san mateo county energy watch pacific gas & electric … you to our workshop sponsors! san mateo...
TRANSCRIPT
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Thank you to our workshop sponsors!
San Mateo County Energy Watch
Pacific Gas & Electric
New Buildings Institute
Harley Ellis Devereaux
With support from
the California Public Utilities Commission
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ACHIEVEMENT
May 28, 2015
AGENDA
• Welcome & Introductions
• ZNE Goals & Status of ZNE
• Case Studies & Lessons Learned
• ZNE Planning & Working Sessions
• Building Energy Tour: Packard Building
Advancing Policies & Practice Zero Energy Buildings Workshop
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Questions about the Agenda?
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ACHIEVEMENT
Zero Net Energy in CA
Introduction to ZNE
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UNDERSTANG Non-commercial reproduction of this content or use in other materials is allowed.
Please cite the source as: “California ZNE Communications Toolkit, July 2013”
A ZNE building produces as much energy as it consumes
through clean, renewable resources over the course of a year.
Also known as Net Zero Energy.
Zero Net Energy – What is it?
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UNDERSTANG Non-commercial reproduction of this content or use in other materials is allowed.
Please cite the source as: “California ZNE Communications Toolkit, July 2013”
Why ZNE?
Makes communities stronger,
resilient and energy independent
Comfortable and productive
environment for working, learning
and living
Optimized building performance
Highest architectural, mechanical,
and environmental leadership
Lower net energy costs and higher
asset value
DPR Construction | San Diego, CA DPR Offices
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UNDERSTANG Non-commercial reproduction of this content or use in other materials is allowed.
Please cite the source as: “California ZNE Communications Toolkit, July 2013”
“Big Bold” Goals for ZNE in California
All new residential construction
in California will be ZNE by 2020
All new commercial construction
will be ZNE by 2030
50% of existing buildings will be
retrofit to ZNE by 2030
The California Efficiency Strategic Plan (Sep
2008) californiaenergyefficiency.com/docs/
EEStrategicPlan.pdf
Exploratorium | San Francisco, CA DPR Offices
1
2
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UNDERSTANG Non-commercial reproduction of this content or use in other materials is allowed.
Please cite the source as: “California ZNE Communications Toolkit, July 2013”
Foundation of State Policies
Reduces statewide greenhouse gas (GHG)
emissions to 1990 levels by 2020 and to 20
percent of 1990 levels by 2050.
Requires the Energy Commission to develop
and implement a comprehensive program to
achieve greater energy savings in the state
of California’s existing residential and
nonresidential building stock.
Energy Efficiency Program for Existing Buildings (2009)
Global Warming Solutions Act (2006)
AB 32
AB 758
Long Term Energy Efficiency Strategic Plan (2008)
State’s first integrated framework−a single roadmap to achieve maximum
energy savings across all major groups and sectors.
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Non-commercial reproduction of this content or use in other materials is allowed.
Please cite the source as: “California ZNE Communications Toolkit, July 2013” UNDERSTANG
Leading by Example California’s Policy for Public Buildings
Executive Order B-18-12 requires state buildings
to significantly reduce over the next two decades.
Any proposed new or major
renovation of State buildings
larger than 10,000 square
feet use clean, on-site power
generation, such as solar
photovoltaic, solar thermal
and wind power generation,
and clean back-up power
supplies
50% of new facilities
beginning design after 2020
to be Zero Net Energy.
100% of new State
buildings & major
renovations beginning
design after 2025 to be ZNE
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Governor’s 2030 EE Savings Goal
Source: California Energy Commission
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UNDERSTANG Non-commercial reproduction of this content or use in other materials is allowed.
Please cite the source as: “California ZNE Communications Toolkit, July 2013”
Why is California pursuing ZNE? California has established leadership in
efficiency and clean energy for
decades.
Talent and expertise among California’s
workforce to implement zero net
energy solutions and advance buildings
to the best performance levels.
“The state and nation must be aggressive about
setting goals, such as having zero-net-energy
residential buildings by 2020 and commercial
buildings by 2030.”
--California Governor Jerry Brown
TALENT LOCAL INNOVATION
LEADERSHIP
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UNDERSTANG Non-commercial reproduction of this content or use in other materials is allowed.
Please cite the source as: “California ZNE Communications Toolkit, July 2013”
Getting to ZNE
INTEGRATED
PROCESS
TECHNOLOGIES and DESIGN STRATEGIES
Chartwell School | Seaside, CA
Addressing systems through
integrated design.
Heat Recovery
Cool Roof
Radiant
Ground Source Heat Pump
Underfloor Air Distribution
/Displacement
Daylighting
Lighting
Hi R-value Glazing
Natural Ventilation
HVAC
Renewable Energy
Efficient Envelope: maximum insulation, super
efficient windows, etc.
Best performing HVAC & water heating systems.
Efficient lighting & lighting controls and appliances.
Monitor and control power consumption
Use sunlight to illuminate the building
Install onsite renewables
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Non-commercial reproduction of this content or use in other materials is allowed.
Please cite the source as: “California ZNE Communications Toolkit, July 2013” UNDERSTANG
Energy use can be reduced by 65% through
integrated building design and aggressive
reductions in plug loads
Innovative use of roof-mounted photovoltaic
panels will offset any energy used
Leading by Example
Two daylit office wings with blinds and shades to
control solar heat gain and glare
Rainwater collected for toilet flushing, irrigation;
stormwater is retained on-site.
95% of construction waste recycled/salvaged
Packard Foundation
David and Lucille Packard Foundation | Los Altos, CA
LEED PLATINUM
49,000 SQUARE FEET
ZNE PERFORMANCE
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ACHIEVEMENT
Status of ZNE: US & CA Trends & Insights
Ralph DiNola, New Buildings Institute
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New Buildings Institute
NBI’s mission: To promote and accelerate the adoption of next
practices for improving energy performance throughout the built environment
NBI © 2014
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NBI © 2014
NBI… the virtuous cycle
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NBI © 2014
The largest database on ZNE buildings in North America and the only database searchable by ZNE Status & Energy Performance http://newbuildings.org/getting-to-zero-buildings-database
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NBI © 2015
39 States with ZNE Buildings
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NBI © 2014
National Status of ZNE Buildings
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NBI © 2015
Zero Energy Buildings
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NBI © 2015
NBI List
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NBI List
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• ZNE Buildings: – ZNE-Verified - 1 year or more of measured energy
data at ZNE performance (renewable energy generated onsite equals other energy); reviewed by a third party
– ZNE-Emerging – net zero targets but early in design, operations or data not yet reviewed
• Ultra-low Energy – Low-energy building compared to peer energy use. Not currently
targeting net-zero performance through onsite renewables. May be pursuing ZNE through district or renewable energy credits.
TERMINOLOGY
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ZNE and Ultra-Low Buildings are Possible in Many Building Types Across the US
To
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Small-Med Commercial Offices
Large Office Facilities
K-12 Schools
Environmental Centers
Higher Education Institutions
Government Offices
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NBI © 2014
• Add Headlines
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NBI © 2014
Ownership Type
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Existing Building Renovation
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18 ZNE Districts
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NBI © 2014
Building Size
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Building Types
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“The study’s central finding is that ZNE buildings will be technically feasible for much of California’s new construction market in 2020.”
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PV cost trend makes ZNE accessible
Source: P. Mints, Navigant Solar Services Program,
2011
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NBI © 2014
Performance Range (all projects w/ measured performance data)
n=95
National CBECS average for Commercial Buildings
Avg. EUI 21
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NBI © 2014
Richardsville Elementary School • Bowling Green, KY
• 72,300 SF
• Education K-12
• Completed in 2010
• LEED Gold
• $206/SF
• Warren County Public Schools
• Sherman Carter Barnhart, Architect
• CMTA, Mechanical and Electrical
Photo: Sherman Carter Barnhart
Photo: Sherman Carter Barnhart
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Richardsville Elementary School
Efficiency Measures:
• Ground source heat pump
• DOAS
• CO2 sensors
• Daylighting
• High performance lighting system with controls
• EMS & Energy Dashboard
Photo: Sherman Carter Barnhart
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Ultra-low Energy
Technologies and Strategies • Ground Source Heat Pumps
• Ventilation: Natural, Dedicated Outdoor Air Systems (DOAS), Demand Control Ventilation (DCV)
• Highly Efficient Thermal Envelope
• Building Orientation & Glazing ratio
• Solar Control - shading
• Daylighting Access and Controls
• Energy Management Systems
• Building Dashboards
• Radiant Heating / Cooling & Chilled Beams
• Plug load Reductions
• Energy Recover Systems
NASA Sustainability Base, CA Courtesy: Cesar Rubio Photography, McDonough & Partners
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NBI © 2015
Challenges
• Data Gathering
• PV delayed due to cost
• Projects not occupied or
operated as modeled
• Getting the metering right
• Commissioning – new
form of ZNE Cx
• Fear of disclosure - ZNE
seen as an end-all
Definitions
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ZERO NET ENERGY BUILDINGS IN
CALIFORNIA:
COMMERCIAL BUILDINGS
SMUD East Campus Operations Center
Bacon St. Offices, SDG&E & Hanna Gabriel Wells Architects
DPR Construction San Diego Corporate Office
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Exploratorium | San Francisco, CA IDeAsZ2 Office Building San Jose, CA
ZERO NET ENERGY BUILDINGS IN CALIFORNIA:
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David and Lucille Packard Foundation | Los Altos, CA Chartwell School | Seaside, CA
ZERO NET ENERGY BUILDINGS IN CALIFORNIA:
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Code Cycles to Net Zero in CA
Code Cycles to ZNE, Source: SCE & AEC, 2009
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NBI © 2014
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ACHIEVEMENT
Planning for ZNE Introduction & Group Activities
Ralph DiNola, New Buildings Institute
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Non-commercial reproduction of this content or use in other materials is allowed.
Please cite the source as: “California ZNE Communications Toolkit, July 2013” UNDERSTANG
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NBI © 2013
Assembling the Building Blocks of your ZNE Plan
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Assembling the Building Blocks of your ZNE Plan
1. Set your goals & milestones (Worksheet)
2. Backcast how you will get to ZNE (Worksheet)
3. Identify your key stakeholders and communication goals, then map stakeholder
interaction (Worksheet)
4. Develop your Communication & Outreach Plan, then engage stakeholders
5. Conduct a gap analysis & create a plan for alignment (Worksheets)
6. Review your current/future building & retrofit plans for ZNE opportunities and
develop criteria for prioritizing
7. Identify & conduct any special research/studies needed
8. Select a pilot project
9. Evaluate available delivery method options for best likely ZNE result (Worksheet)
10. Explore alternative financing approaches to help offset costs
11. Create RFQ/RFP that sets clear owner requirements and targets for ZNE
12. Conduct an integrated design process and use proven technologies & design
strategies
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NBI © 2013
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NBI © 2013
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ACHIEVEMENT
Establishing Your ZNE Targets
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Typical U.S.
Building
EUI = 92
64,000 sf of PV
High Performance
Building
EUI = 32
26,000 sf of PV
ZNE. Building
EUI = 16
14,000 sf of PV
Courtesy: PAE Consulting
Engineers
Bullitt Center
Solar Budget
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Bullitt Center Energy Budget
Courtesy: PAE Consulting Engineers
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Packard Building Energy Model
CA Title 24
EUI = 50
Courtesy: EHDD kB
tu/s
f/yr
kW
hs/s
f/yr
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ACHIEVEMENT
Vision, Goals & Backcasting
Defining Success, Milestones & Targets
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NBI © 2013
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BACKCASTING GROUP EXERCISE
For your organization / project:
1. Begin with the end in mind: Set your vision & goals
2. Backcast to today
3. Plan each component for your building/portfolio
4. Define your targets and milestones
5. Determine measures of success