolkit fact sheets, message plat-form and presentation template were developed by Resource Media and New Buildings Institute with the gener-ous support of foundation funding to advance zero energy building goals in California.

Reuse of this content is welcome to be broadly distributed (with proper citation of copyright by NBI and the ZNE Communi-cations Toolkit).

INTRODUCTIONThe following ZNE Companion Guide contains a set of Zero Net Energy (ZNE)-related fact sheets which are part of a larger suite of resources known collectively as the ZNE Communications Toolkit. The Toolkit and associated resources have been developed to help address commonly asked questions, provide consistent messaging around ZNE, and support advocates in advancing the Path to Zero Campaign for achieving the state of California’s “Big Bold Goals” for ZNE.

Companion Guideto Zero Net Energy in CAZNE

HOW TO USE THE ZNE TOOLKIT & COMPANION GUIDEThe fact sheets and other resources in the Communications Toolkit are intended to ed-ucate and provide outreach to key audiences that can help advance policies and build-ings to achieve ZNE. The following matrix provides a reference for communications most applicable to these specifi c audiences and likely user groups. Many of these tools can stand alone, be shared as a complete set, or as selected pieces of inter-related content. These resources can be used to help accelerate market adoption with consistent media messaging, educate key audiences about the fundamentals of ZNE, and help mitigate market barriers with evidence that ZNE is achievable and makes sense for business, schools, and public buildings now. To download the ZNE Companion Guide or components of the ZNE Toolkit visit the New Buildings Insititute website at: www.newbuildings.org/zero-energy.

California’s

Big Bold Goals for ZNE

100% new residential

by 2020

100% new commercial

&

50% existing commercial

by 2030

TOOLKIT CONTENTS& KEY AUDIENCES

ZNEA ZNE building produces as much energy as it consumes over the course of a year

page 1 of 4

Q1 / WHAT IS A ZERO NET ENERGY BUILDING?

A zero net energy building produces as much energy as it consumes over the course of a year. These buildings achieve ZNE first through high levels of energy efficiency, and then through the addition of onsite renewable power generation.

Q2 / ARE ZNE BUILDINGS FEASIBLE? Yes. While the market share of ZNE buildings is still small, there are numerous examples around the country, built by a variety of design teams and developers, across many different residential and commercial building types.

Zero net energy building projects are located in most U.S. climates. Mild climates—like those in California—certainly help make zero energy buildings more easily achievable, but successful projects have also been completed in the harsher climates of Minnesota, Massachusetts, and New York.

ZNE performance is frequently an added feature of LEED Gold and Platinum buildings that already have a strong energy efficiency design.

Q3 / WHAT ARE THE BENEFITS OF ZNE BUILDINGS?

• ZNE buildings and homes are higher performing, offering superior comfort and healthier places to work and live. Because ZNE buildings use passive strategies such as natural ventilation and daylighting, they are more resilient to the impacts of climate change and are also less vulnerable to the instability of energy prices.

• California’s homeowners and businesses will pay less for energy—money they can spend to grow the company or pay for necessities.

• Investment in ZNE practices and technologies creates local jobs and new products that can be exported worldwide, strengthens local economies, and helps us gain control of our energy future.

• Pursuit of ZNE means California’s economy will be stronger and we will continue to lead the rest of the nation in clean energy.

Q4 / WHY IS IT IMPORTANT TO MAKE BUILDINGS ZNE?

Energy efficiency improvements in design and operations substantially reduce the costs and environmental impacts associated with buildings. The energy used in buildings is the second largest contributor to California’s greenhouse gas (GHG) emissions.

ZNE buildings are an important strategy to help reduce GHG emissions to 1990 levels by 2020, a requirement of California’s Global Warming Solutions Act of 2006. With rising energy costs, and increasing climate-related impacts and natural disasters, ZNE buildings help reduce our demand for energy and provide more resilience to climate impacts.

DPR Construction | San Diego, CA Photo: David Hewitt

Frequently Asked Questions

ZNE FAQ | page 2 of 4

Q5 / WHAT IS CALIFORNIA DOING TO ADVANCE ZERO ENERGY BUILDINGS?

To date, California has more ZNE buildings than any other state in the nation. The state is continuing its leadership by:

• Setting bold goals to achieve ZNE by 2020 for all new residential buildings and by 2030 for all new commercial (and 50% of existing commercial) structures.

Q7 / WHAT IF I HAVE LIMITED SPACE ONSITE FOR RENEWABLES?

Even on the most energy efficient buildings, limited rooftop space on high-rise structures and shading from adjacent buildings means that ZNE buildings with solar photovolta-ics (PVs) onsite may not be practical at this time in urban cores. In the future, new and emerging building-integrated PV products offer an innovative solution that could help address limitations of roof space for siting renewable generation. Alternatively, another class of ZNE may allow these buildings to achieve zero status. ZNE Capable refers to buildings that are as energy efficient as ZNE buildings but don’t have PV onsite. These buildings could access renewable generation from a community-scale project located elsewhere or purchase renewable energy from the local utility.

• Aligning codes with ZNE to achieve 2020 and 2030 targets.

• Providing technical assistance and incentives for owners and design teams (e.g., through programs like “Savings by Design”).

• Demonstrating ZNE leadership in State buildings per Governor Jerry Brown’s Executive Order B-18-12, which requires 50% of new State buildings to be ZNE by 2020 and all new State buildings to be ZNE by 2025.

• Investing in new technologies and research for increased energy efficiency.

Q6 / DOES ZERO NET ENERGY MEAN ALL FUELS OR ELECTRIC ONLY?

To meet the definition of a California ZNE building all fuels—gas and electric—must be offset through renewables to be truly zero energy.

Some definitions refer to ZNE electric buildings which do not offset direct use of gas or other fossil fuels. Alternatively, other definitions preclude the use of any combustion fuel at all.

Exploratorium | San Francisco, CA Photo: Esther Kutnick

David and Lucile Packard Foundation | Los Altos, CA Photo: Jeremy Bitterman

The Bullitt Center | Seattle, WA Photo: Bullitt Foundation


Q8 / HOW DO I CREATE A ZNE BUILDING?Achieving ZNE requires a combination of best practice energy efficiency and renewable energy production. Designing for high energy performance is the first step and requires establishing a goal at the beginning of the project and working under an “Integrated Design Process.” Design teams must:

1) Reduce the amount of energy a building uses through the most efficient envelope strategies and application of highly energy efficient technologies including light-ing, HVAC and controls. Proper siting to take advan-tage of passive cooling is also important.

2) Install renewable generation onsite to meet the remaining energy needs of the building. Installed renewable resources have been primarily solar photovoltaic panels.

3) Optimize the way the building actually operates and how people use it, including management of plugged-in devices and system controls. Work with occupants and tenants to ensure they understand ZNE goals and how to maintain low energy use.

Q9 / HOW EFFICIENT ARE TYPICAL ZNE OR ZNE-CAPABLE BUILDINGS?

Energy efficiency should be the first and largest step toward ZNE. The exact targets vary by building type and climate, but generally buildings should use about one-third of the energy of typical existing commercial buildings– about 30 kBtus or less per square foot. The best examples are closer to 20 kBtus per square foot. Generally, for single-family residential buildings the energy use intensity (EUI) for ZNE performance is typically between 11-17 kBtus per square foot.

Q10 / WHAT ARE THE ADDITIONAL COSTS TO BUILD FOR ZNE PERFORMANCE?

There are examples of commercial buildings achieving ZNE (or near ZNE) at little or no additional cost. Low-cost examples are usually due to trade-offs made by the project team during the integrated design process.

Several studies have found the incremental cost of ZNE buildings to be in the range of 0-15% more than conven-tional construction costs. This incremental cost is for design and construction only, and does not consider the life-cycle cost savings of lower energy costs to operate the building over time.

Chartwell School | Seaside, CA Photo: Chartwell School

Bacon Street offices of Hanna Gabriel Wells | San Diego, CA Photo: Michael Auda

Energy Upgrade California® is a program of the California Public Utilities Commission in collaboration with the California Energy Commission, California counties, cities, nonprofit organizations, and the state’s investor-owned utilities. Funding comes from the utilities’ ratepayers under the auspices of the California Public Utilities Commission in addition to incremental funding from the Department of Energy. Trademarks are property of their respective owners. All rights reserved.

Administered by California utilities, Savings By Design encourages high-performance, non-residential building design and construction, and a variety of solutions to building owners and design teams. More information at: savingsbydesign.com.

Produced by New Buildings Institute. For more information, visit www.newbuildings.org.

Non-commercial reproduction of this content or use in other materials is allowed. Please cite as: “California ZNE Communications Toolkit, July 2013”

Rooftop of the IDeAs Z2 Design Facility | San Jose, CA Photo: David Wakely

IDeAs Z2 Design Facility | San Jose, CA Photo: David Wakely

Q11 / DOES ZNE = A ZERO ENERGY UTILITY BILL?

Probably not. The “net” in zero net energy means that sometimes a building will draw energy from the grid when renewable generation is low and other times it will return energy to the grid when it generates more than is used. There are also ongoing charges for maintenance of trans-mission and distribution lines beyond the cost of energy.

Q12 / HOW DO I KNOW IF MY BUILDING HAS ACHIEVED ZNE PERFORMANCE?

Metered data will tell an owner if the building has met a ZNE standard–both energy used by the building and generated by the renewable resources. Because ZNE buildings achieve this status over the course of a year, data at full occupancy for 12 consecutive months is required to verify net zero energy use.

Plugged-in devices, proper management of controls and occupant behavior all have a significant and ongoing impact on a building’s energy performance. This means that buildings designed to be ZNE may not be designated ZNE for some time after the doors are officially opened. New Buildings Institute (NBI) verifies ZNE energy performance and maintains a list of ZNE and ZNE-capable buildings. In addition, the International Living Future Institute offers a zero-energy certification as part of its Living Building Challenge.

Q13 / WHERE CAN I LEARN MORE?For more information on ZNE, including case studies, special studies, books, newsletters, blogs and other resources, additional ZNE Communications Toolkit materials, visit: newbuildings.org/zero-energy

Resources for more information:California Public Utilities Commission ZNE Informationwww.cpuc.ca.gov/PUC/energy/Energy+Efficiency/Zero+Net+En-ergy+Buildings.htm

New Buildings Institute ZNE Resourceshttp://newbuildings.org/zero-net-energy-resources



Non-commercial reproduction of this content or use in other materials is allowed. Please cite the source as: “California ZNE Communications Toolkit, July 2013”

page 1 of 2

General ZNE ResourcesZNE Action Bulletin | newbuildings.org/zne-action-bulletin-0Electronic newsletter produced by New Buildings Institute, in partnership with the California Public Utilities Commission. It provides information on new research, trainings, innovative buildings, and developments with key strategic efforts in policy and planning.

ZNE Communications Toolkit | newbuildings.org/zne-communications-toolkitTools and resources for ZNE champions, policymakers and loca government staff, designers, commercial owner-operators, and decisionmakers for schools and public buildings. The toolkit includes frequently asked questions, fact sheets strategies for an integrated design process, key communication messages, ZNE case studies, a presentation template, and more.

ZNE Education & Trainings | pge.com/en/mybusiness/ services/training/pec/index.page (click on classes and search on ZNE) PG&E offers ZNE workshops on design for residential and non-residential buildings through its training centers in Stockton and San Francisco.

Architecture at Zero | architectureatzero.comA zero net energy design competition open to students and professionals worldwide, engaging architecture, engineering, planning students and professionals in the pursuit of energy efficient design.

Zero Energy Building Certification — Living Building Challenge | living-future.orgManaged by the International Living Future Institute, the Living Building Challenge is intended to inspire design and construction of zero impact, restorative buildings.

Policy & Program ResourcesCalifornia Long Term Energy Efficiency Strategic Plan | cpuc.ca.gov/PUC/energy/Energy+Efficiency/eespA comprehensive Plan for 2009 to 2020 and an integrated framework of goals and strategies for saving energy.

CPUC ZNE Commercial Action Plan | cpuc.ca.gov/PUC/energy/Energy+Efficiency/eespZNE Commercial Action Plan developed by the California Public Utilities Commission to help achieve the strategic plan goals and engage industry leaders, relevant agencies, stakeholders, utilities and other influencers, including sustainable homes and businesses.

California’s Savings by Design program | savingsbydesign.comA program providing support for buildings that achieve at least 40% energy savings above Title 24 code. This includes support for design teams, help with additional modeling, assistance with technical resources, and commercial and residential ZNE seminars.

PG&E ZNE Pilot Program | pge.com/myhome/saveenergy money/energysavingprograms/znepilotprogramZero Net Energy Pilot Program promoting California’s long term energy goals through a portfolio of research, development, and demonstration projects around ZNE buildings together with complementary education, outreach and information activities.

California ZNE Homes 2020 Planning and Information Website | californiaznehomes.comThe Energy Division of the California Public Utility Commission (CPUC) is currently creating a ZNE Residential 2020 Vision Framework to help meet the state’s ZNE residential building goals. This website is designed to facilitate stakeholder involvement in that effort and provide resources to key audiences.

Governor’s Executive Order for ZNE State Buildings | gov.ca.gov/news.php?id=17508

Resources for More Information

ZNEA ZNE building produces as much energy as it

consumes over the course of a year


Schools & Public Buildings

page 1 of 2

K-12 schools, colleges and public buildings represent key opportunities for local governments to lead on zero net energy policies and practices. As local examples of the feasibility and benefits of ZNE increase, schools and public buildings can educate the broader public about sustainability, green building, and show a commitment to reducing climate impacts.

ZNE performance in these buildings means not only are they less vulnerable to the instability of energy prices, but also more resilient to the impacts of severe weather events. These ZNE buildings can also create safe havens for the community during emergencies as places where the power stays on because these buildings have the ability to generate their own energy.

Many schools have already become leaders in energy efficiency by renovating or building new high performance schools through participation in the Coalition for High Performance Schools (CHPS) program. CHPS is leading a national movement to improve student performance and the entire educational experience by building the best possible schools. Now, further leadership is coming from the California governor’s office through an executive order directing all new state buildings to achieve zero energy building status by 2025.

“ The public sector has a responsibility to lead.”Roadmap to Zero Energy Public Buildings, a report by the Northeast Energy Efficiency Partnership (NEEP)

Marin Country Day School Corte Madera, CA (Photo: Michael David Rose)

Chartwell School Seaside, CA

(Photo: Michael David Rose)

ZNE schools and public buildings have lower operating costs, and over time, save money in energy bills that can be spent on services and programs.Kentucky’s Turkey Foot Middle School was rebuilt as a ZNE school, and now uses 60% less energy than the traditional American middle school.

Turkey Foot Middle School Comparison 2011–2012 Savings of $56,396

Old Turkey Foot

New Turkey Foot Difference

Square Footage 66,523 133,000 199.9%

Annual Energy Cost $94,954 $38,558 59.4%

EUI (kBtu/SF) 79.2 13.6 82.8%




page 1 of 4

Q1 / WHAT IS A ZERO NET ENERGY BUILDING?

A zero net energy building produces as much energy as it consumes over the course of a year. These buildings achieve ZNE first through high levels of energy efficiency, and then through the addition of on-site renewable power generation.

Q2 / ARE ZNE BUILDINGS FEASIBLE? Yes. While the market share of ZNE buildings is still small, there are numerous examples around the country, built by a variety of design teams and developers, across many different residential and commercial building types.

Zero net energy building projects are located in most U.S. climates. Mild climates—like those in California—certainly help make zero energy buildings more easily achievable, but successful projects have also been completed in the harsher climates of Minnesota, Massachusetts, and New York.

ZNE performance is frequently an added feature of LEED Gold and Platinum buildings that already have a strong energy efficiency design.

Q3 / WHAT ARE THE BENEFITS OF ZNE BUILDINGS?

• ZNE buildings and homes are higher performing, offering superior comfort and healthier places to work and live. Because ZNE buildings use passive strategies such as natural ventilation and daylighting, they are more resilient to the impacts of climate change, they are also less vulnerable to the instability of energy prices.

• California’s homeowners and businesses will pay less for energy—money they can spend to grow the company or pay for necessities.

• Investment in ZNE practices and technologies creates local jobs and new products that can be exported world-wide, strengthens local economies, and helps us gain control of our energy future.

• Pursuit of ZNE means California’s economy will be stronger and we will continue to lead the rest of the nation in clean energy.

Q4 / WHY IS IT IMPORTANT TO MAKE BUILDINGS ZNE?

Energy efficiency improvements in design and operations substantially reduce the costs and environmental impacts associated with buildings. The energy used in buildings is the second largest contributor to California’s greenhouse gas (GHG) emissions.

ZNE buildings are an important strategy to help reduce GHG emissions to 1990 levels by 2020, a requirement of California’s Global Warming Solutions Act of 2006. With rising energy costs, and increasing climate-related impacts and natural disasters, ZNE buildings help reduce our demand for energy and provide more resilience to climate impacts.

DPR Construction San Diego, CA

Frequently Asked Questions

http://newbuildings.org/zne-action-bulletin-0

http://newbuildings.org/zne-communications-toolkit

http://pge.com/en/mybusiness/services/training/pec/index.page

http://architectureatzero.com

http://living-future.org

http://cpuc.ca.gov/PUC/energy/Energy+Efficiency/eesp

http://cpuc.ca.gov/PUC/energy/Energy+Efficiency/eesp

http://savingsbydesign.com

http://pge.com/myhome/saveenergy money/energysavingprograms/znepilotprogram

http://pge.com/myhome/saveenergy money/energysavingprograms/znepilotprogram

http://californiaznehomes.com

http://gov.ca.gov/news.php?id=17508

ZNE Resources | page 2 of 3

ICLEI-Local Governments for Sustainability | icleiusa.org

California green building programs and benchmarking ordinances — Exceeding the 2008 Building Energy Efficiency Standards | energy.ca.gov/title24/ 2008standards/ordinances/index.html

School Resources Coalition for High Performance Schools | chps.net

NEEP Roadmap for Zero Net Energy Buildings Northeast Energy Efficiency Partnership | neep.org/ZeroNetEnergy

Sustainability Tools for Assessing & Rating (STAR) Communities | starcommunities.org

Design ResourcesEnergy Design Resources | energydesignresources.com

Advanced Building | advancedbuildings.net

Savings by Design | savingsbydesign.com

Integrated Design – The best path to highly efficient buildings | designsynthesis.betterbricks.com

Whole Building Design Guide – Engage the Integrated Design Process | wbdg.org/design/engage_process.php

AIA Integrated Project Delivery: A Guide | betterbricks.com/

Plug Load Best Practices Guide | newbuildings.org/plug-load-best-practices-guidePlug loads can be managed through low- and no-cost measures that are relatively straightforward to implement. This Guide shows how simple changes can cut costs and save energy in offices.

Vancouver Integrated Design | metrovancouver.org/ services/wastewater/engagement/LionsGate/ResourceDocs/2012-09-10-Workshop1-Summary.pdf

BooksNet Zero Energy Design: A Guide for Commercial Architecture | Tom Hootman, 2012. A guide on how to design and build net zero commercial buildings, this book includes practical strategies, step-by-step technical analysis, case studies, and integrated design approaches.

Toward a Zero Energy Home: A Complete Guide to Energy Self-Sufficiency at Home | David Johnston and Scott Gibson. A book exploring the design and construction of self-sufficient houses, cites climate and geographic challenges, describe exactly how to go about building an energy-efficient home, and features ten houses that were built for zero energy living.

Two Degrees: The Built Environment and Our Changing Climate | Alisdair McGregor, Cole Roberts, and Fiona Cousins, 2012. A book explaining how we can set practical steps to reduce the extent of global warming and to adapt to climate changes, including zero energy and zero carbon approaches for new construction and existing buildings.

Special StudiesCalifornia Zero Net Energy Cost Study | Davis Energy Group, December 2012. A study exploring the cost-effectiveness of ZNE buildings in the current residential and commercial marketplace through a review of literature, case studies, and interviews with ZNE experts familiar with residential, commercial, and community-scale projects.

Getting to Zero 2014 Status Update: A look at the projects, policies and programs driving zero net energy performance | New Buildings Institute, 2014. newbuildings.org/sites/default/files/2014_Getting_to_Zero_Update.pdf Report presenting information on characteristics, incremental costs, and design features of zero energy buildings (ZEBs) and finds that zero energy buildings are achievable and feasible for some building types with current technologies and at incremental costs for increased efficiencies.

The Road to ZNE: Mapping Pathways to ZNE Buildings in California | Heschong Mahone Group, December 2012. A policy and market inquiry on pathways forward to achieve California’s 2020 and 2030 ZNE goals.

The Technical Feasibility of Zero Net Energy Buildings in California | ARUP, January 2013. A study examining the technical feasibility of zero net energy buildings for various building types, and specific to California climates.

http://icleiusa.org

http://energy.ca.gov/title24/2008standards/ordinances/index.html

http://energy.ca.gov/title24/2008standards/ordinances/index.html

http://chps.net

http://www.neep.org/ZeroNetEnergy

http://starcommunities.org

http://energydesignresources.com

http://advancedbuildings.net

http://savingsbydesign.com

http://designsynthesis.betterbricks.com

http://wbdg.org/design/engage_process.php

http://betterbricks.com/

http://newbuildings.org/plug-load-best-practices-guide

http://metrovancouver.org/services/wastewater/engagement/LionsGate/ResourceDocs/2012-09-10-Workshop1-Summary.pdf



http://newbuildings.org/sites/default/files/2014_Getting_to_Zero_Update.pdf



Zero and Net Zero Energy Buildings + Homes | Building Design + Construction, March 2011. bdcnetwork.com/article/2011-zero-and-net-zero- energy-buildings-homes. A white paper examining definitional issues and case studies lessons, describes proven building technologies, analyzes the business case for ZNE, looks at developing performance-based codes, and provides an action plan to advance ZNE and resources for more information.

The Power of Zero Optimizing Value For Next Generation Green | issuu.com/bnim/docs/the_power_of_zero_-_final/1Report uses statistical analyses and anecdotal assessments of actual projects, comparing costs for specific systems, as well as overall construction costs of the greenest projects, using Net Zero, LBC, COTE Top Ten, and Architecture 2030 standards to quantify performance, against industry standard projects.

Cost Control Strategies for Zero Energy Buildings: High-Performance Design and Construction on a Budget | buildingdata.energy.gov/cbrd/resource/1655Guide assembles recommendations for replicating specific successes of early adopters who have met their energy goals while controlling costs. Contents include: discussion of recommended cost control strategies, which are grouped by project phase (acquisition and delivery, design, and construction) and accompanied by industry examples; recommendations for balancing key decision-making factors; and quick reference tables that can help teams apply strategies to specific projects.

Zero Energy Commercial Buildings Consortium | zeroenergycbc.org/resources/cbc-reportsPublic/private consortium of commercial building stakeholders working with the U.S. Department of Energy (DOE), to develop and deliver technology, policies, and practices to achieve sector-wide market transformation. Several zero energy related reports are available on their website.

Case StudiesCalifornia ZNE Case Study Briefs | newbuildings.org/zero-energy

ZNE & Zero Energy Capable Buildings | advancedbuildings.net/net-zero-case-studies

Department of Energy High Performance Buildings Database | eere.buildinggreen.comThe High Performance Buildings Database is research sponsored by the U.S. Department of Energy that seeks to improve building performance measuring methods by collecting data on various factors that affect a building’s performance, such as energy, materials, and land use.

New Buildings Institute’s Getting to Zero Buildings Database | newbuildings.org/getting-to-zero-buildings-databaseHere you will find in-depth information about high performance buildings across the United States, Canada, and beyond. The database includes information on measured and modeled energy performance, environmental characteristics, design process, finances, and other aspects of each project.

ZNE Resources | page 3 of 3





http://bdcnetwork.com/article/2011-zero-and-net-zero-energy-buildings-homes

http://bdcnetwork.com/article/2011-zero-and-net-zero-energy-buildings-homes

http://issuu.com/bnim/docs/the_power_of_zero_-_final/1

http://issuu.com/bnim/docs/the_power_of_zero_-_final/1

http://buildingdata.energy.gov/cbrd/resource/1655

http://zeroenergycbc.org/resources/cbc-reports

http://newbuildings.org/zero-energy

http://advancedbuildings.net/net-zero-case-studies

http://advancedbuildings.net/net-zero-case-studies

http://eere.buildinggreen.com

http://newbuildings.org/getting-to-zero-buildings-database


Design Fundamentals

page 1 of 2

Integrated Design and Advanced Technologies = High Performance

Achieving a zero net energy (ZNE) goal for any new commer-cial construction or deep renovation project requires a commitment by the design team to a fully integrated process where the interrelationships between the building and its systems, surroundings and occupants make efficient and effective use of all resources. For example, many of the completed ZNE buildings located in the coastal marine areas of California are able to greatly reduce or even eliminate the need for mechanical cooling by prioritizing natural ventilation as part of their design scheme.

Integrated project delivery involves making all members of the design team aware of the project goals and outcomes including setting energy performance targets such as EUI (energy use intensity) at the onset. It also requires engaging project participants early in the design process, so each member can understand how their role contributes to the greater design of the whole project.

This team-oriented approach ensures the proper design strategies and high performance technologies that are so critical to the outcome of ZNE buildings are selected and implemented in a way that maximizes effectiveness and efficiency.

“ The traditional approach, where the architect designs the building shape, orientation and envelope and then transmits the drawings to the mechanical and electrical engineers for their design, is a sequential approach that misses the rich opportunities for optimizing building performance through a collaborative approach throughout the design process.”Lynn G. Bellenger, P.E. ASHRAE Fellow 2010-2011 ASHRAE President

SYNTHESIS

CLIMATE

BLDG DESIGN

SYSTEMS USE

Climate is often considered a liability. View it instead as a resource

Systems designed to integrate climate and use strategies and are sized to meet optimized loads.

Even small adjustments to

operating schedules,

comfort criteria and use

patterns can make a significant

difference in a building’s energy

consumption.

Design strategies (daylighting, natural ventilation, shading, and others) are related to decision about building site, form, organization, and major materials.

Image courtesy of BetterBricks/NEEA

The Four Major Components of Integrated Design

National Renewable Energy Laboratory | Golden, CO Photo:: Dennis Schroeder, courtesy of NREL/DOE





ZNE Design Fundamentals | page 2 of 2

PROJECT PROFILEDPR Construction Office | San Diego, CA

Taking advantage of San Diego’s mild climate, the DPR Construction office building was designed to use cross and stack ventilation strategies to passively ventilate and cool the open office area. By installing operable windows at the north curtain wall and roof monitors at the south side, the number of hours the HVAC system is used was reduced by 79% a year.

DPR’s concept of “bringing the outside in” was a key component to reducing the building’s energy consumption. Removing suspended ceilings, adding roof monitors and installing Solatube skylights over the work stations gives all employees access to natural daylight and reduces their estimated lighting energy consumption by 53%, or 29,000 kilowatt-hours (kWh) annually.

Photo: David Hewitt

ZNE Design Fundamentals

F1/ HIGH PERFORMANCE SHELL

A high performing building shell needs to consider air tightness, insulation levels, glazing attributes, roof reflectivity, mass and the orientation of the building to sunlight, wind and the elements. Ultimately the shell should help optimize the other building systems.

F2/ HIGH PERFORMANCE LIGHTING & DAYLIGHTING

When combined with daylighting and integrated controls, efficient electric lighting offers significant energy savings due to reduced electric lighting loads—up to 70%, according to some studies. A reduced lighting load can also result in a downsized mechanical cooling system.

F3/ HIGH PERFORMANCE MECHANICAL SYSTEM

Utilize local climate/site resources to offset building energy needs. Once the design team has selected a system, the components specified must be the most cost-effective and efficient available. Consider decoupling the ventilation component from heating and cooling systems.

F4/ HIGH PERFORMANCE CONTROLS

Building controls are critical to integrating multiple high performance systems and recognizing potential energy savings associated with mechanical, lighting and plug load strategies. It is important that all control systems are commissioned to ensure optimal performance.

To reach DPR’s Zero Net Energy goal, a roof-mounted 64 kw-AC photovoltaic (PV) panel system was installed. This system generates enough renewable energy to offset the building’sestimated annual energy consumption. According to their online dashboard, DPR’s total annual energy use for 2011 is about 100,000 kWh offset by 118,000 kwh generated through solar PV’s.

Resources for more information:New Buildings Institute ZNE Resourceshttp://newbuildings.org/zero-net-energy-resources

California Public Utilities Commission ZNE Informationwww.cpuc.ca.gov/PUC/energy/Energy+Efficiency/Zero+Net+Ener-gy+Buildings.htm


Architecture & Engineering

page 1 of 2

The Value of ZNE Expertise As sustainable design practices and goals are more com-monly adopted by the architectural and engineering commu-nities, designing for zero net energy (ZNE) goals offers firms and consultants an opportunity to distinguish themselves from the field.

Demonstrating the expertise needed to create ZNE-level performance signals a proficiency in the advanced technolo-gy application and design strategies needed to achieve this goal. This capability sets you apart from your peers and provides a high value asset to your clients.

Incorporating ZNE expertise into your practice also prepares for future building requirements as California continues to take legislative steps to limit energy use in buildings and enforce carbon emission taxes and penalties.

The State will adopt the next level of efficiency standards (Title 24) in 2014 for all newly constructed buildings as the next step toward achieving its goal of having all new residen-tial construction be ZNE by 2020 and all new commercial by 2030. By committing to ZNE buildings now, you will better position your business to compete in the future.

ZNE Costs Are In Line With Other Green Buildings Commercial buildings cover a broad array of building types, and information on costs is based on a limited number of buildings. However, there are a number of examples of commercial buildings that have achieved ZNE including solar within typical construction costs for their building type. Incremental costs for reported examples range from 0% to 15%.

For example, construction costs at Turkey Foot Middle School in Edgewood, Kentucky, were $204 per square foot compared to the national median of $216 per square foot for new school construction.

Bacon Street Offices | San Diego, CA Photo: Auda-Coudayre Photography / Kessler Photography

Elevate your firm above the rest by delivering buildings that combine the highest architectural, mechanical, and environmental performance.

Embrace the market opportunities presented by ZNE and push high performance design into the mainstream. The technologies and design strategies needed to create ZNE buildings are available today.

Establish your expertise and capacity for innovative design and development solutions that meet the highest standards for performance and energy savings.

Provide increased value to your client by delivering a building that has less tenant turnover, generates higher rents and leasing rates, and provides more comfortable, healthy and productive environments in which to live and work.

Benefits of Delivering a ZNE Project





ZNE Architecture & Engineering | page 2 of 2

The Four Major Components of Integrated Design

SYNTHESIS

CLIMATE

BLDG DESIGN

SYSTEMS USE

Climate is often considered a liability. View it instead as a resource

Systems designed to integrate climate and use strategies and are sized to meet optimized loads.

Even small adjustments to

operating schedules,

comfort criteria and use

patterns can make a significant

difference in a building’s energy

consumption.

Design strategies (daylighting, natural ventilation, shading, and others) are related to decision about building site, form, organization, and major materials.

Image courtesy of BetterBricks/NEEA

PROJECT PROFILEIDeAs Z2 Design Facility | San Jose, CA

This 6,560 square-foot building reached zero net energy by renovating a windowless 1960s-era bank building. The project team added skylights, high performance windows, and increased insulation. A radiant heating and cooling system is coupled with a ground-source heat pump and displacement ventilation. Very importantly, extra attention was placed on minimizing plug loads, both through the selection of equipment as well as controls and designing systems to manage internal loads. Lighting is controlled with occupancy sensors and photosensors. A custom control sequence was also implemented to shut off specified circuits when the security system is armed at night. This eliminates phantom loads and ensures equipment is not left on overnight. Photo: David Wakely

The Integrated Design Process: Key to Designing a ZNE BuildingAchieving a ZNE goal for any new construction or deep renovation project requires a commitment by the design team to a fully integrated process and an understanding of how to incorporate readily available, high performance technologies to achieve significant energy load reductions.

By making all members of the design team aware of the project goals and engaging them early in the design process it becomes possible for each member to understand how their role contributes to the greater design of the whole project. This team-oriented approach will ensure the proper design strategies are selected for the varying California climates and that the most appropriate high performance technologies critical to the outcome of ZNE buildings are selected and installed.

Resources for more information:California Public Utilities Commission ZNE Informationwww.cpuc.ca.gov/PUC/energy/Energy+Efficiency/Zero+Net+Ener-gy+Buildings.htm



Facts for Commercial Building Operators & Owners

page 1 of 2

Fact 1 ZERO NET ENERGY STANDARDS FOR BUILDINGS ARE COMING IN CALIFORNIA.

California has set a course to achieve zero net energy (ZNE) for all new construction and half of the existing building stock in the next two decades. Owners should begin to prepare for this change and can put themselves in a leading position by moving to a ZNE performance goal now.

Fact 2 ZNE BUILDINGS FOR A NUMBER OF BUILDING TYPES ARE FEASIBLE TODAY.

While the market share of ZNE buildings is still small, it’s growing. ZNE is currently feasible in most multi- and single-family homes, schools, smaller office buildings, libraries and other public assembly-type buildings. There are numerous examples around the country, built by a variety of design teams and developers.

Zero net energy building projects are located in most U.S. climates. While mild climates—like California—certainly help make zero energy buildings more easily achievable, projects have also been successfully completed in the harsher climates of Minnesota, Massachusetts and New York.

Fact 3 INVESTING IN ZNE BUILDING OFFERS MULTIPLE BENEFITS.

Beyond the environmental benefits of reduced carbon and greenhouse gas emissions, ZNE buildings provide substantive business advantages. ZNE performance helps reduce exposure to risk by ensuring that an asset is more resilient, has higher employee and tenant retention, and enjoys higher rents.

ZNE buildings typically rely on more passive strategies such as natural ventilation and daylighting, which means they can be kept cool and interior spaces can be illuminated even when the power is out. They have also demonstrated reduced operating and equipment replacement costs, which can grow the bottom line while providing valuable brand recognition in a competitive building market.

Fact 4 THE COST OF ZNE BUILDINGS IS IN LINE WITH THE COST OF GREEN BUILDINGS.

Commercial buildings cover a broad array of building types, and information on costs is based on a limited number of buildings. However, some commercial buildings have achieved ZNE within typical construction costs for their building type. Achieving ZNE is based on a careful integrated design process focused on a clear energy performance goal. Most reported examples range from 0% to 10% additional costs.

Fact 5 ZNE BUILDINGS ARE THE MARKET’S BEST ENERGY PERFORMERS.

Energy efficiency is the most important step to achieving ZNE energy performance. These buildings use about one-third of the total energy of typical existing commercial buildings—about 30 kBTUs or less per square foot. The best examples are closer to 20 kBTUs per square feet, with numbers varying by building type and climate.

Brentwood Apartments | Edmonton, Alberta, Canada Photo: David Dodge

ZNE for Commercial Building Operators and Owners | page 2 of 2





PROJECT PROFILEBullitt Center | Seattle, WA

The Bullitt Center is a six-story, 50,000-square-foot building in Seattle, and serves as a new model for the way urban buildings are designed, built and operated. A solar array will generate as much electricity as the building uses and rain will supply all necessary water. Wastewater is treated onsite. Other notable features include:

• Energy efficiency 83% greater than a typical Seattle office building

• 242kW photovoltaic array• Ground-source geothermal heat exchange system• Radiant floor heating and cooling system• Retractable external blinds to block heat before it

can warm the building

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5MAKE A ZNE COMMITMENT

Establish ZNE as a key project objective and ensure that this goal is explicit in all project documents (RFQ’s and RFP’s).

WORK AN INTEGRATED PROCESS

A successful ZNE outcome requires a design team that is committed to the fundamentals of the integrated design process from the earliest design phase.

SET PERFORMANCE TARGETS

A ZNE building necessitates the establishment of performance targets and requirements through every phase of the design process in order to verify the impact of key design decisions.

SIGNIFICANTLY REDUCE LOADS

The most critical factor in creating a ZNE building is the maximum reduction of all building loads through the use of passive design strategies and highly efficient technologies.

OPTIMIZE OPERATIONS

Ensure low-energy building operation by implementing monitoring and verification strategies, management of plug loads and engaging tenants in energy efficient behavior through the use of tenant guidelines, green purchasing policies (e.g., for appliances) and or green leases. This increased attention to operations requires a sustained focus and expertise on the part of the building management staff, but it is a critical aspect of achieving ZNE performance.

Key Strategies to Designing a ZNE Building

Denis Hayes, President and CEO of the Bullitt Foundation in front of its ZNE headquarters in Seattle, WA Photo: Seattle Magazine

Resources for more information:California Public Utilities Commissionwww.cpuc.ca.gov/PUC/energy/Energy+Efficiency/Zero+Net+Ener-gy+Buildings.htm




page 1 of 2

K-12 schools, colleges and public buildings represent key opportunities for local governments to lead on zero net energy policies and practices. As local examples of the feasibility and benefits of ZNE increase, schools and public buildings can educate the broader public about sustainability and green building, and show a commitment to reducing climate impacts.

ZNE performance in these buildings means not only are they less vulnerable to the instability of energy prices, but they’re also more resilient to the impacts of severe weather events. These ZNE buildings can also create safe havens for the community during emergencies as places where the power stays on because these buildings have the ability to generate their own energy.



Marin Country Day School | Corte Madera, CA Photo: Michael David Rose

Chartwell School | Seaside, CA Photo: Michael David Rose

ZNE schools and public buildings have lower operating costs and, over time, save money in energy bills that can be spent on services and programs.

Kentucky’s Turkey Foot Middle School was rebuilt as a ZNE school, and now uses 60% less energy than the traditional American middle school.


Old Turkey Foot


Square Footage 66,523 133,000 199.9%


EUI (kBtu/SF) 79.2 13.6 82.8%

ZNE Schools & Public Buildings | page 2 of 2





With energy bills at California’s K-12 public schools totaling more than $1 billion a year, innovative energy solutions like ZNE are an option to put money back into classrooms and bring public buildings into the 21st century. School district leaders and community leaders in California can learn from examples of other schools and public buildings around the country that have managed to go ZNE. Benefits include:

• Heightened student performance & increased average daily attendance

• Better student & teacher health

• Improved teacher satisfaction & retention

• Reduced operating costs

ZNE schools and public buildings are visually and acoustically more comfortable, easy to maintain and operate, and a teaching tool that stimulates learning and innovation.

1 2 3 4 5Set a ZNE commitment with performance goals for your district, campus or building.

Educate decisionmakers, capital projects and planning staff, facility managers and operators about ZNE benefits, costs and performance goals.

Incorporate energy perfor-mance criteria into design, construction and planning contracts (including RFQ’s, RFP’s and other contract-related documents).

Draw inspiration and lessons learned from case studies of other ZNE schools and public buildings in California and nationally.

Take advantage of ZNE incentive programs and technical assistance including the Savings by Design Program and the PG&E ZNE Pilot Program.

What Can Decisionmakers Do to Advance ZNE Schools & Public Buildings?

Chartwell School | Seaside, CA Photo: Michael David Rose

Resource and energy efficient ZNE buildings

improve the quality of education for school

children and university students by providing a

healthy and comfortable indoor environment.

Resources for more information:

California Public Utilities Commission ZNE Information

www.cpuc.ca.gov/PUC/energy/Energy+Efficiency/Zero+Net+Ener-

gy+Buildings.htm

New Buildings Institute ZNE Resources

http://newbuildings.org/zero-net-energy-resources


for Policymakers & Local Governments

page 1 of 2

Advancing ZNE policy means advancing economic development, energy leadership, ingenuity and resilience. Planning for a ZNE future creates practical and achievable energy solutions for residents, and economic and environmental benefits for a city itself.

ZNE Policy Provides Multiple BenefitsJobs, Skills & Economic Development

• Local jobs and tax growth from more local construction

• Higher quality building stock that helps property values

• Skill development and career opportunities for residents

• Attract companies that provide ZNE-related products and services

• Create opportunities for a thriving clean energy industry with products that can be exported worldwide

Energy Independence & Local Resiliency

• Meet energy needs locally, achieve reach codes and sustainability goals

• Local communities become stronger and more resilient during severe weather events and natural disasters

• Increased stability of budgets and protection from uncertainty of changing energy costs.

Health & Productivity

• Support healthier environments and higher productivity with reduced net monthly costs

• Create schools and public buildings with lower operating costs allowing the savings to be used for needed services and programs

A new Salt Lake City Public Safety Building is designed to achieve ZNE. Bond funding for construction was approved by more than 65% of voters.

States, cities and municipalities across the country are integrating zero net energy building into energy policies, codes and standards.

Policymakers are using ZNE as a way to bring public buildings into the 21st century and put money back into classrooms.

ZNE Policymakers and Local Governments | page 2 of 2





Setting Big Bold Goals for ZNE The energy used in buildings accounts for the second largest contribution to California’s greenhouse gas emissions. The California Global Warming Solutions Act of 2006 requires the State to reduce greenhouse gas emissions to 1990 levels by 2020 and beyond. To address these climate and energy- related issues, the California Public Utilities Commission (CPUC) adopted the California Energy Efficiency Strategic Plan in 2008 which sets ambitious goals to achieve zero net energy buildings, including:

• All new residential shall be ZNE by 2020

• 50% of existing commercial shall be ZNE by 2030

• All new commercial shall be ZNE by 2030

Governor Jerry Brown led by example when he signed an executive order (B-18-12) requiring State buildings to reduce consumption and meet the [following] ZNE targets:

• 50% of new State buildings shall be ZNE by 2020

• All new State buildings shall be ZNE by 2025

How is California Working to Achieve ZNE?The California Public Utilities Commission has been working with interested stakeholders to develop ZNE Action Plans for commercial and residential buildings, codes and standards, and research and technology. These plans have helped engage regulators, building designers, energy efficiency

1

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Establish data policies for annual benchmarking and disclosure policies, and aggregate energy use data to set local energy reduction targets.

Set local ZNE goals for your municipality or region (including government and other public buildings).

Create incentives for ZNE (e.g.funding, fast-track permitting, technical assistance, awards, etc.).

Educate planning, development and sustainability staff about ZNE and available incentive programs.

Adopt the CalGreen energy code and align local codes to remove any barriers to ZNE.

Create training for building departments and align-ment of planning, urban design and zoning.

Provide ZNE resources, trainings and other assis-tance for designers, builders, and contractors.

How Can Local Governments Help Move Buildings to ZNE?

California Governor Jerry Brown

experts, environmental nonprofits, and other leaders to advance policy approaches and develop tools. These leaders have also helped clarify definitional issues, advance critical policy, identify technology gaps, and create a Path to Zero outreach and education campaign.

Resources for more information:California Public Utilities Commission ZNE Informationwww.cpuc.ca.gov/PUC/energy/Energy+Efficiency/Zero+Net+Ener-gy+Buildings.htm


ACHIEVEMENT

Zero Net Energy in CA

Introduction


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3

4

5

ZNE Message PlatformKey messages for target audiences on the what and why of ZNE.

“Intro to ZNE” Presentation

Customizable powerpoint presentation provides an overview of California’s goals and policies for ZNE, key strategies, and case study examples.

ZNE Companion Guide/Fact SheetsCollection of FAQs, resources, design strategies, and key messages for designers, commercial building owners, policymakers, and decisionmakers of schools and public buildings.

Case Studies: ZNE & Ultra-Low Energy Buildings Read about ZNE and ultra-low energy build-ing examples, including design strategies, costs, and lessons learned.

ZNE Action BulletinSign up for our quarterly e-newsletter for updates on ZNE news, events, trainings, case studies, planning, policy, and research. To sign up, or to get more info about the toolkit, email [email protected].





page 1 of 2

K-12 schools, colleges and public buildings represent key opportunities for local governments to lead on zero net energy policies and practices. As local examples of the feasibility and benefits of ZNE increase, schools and public buildings can educate the broader public about sustainability, green building, and show a commitment to reducing climate impacts.

ZNE performance in these buildings means not only are they less vulnerable to the instability of energy prices, but also more resilient to the impacts of severe weather events. These ZNE buildings can also create safe havens for the community during emergencies as places where the power stays on because these buildings have the ability to generate their own energy.



Marin Country Day School Corte Madera, CA (Photo: Michael David Rose)

Chartwell School Seaside, CA

(Photo: Michael David Rose)

ZNE schools and public buildings have lower operating costs, and over time, save money in energy bills that can be spent on services and programs.Kentucky’s Turkey Foot Middle School was rebuilt as a ZNE school, and now uses 60% less energy than the traditional American middle school.


Old Turkey Foot


Square Footage 66,523 133,000 199.9%


EUI (kBtu/SF) 79.2 13.6 82.8%




Facts for Commercial Building Operators & Owners

page 1 of 2

F1 / ZERO-NET ENERGY STANDARDS FOR BUILDINGS ARE COMING IN CALIFORNIA.

California has set a course to achieve zero-net energy (ZNE) for all new construction and half of the existing building stock in the next two decades. Owners should begin to prepare for this change and can put themselves in a leading position by moving to a ZNE performance goal now.

F2 / ZNE BUILDINGS FOR A NUMBER OF BUILDING TYPES ARE FEASIBLE TODAY.

While the market share of ZNE buildings is still small, it’s growing. ZNE is currently feasible in most multi- and single-family homes, schools, smaller office buildings, libraries and other public assembly-type buildings. There are numerous examples around the country, built by a variety of design teams and developers.

Zero net energy building projects are located in most U.S. climates. While mild climates—like California— certainly help make zero energy buildings more easily achievable, projects have also been successfully completed in the harsher climates of Minnesota, Massachusetts and New York.

F3 / INVESTING IN ZNE BUILDING OFFERS MULTIPLE BENEFITS.

Beyond the environmental benefits of reduced carbon and greenhouse gas emissions, ZNE buildings provide substantive business advantages. ZNE performanc helps reduce exposure to risk by ensuring that an asset is more resilient, has higher employee and tenant retention, and enjoys higher rents.

ZNE buildings typically rely on more passive strategies such as natural ventilation and daylighting, which means they can be kept cool and interior spaces illuminated even when the power is out. They also have demonstrated reduced operating and equipment replacement costs, which can grow the bottom line while providing valuable brand recognition in a competitive building market.

F4 / THE COST OF ZNE BUILDINGS IS IN LINE WITH THE COST OF GREEN BUILDINGS.

Commercial buildings cover a broad array of building types, and information on costs is based on a limited number of buildings. However, some commercial buildings have achieved ZNE within typical construction costs for their building type. Achieving ZNE is based on a careful integrated design process focused on a clear energy performance goal. Most reported examples range from 0% to 10% additional costs.

Resources & More InformationNet Zero Energy Design: A Guide for Commercial Architecture. | Tom Hootman, 2012

“Getting to Zero 2012 Status Update: A First Look at the Cost and Features of Zero Energy Commercial Buildings” NBI | newbuildings.org/zero-energy

“Zero and Net-Zero Energy Buildings + Homes” (Chapter 4 — Analyzing the Business Case). | bdcnetwork.com/2011-white-paper-zero-and-net-zero-energy-buildings-homes-0

Brentwood Apartments Edmonton, Alberta, Canada (Photo: David Dodge, Green Energy Futures)

REDDING SCHOOL OF THE ARTSRedding School for the Arts in Northern California connects education and arts for K-8 students in a community of 90,000 people. The school was originally created in August 1999 in response to the rapid decline of arts programs in local schools. In 2011, the charter school opened a new facility with an ambitious goal of zero net energy, while dedicating only 2% of the budget to renewable energy systems. In this project, these systems were characterized as photovoltaic solar panels, wind generation and included geothermal bore fields. The two-story, 77,000 square feet building includes classrooms, art rooms, music and dance spaces, a library and information center, a cooking classroom and a technology room.

Planning & Design ApproachOverarching project goals were:

• Use the facility as a teaching tool

• Connect the indoor and outdoor environments to create a series of continuous learning spaces

• Use appropriate solar orientation strategies to maximize daylighting opportunities and take advantage of outside views

• Significantly reduce energy use by locating 39,000 SF of learning space in protected outdoor areas

Energy Efficiency Strategies & FeaturesDaylighting: The design orients classrooms to the north to maximize daylighting with minimal heat and glare. Lighting controls reduce or eliminate electric lighting in response to daylighting to encourage natural light as the primary source of illumination in spaces and ‘learning streets.’

Efficient HVAC: The school utilizes a geothermal HVAC system. Windows are sized and located to provide occupant control and cross air airflow through classrooms.

Site Details

Building Size: 77,000 SF

Location: Redding, California

Construction Type: New

Construction Year: 2011

Building Type: Education

CA Climate Zone: 11

Measured Energy Stats

OVERVIEW

16 - 8 = 8 BUILDING’S TOTAL EUI

RENEWABLE PRODUCTION EUI

BUILDING’S NET EUI

Pho

tos:

Ste

ve W

hitt

aker

Site Energy Use Index (EUI) kBtu/SF/year

The Energy Equation: the building energy use minus the renewables production equals the net energy of the building. Buildings may be ‘Getting to Zero’ and have a net EUI above zero. If renewable production exceeds energy use its net EUI is below zero (negative) and it is creating surplus energy.

Zero Net Energy Project Profile

K-12 School

Project Profile developed by New Buildings Institute ©2013

For more information: newbuildings.org/zero-energy

5 GREAT NEW TOOLS FOR ZNE BUILDINGS

For more information, visit: newbuildings.org/zne-communications-toolkit

http://newbuildings.org/zne-communications-toolkit

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