Cathy Higgins
Research Director, NBI
Ric Cochrane
Project Manager, PGL
Dave Hewitt
Executive Director, NBI
• NBI is a national non-profit working to
improve energy performance of
commercial buildings
• Board of Directors represent leaders in
energy and green building
• Sponsors include progressive utilities,
PBAs, market transformation entities
and state governments
• Strategic relationships with leading
organizations such as National Trust for
Historic Preservation’s Preservation
Green Lab (PGL)
• PGL functions as a programmatic field
office of the National Trust for Historic
Preservation and works closely with local,
state and national partners to develop
innovative content and strategic
partnerships
• Advances research that explores the
value that older buildings bring to their
communities
• Pioneers policy solutions that make it
easier to reuse and green older and
historic buildings
Dave Hewitt, nbi
• Existing buildings are the critical market opportunity now for significant energy savings.
• A focus on new construction strategies can only address 1-2% of the building stock each year.
• There are more than 70 billion square feet of existing commercial building space in the United States alone.
• Part of the critical path to meeting climate and energy policy goals as well as utility efficiency targets and real estate objectives.
• Need to move beyond building-by-building and widget-based approaches in a way that integrates profound energy savings into the urban fabric.
• Held September 14-16, 2011 in Boulder,
Colorado at the historic Hotel Boulderado
• Convened 80 national experts in critical
aspects of energy efficiency in existing
buildings including:
• Implementation
• Design
• Ownership & Management
• Research & Policy
• Energy efficiency programs
Photo courtesy of Fitzmartin Consulting
“Aimed at defining the
framework and tools needed to
support much more aggressive
levels of efficiency in the
existing commercial building
marketplace.”
Learn from the latest case studies & research
Inform and refine efforts underway to develop tools as well as market and regulatory approaches for catalyzing deep energy savings
Connect companies, professionals and policymakers with experience in distinct disciplines of commercial real estate and energy efficiency
Develop specific and replicable solutions that successfully address market barriers
Identify strategies to accelerate deep energy savings in existing buildings throughout North America
Acknowledgements
Alliance for Sustainable Colorado
Alliance to Save Energy
Architectural Heritage Foundation
BC Hydro
Bestway Insulation, LLC
Better Bricks/NEEA
Cadmus Group
CB Richard Ellis
City of Portland BPS
City of Seattle
Clanton & Associates
CNT Energy
Commonwealth Edison
Consulting Engineer
Crestone Partners, LLC
Design Alliance
Earth Advantage Institute
Ecology Action
Ecotope
Efficiency Maine
Energy Center of Wisconsin
Energy Foundation
Energy RM
Fitzmartin Consulting
Gelfand and Partners Architects
Goody Clancy Architects
Green Building Services
IESRMS
Joyce Foundation
K Energy/Better Bricks
Living City Block
M.A. Mortenson Company
McKinstry
Muldavin Consulting
National Grid
NBBJ Architects
NEEP
New Buildings Institute
New Jersey Institute of Technology
North Atlantic Energy Advisors
NRDC
NREL
National Trust for Historic Preservation - Preservation Green Lab
NYSERDA
Oak Ridge National Lab
Pacific Gas & Electric
PECI
Resource Media
Rocky Mountain Institute
Sacramento Municipal Utility District
SERA
Southern California Edison
Southwest Energy Efficiency Projects
State of Illinois
SWEEP
The Kresge Foundation
UC Davis Energy Efficiency Center
University of Idaho
University of Washington
US Department of Energy
Wave Palo Alto
Waypoint Building Group
Blach Intermediate School
Modernization and Additions
Energy use intensity
Before: 56 kBtu/ft2
After: 33 kBtu/ft2
Source: Gelfand Architects, CA
Deep Savings are Possible
Smaller Buildings Matter
Learn from Leaders
Simplify Delivery
Aggregate Buildings
Use Urban Strategies
Create Solution Sets
Facilitate Financing
Align Programs & Policies
Leverage Trigger Points
Partner for Outreach & Training
Target Tenants
MARKET AND TRENDS: UNDERSTANDING OPPORTUNITY
Webinar Objective: Inform – Connect - Change
Today’s Topics:
1. Market and Trends
2. Bright Spots
3. Key Topics
4. Typologies and Tools
5. Driving Change
Cathy Higgins, nbi
Deep: 30% minimum and 50% target savings
Retrofit: multiple measures/systems
others: renovation – upgrade – change-out – TI
Energy Use Intensity (EUI): Watts/square foot/year
Ultra-low energy building: achieving maximum energy efficiency of all systems and designs
Small /medium buildings (SMB): < 50,000 square feet
Getting to Fifty (GT50): cutting energy use in half TM
0%
10%
20%
30%
40%
50%
60%
70%
80% % of Bldgs % of Sq. Ft. % of Energy Use
Buildings under 50,000 SF are: • 95% of the buildings • 50% of the square footage • 45% of Energy Use
Source: nbi created from Energy Information Administration Commercial Building End-Use Consumption Survey (CBECS) 2003.
U.S. Commercial Non-Mall Buildings by Size
2-29-2012
Plug loads End-Use Projected Growth for the Residential and Commercial Sectors
Source: Graph created by Ecova with data from EIA 2008 Annual Energy Outlook
CO2 / NO2
Building’s price/value is flat or in decline
New Construction lagging
Renovation and Repositioning active
Tenant & corporate sustainability criteria
Energy ratings and disclosure ordinances
Stretch or reach codes
LEED – LEED - LEED
USGBC Building Performance Report thru NBI’s First View
Today’s Topics:
1. Market and Savings
2. Bright Spots
3. Key Topics
4. Typologies and Tools
5. Driving Change
BRIGHT SPOTS: LEARNING FROM LEADERS
Stop Waste Building, Oakland, CA
Cathy Higgins, nbi
2-29-2012
Verify
Document outcomes
Establish metrics
Increase confidence
Identify Lessons
Inspire / Influence
Showcase
Individuals and Organizations
Prompt our natural interest to compare
• Office
• 1-Story, 8,500 sf
• Constructed in 1940
• Retrofit 2006
• EUI: 46 kBtu/sf/yr
• Energy Star Rating: 99
• LEED-NC Platinum
• 2007 Energy Star Award
Case Study
“The fact that we were able to ‘walk our talk’ has given us an advantage point as
an organization.”
-Teresa Erickson, Northern Plains Resource Council
Credit: Northern Plains Resource Council and High Plains
Architects
Mercy Corps Headquarters | Portland, OR
Renovation
Photo Source: Green Building Services
• EUI 36 kBtu/sf/yr
• 62% reduction from CBECS average
Ultra-low energy
building
Portfolio Manager EUI
National Average EUI
Mercy Corp EUI
Mercy Corps Headquarters | Portland, OR Energy
Efficiency Measures • Variable speed
compressor heat pump
condensing units
• Variable air volume (VAV)
box with CO2 sensors
• Increased insulation
• Motorized clerestory
windows to exhaust air
• Low-e glazing
• Direct/Indirect T8 fixtures
with dimmable ballasts
• Daylighting controls
• Building Management
System – controls
• Commissioning
Multi-Tenant nonprofit Office
6-Story, 38,800 sf
Constructed in 1908
Retrofit 2006
EUI: 42 kBtu/sf/yr
Energy Star Rating: 85
LEED EB Gold, LEED CI Silver, Energy Star Leader and Colorado Energy Champion Award
Owner: Alliance for Sustainable Colorado
The Alliance Center | Denver, CO
Overview
Credit: Alliance for Sustainable Colorado
Case Study
Total project cost: $3.07/sq ft
Average annual energy savings: $8,800
35 tenants focused on advancing sustainability
Serves as a public demonstration project for advanced design strategies
The Alliance Center | Denver, CO
Business
Credit: Slaterpaull Architects
• Multi-Tenant Office
• 14-Story, 134,000 sf
• Constructed in 1929
• Retrofit 2007
• EUI: 39 kBtu/sf/yr
• Energy Star Rating: 98
• LEED EB Gold and AIA Seattle 2009 Top 10 Awards
• Owner: Rose Smart Growth Investment Fund
Credit: William Wright Photography
“In ten years every building will either be a brown building or a green building.”
Jonathan Rose, March 2011
Case Study
Ultra-low energy
building
Portfolio Mgr. EUI
Nat. avg. EUI
Vance EUI
Efficiency Measures
Removed ducted heating systems
Recalibrated steam heating system
Localized thermostats
Operable windows
Automated sunshades
Lighting retrofit with automated controls
Light shelves
CO2 sensors
Re-commissioning
Pre-retrofit
EUI
Building occupied during renovation
Improvement cost: $26/sq ft
Increased occupancy by 26% since renovation
Created TI guidelines for tenant retrofits to guide design decisions for daylighting, ventilation, and finishes.
Credit: Lara Swimmer
Multi-Tenant Office
11-Story, 253,000 sf
Constructed in 1990
Retrofit 2010
EUI: 23 kBtu/sf/yr
Energy Star Rating: 100
LEED EB Platinum
Owner: Glenborough, LLC
The Aventine| La Jolla, CA
Overview
Credit: Glenborough, LLC
Case Study
Efficiency Measures • Replaced chiller compressors
• Automated chiller controls
• EPA cool roof
• Lighting retrofit
• Automated lighting controls
• Daylighting: 50% daylighting
views
• Whole Building Control/Mgmt:
Piloting integrated energy
information systems program
The Aventine| La Jolla, CA
Energy
Best practice
existing
building
Portfolio Mgr.
EUI
Nat. avg. EUI
Aventine
EUI
Multi-Tenant Office
12-Story, 313,000 sf
Constructed in 1987
Retrofit 2010
EUI: 64 kBtu/sf/yr
Energy Star Rating: 97
4th Place in EPA National Building Competition
Honored as one of EPA’s EnergyStar “Top Performers” in 2008, 2009, and 2010
Owner: Glenborough, LLC
1525 Wilson Boulevard| Rosslyn, VA
Overview
Credit: Glenborough, LLC
Case Study
Deep Retrofit On 3 buildings from
portfolio of 3000
Savings Of 50–70% energy cost
With 13% IRR
Learned 2/3 of savings came
from 5 measures
Across portfolio 30–50% savings for 20+% IRR
RMI Case Study, V. Olgyay
Savings Strategies
• Lighting Measures: high efficiency lighting, integrated daylighting and lighting controls
• HVAC: advanced systems, radiant heating / cooling, evaporative cooling, energy mgmt. controls, motorized ventilation dampers, demand controlled (CO2) ventilation
• Daylighting: integrated lighting controls, automated blinds, exterior shades, skylights
• Envelope: operable windows, increased insulation, improved glazing
• Controls/Monitoring/Cx: whole building monitoring, tenant-level metering, ongoing tracking, continuous commissioning (Cx)
Reported efficiency measures in 22 CA High Performance Buildings
0% 25% 50% 75% 100%
LIGHTINGHigh efficiency lighting
DaylightingOccupancy sensors / Lighting …
Exterior window shadingInterior window blinds
Light sensor controls
HEATING, COOLINGEnergy monitoring systems
High efficiency condensing boilersUnderfloor air distribution
Evaporative coolingEnergy recovery
Other high efficiency equipmentRadiant floor heating
VENTILATIONCO2 Sensors
Natural ventilationIncreased ventilation rate
Operable windowsNight venting
SHELLReflective roofs
High performance glassIncreased insulation
Thermal mass
ON-SITE RENEWABLESSolar PV
Reported Measure Frequency (from total of 22 participants)
Integrated design and multiple measures are more critical to low-energy buildings than any given technology. Readily available technologies can be applied within standard budgets.
Major renovations offer a major opportunity for deep savings. Re-positioning existing buildings is currently an attractive real estate move.
Building ratings, labels and recognition were a strong influence on increased efficiency targets.
There is need for a consistent, long-term metric to measure the performance of buildings and policies.
Today’s Topics:
1. Market and Savings
2. Bright Spots
3. Key Topics
4. Typologies and Tools
5. Driving Change
KEY TOPICS: THE WORK OF THE WORKING GROUPS
Cathy Higgins, nbi
1. Programs & Policy
2. Outreach, Education & Information Flow
3. Delivery Approaches
4. Urban Strategies
5. Technical Solutions / Typologies Ric Cochrane, PGL
Establish long-term energy plans
Advance outcome-based and EB codes and compliance
Utilities / Regulators must: – value deeper savings more
– remove cost effectiveness and resource cost barriers to bundled measures
– maintain reliable multi-year programs
– initiate on-bill financing
– purchase proven/tracked savings
Consider tax modifications to stir market investment
Streamline access – reduce process side
36
Increase and standardize cost, market and finance information
Drive performance data and value
Establish green leases and tenant energy guidance
Work through trusted sources
Timing is everything – customize and target
2) Outreach, Education & Information Flow
Office Plug Loads:
Best Practice Guideline nbi, ecova & others
Expand third-party models
Pursue portfolios
Establish power purchase agreements
Leverage and support leading design firms
Pilot alternative delivery and aggregation models
Ecology Action
SMB Efficiency Delivery Approach
Source: Peter Larsen, LBL Study, NECC Briefing Jan. 2011
Adopt benchmarking and disclosure ordinances
Advance codes, fee-bates, density bonuses etc.
Incorporate energy into infrastructure and planning
Leverage community for aggregation
Facilitate district energy
5) TYPOLOGIES AND TOOLS: BUILDING CHARACTERIZATION
Today’s Topics:
1. Market and Savings
2. Bright Spots
3. Key Topics
4. Typologies and Tools
5. Driving Change
Building Characterization:
Identifying Opportunities
Outreach and Marketing
Ric Cochrane, PGL
Characterizing Existing Buildings
Focus on:
• Underserved building types
• Buildings of interest
• Buildings at risk
• Market share
• Repeatability of simplified guidelines
What do we need to know about buildings to identify deep retrofit opportunities? How are buildings the same? What are the commonalities that enable repeatability – “rules of thumb?” How are buildings different? What do we need to know to achieve DER in underserved buildings?
Bridging the Information Gap
CBECS micro-data National
characterization/segmentation efforts
Municipal permit and building data
Architectural taxonomies
Market analysis
Characterization Resources
Things That Can’t Change Building Area Age Number of floors Exterior wall construction Percent glazing area Glazing location Glazing size Glazing type Freestanding versus
attached Shape Location/Climate zone
Key Physical Variables
Things That Can Change Current building use HVAC equipment Major fuel source Lighting, refrigeration and
plug loads Energy consumption (Btu) Roof composition
Market Analysis
• Market conditions • Ownership and management • Financial pressures • Operations and maintenance
Scorecards
51% of commercial buildings by number 33% of commercial buildings by area
1-Story Freestanding Pre-WWII Restaurant/Office/Retail
Post-WWII Restaurant/Office/Retail/Grocery 1-Story Attached Pre-WWII N’hood Storefront Rows - Office/Rest/Retail Post-WWII N’hood Storefront Rows - Office/Rest/Retail Strip Mall <50K Strip Mall 50-100K 2+ Story Freestanding Post-WWII Office 2+ Story Attached Pre-WWII Main Street mixed-use Lodging Freestanding Post-WWII Motel - West Coast style Pre-WWII Boutique Hotel Post-WWII Hotel School 1-2 Story Free Pre-WWII K-12, Elementary, Junior HS, HS Post-WWII K-12, Elementary, Junior HS, HS <50K K-12, Elementary, Junior HS, HS 50-100K
Building Types
National Building Survey
The Green Lab and nbi will test the effectiveness of retrofit tools through strategic partnerships and determine how best to deliver deep energy savings to the target building types.
Pilot Phase
DRIVING CHANGE: NEXT STEPS TOWARD DEEP SAVINGS
Today’s Topics:
1. Market and Savings
2. Bright Spots
3. Key Topics
4. Typologies and Tools
5. Driving Change
Dave Hewitt, nbi
FirstView analytical tool for existing buildings on the website soon
Largely completed prototype analysis – beginning work on the “Multi-Measure” tool
Looking for pilot projects to utilize tools
Developing proposals for funding around energy codes and policies to encourage deep savings in existing buildings
Seeking performance data and case studies for GT50
Consolidated data repository from NBI whole-building performance projects
Used for analysis, benchmarking and integration with new tools
Primarily anonymous
Next Summit
Deep Savings in Existing Buildings National Initiative
Network Sponsors
Strengthen Collaborations
Delivery Partners: Urban Entities, possible third-party strategies
make all buildings new buildings
City of Denver action with Alliance for Sustainable Colorado and Living City Block
RMI, NBI and True Market Solutions to announce a portfolio energy retrofit challenge
ULI announces Greenprint Center for Building Performance
CA Commercial Building ZNE Champions network prioritizes existing buildings.
NEEA Existing Building Renewal Initiative getting ready to announce first buildings
Rocky Mountain regional group formed at the Summit – ad hoc meetings to drive deep energy savings
Energy and momentum for going deep in existing buildings
Increased collaboration and dialog
Need more bright spots!!!
Brief survey at end of webinar
Access the Report: A copy of the summit report, links to resources and
webinar recording are available at: www.newbuildings.org/summit
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