andy shapiro, energy balance, inc
TRANSCRIPT
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Energy Balance, Inc.
Scoping Green Renovation
Andy Shapiro, Energy Balance, Inc.
14 April 2010
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Energy Balance, Inc.
Scoping Green Renovation
�Setting goals, metrics, implementation strategies
�MacArthur “Roadmap” work
�Green strategies for affordable housing.
�Prioritizing various elements
�What does this look like in a project?�Ongoing tracking of benefits
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Energy Balance, Inc.
WhyBother?The perfect storm
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Energy Balance, Inc.
Setting goals, metrics, implementation strategies
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Energy Balance, Inc.
Setting goals, metrics, implementation strategies
Why bother to set goals?
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Energy Balance, Inc.
Setting goals, metrics, implementation strategies
Why bother to set goals?
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Energy Balance, Inc.
Goals, Objectives and Strategies
� Define the ENVIRONMENTAL GOALS for the building.
� Best before schematic design phase
� Green design stretches out the
schematic design phase.
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Energy Balance, Inc.
Goals, Objectives and Strategies
�Example GOAL: Highly efficient use of energy
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Energy Balance, Inc.
� Translate goals into OBJECTIVES �Metrics to see if goals are being met, such as�Use 50% less energy than Energy Code
�Reduce building energy operating cost by 50%
�Maintain affordable PUM in year 2025
Goals, Objectives and Strategies
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Energy Balance, Inc.
� Translate OBJECTIVES into specific systems or STRATEGIES that will be considered for the building. � Example STRATEGIES: Super-insulated walls; super-windows; highest efficiency boilers, energy recovery ventilation, solar hot water....
Goals, Objectives and Strategies
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Energy Balance, Inc.
� GOAL� OBJECTIVE
� STRATEGIES
Goals, Objectives and Strategies
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Energy Balance, Inc.
Goals, Objectives and Strategies
� GOAL: Highest energy efficiency� OBJECTIVE: 50% less energy use than code�STRATEGIES: Super-insulation, highest efficiency boilers and chillers, energy-recovery ventilation
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Energy Balance, Inc.
Scoping Green Renovation
Roadmap to Energy Affordability:
How much to spend on affordable housing rehab to be sure energy
costs stay affordable?
(And how to spend it?)
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Energy Balance, Inc.
Roadmap to Energy
Affordability
Purposes:
� Provide roadmap for housing providers
� Provide data for policy-makers to set funding levels
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Energy Balance, Inc.
Volatility in current energy markets
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Energy Balance, Inc.
Volatility in energy markets
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Energy Balance, Inc.
Roadmap to Energy
Affordability
Risk avoidance as an approach to the volatility in current energy markets
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Energy Balance, Inc.
Roadmap to Energy
Affordability
“Near term” and ”permanently” affordable
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Energy Balance, Inc.
Roadmap to Energy
Affordability
“near term” affordable -- for 15 years energy costs will not effect
affordability
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Energy Balance, Inc.
Roadmap to Energy
Affordability
“near term” affordable -- for 15 years energy costs will not effect
affordability
”permanently affordable” -- energy costs will be so low as to not effect affordability for the
foreseeable future
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Energy Balance, Inc.
Roadmap to Energy
AffordabilityFor “near term” affordable, what are:
� Current fuel costs?
� Analysis period?
� Escalation rate? (base rate and high rate)
� Acceptable $PUM? (total energy cost for heat and hot water -- includes common costs and tenant costs)
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Energy Balance, Inc.
Roadmap to Energy Affordability
The “oracle method” arrived at
� Current fuel cost $3.00/gallon oil
� Analysis period – 15 years
� Escalation rates (5% and 10%)
� Acceptable $PUM in yr 15 = $75 for a typical 2 BR, family, 750 sq. ft.
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Energy Balance, Inc.
Roadmap to Energy
AffordabilityParameters for “permanently affordable”
� Use most expensive fuel cost: photovoltaics
� Minimize total investment in energy improvements plus investment in PV to provide all the energy needed.
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Energy Balance, Inc.
permanently affordable Cost for Cost for Total Cost
Rehab PV for Rehab + PV Only Only Total Existing Unit -- $$$$$$$$$ $$$$$$$$$ Low level $$ $$$$$ $$$$$$$ Rehab Level 2 $$$ $$$$ $$$$$$$ Rehab Level 3 $$$$ $$$ $$$$$$ Rehab Level 4 $$$$$$ $$ $$$$$$$$ Rehab
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Energy Balance, Inc.
permanently affordable Cost for Cost for Total Cost
Rehab PV for Rehab + PV Only Only Total Existing Unit -- $$$$$$$$$ $$$$$$$$$ Low level $$ $$$$$ $$$$$$$ Rehab Level 2 $$$ $$$$ $$$$$$$ Rehab Level 3 $$$$ $$$ $$$$$$ Rehab Level 4 $$$$$$ $$ $$$$$$$$ Rehab
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Energy Balance, Inc.
Roadmap to Energy Affordability Housing Types for Analysis
Description
1
2
3
4Typical housing project that often includes several smaller buildings, either built as apartments or changed from single family to multi-family
Slab-on-grade duplex/townhouses, typically 1970's/1980's vintage
Larger downtown buildings, multi-unit, older buildings, may have retail below, may be
historic. Will include interior-insulation for Near Term Affordable retrofit and exterior
insulation for Permanently Affordable
Double loaded corridor, newer construction, typically 20 - 40 units, built within last decade. Costs will be for upgrading features during construction, as opposed to retrofit costs
since existing examples tend to be relatively new buildings and since this is a likely form for much
future new construction of affordable housing
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Energy Balance, Inc.
Scoping Green Renovation
�Setting goals, metrics, implementation strategies
�MacArthur “Roadmap” work
�Green strategies for affordable housing.
�Prioritizing various elements
�What does this look like in a project?�Ongoing tracking of benefits
![Page 28: Andy Shapiro, Energy Balance, Inc](https://reader034.vdocuments.mx/reader034/viewer/2022052522/554a070eb4c905e56c8b5784/html5/thumbnails/28.jpg)
Energy Balance, Inc.
Green strategies for affordable housing
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Energy Balance, Inc.
Green BuildingsWhat Are They?
�Healthy
�Durable
�Efficient
Meet these goals without affecting future generations’ ability to do the same.
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Energy Balance, Inc.
Healthy
� Healthy for the Occupants
� Healthy for the Construction Workers and Fabricators
� Healthy for the Earth
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Energy Balance, Inc.
Healthy for the Occupants:Excellent Indoor Air Quality
� Materials –� zero formaldehyde
� avoid plasticizers
� Avoid/minimize VOC’s
� Allergen control: Don’t feed the critters: avoid or carefully locate carpet
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Energy Balance, Inc.
Hardwood floors in living and dining room (Waterfront Housing, Burlington, VT)
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Energy Balance, Inc.
Healthy for the Occupants:Excellent Indoor Air Quality
� Ventilation – good and plenty!
� All houses need mechanical ventilation
The price of living in a closed box is bringing in fresh air!
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Energy Balance, Inc.
Healthy for the Occupants:Excellent Indoor Air Quality
� Compartmentalization of apartments for second-hand smoke control
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Energy Balance, Inc.
Ventilation� Minimum – exhaust-only:
high efficiency, quiet fans, running 24/7
� Best – balanced system:
energy recovery, fresh air to each occupied room, stale air out of moisture producing rooms, 24/7
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Energy Balance, Inc.
Balanced System
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Energy Balance, Inc.
Heat recovery ventilation
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Energy Balance, Inc.
How is it done?Energy and Heat Recovery Ventilation
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Energy Balance, Inc.
Healthy for the Occupants:Moisture control = mold control� Rain water
� Ground water
� Internally generated moisture
Mold = potential liability issue
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Energy Balance, Inc.
Healthy for the Occupants:Moisture control = mold control
� Rain water
� Problems usually from the roof!� Proper grading critical
� Rain screen approach to siding
� See Building Science Corporation’s excellent work
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Energy Balance, Inc.Image courtesy John Straube, Building Science Corporation
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Energy Balance, Inc.
Healthy for the Occupants:Moisture control = mold control
� Ground water
� Capillary breaks in foundation
� Continuous moisture barrier
� Excellent drainage
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Energy Balance, Inc.
Capillary break and vapor barrier
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Energy Balance, Inc.
Healthy for the Occupants:Moisture control = mold control
� Internally generated moisture
� No thermal bridges = No condensation. Good windows
� Slab insulation – important for condensation control
� Ventilation
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Energy Balance, Inc.
Healthy for the Occupants:Moisture/Allergen control
� Surfaces easy to keep clean
� Building maintenance: Non-toxic cleaning products
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Energy Balance, Inc.
Healthy for the Construction Workers and Fabricators� Low toxicity materials
� Low toxicity during manufacture
� Low toxicity during installation
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Energy Balance, Inc.
Healthy for the Earth: Materials Choices� Recycled –
Re-hab an old building
� Recycled –cellulose insulation
� Recyclable –Metal roofing
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Energy Balance, Inc.
Healthy for the Earth: Materials Choices� Sustainable – certified sustainably harvested wood
� Low embodied energy – local material
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Energy Balance, Inc.
Healthy for the Earth: Site and Location Choices
� Build on public transit lines
� Build on non-agricultural land
� Build near walking and bicycle paths
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Energy Balance, Inc.
Healthy for the Earth: Site and Location Choices� Cluster development
� Preserve and enhance existing ecosystems
� Rehabilitate a ‘brownfield’ site
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Energy Balance, Inc.
Healthy for the Earth: Site and Location Choices
� Local plants
� Limit turf that requires mowing
� Manage runoff from parking and roads
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Energy Balance, Inc.
Healthy for the Earth:
Durable
� Durable materials
� Durable detailing
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Energy Balance, Inc.
Healthy for the Earth:
Durable
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Energy Balance, Inc.
Healthy for the Earth:
Durable
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Energy Balance, Inc.
Healthy for the Earth:
Efficient�Resource Efficient
�Space Efficient
�Energy Efficient
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Energy Balance, Inc.
Resource Efficient
� Only build as much space as needed
� Optimize materials use and systems design: Don’t ‘over-engineer’ !� OVE Framing
� Recycling of
construction
debris
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Energy Balance, Inc.
Resource Efficient� Low water consumption –water-efficient toilets
� Easy-to-use recycling facilities
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Energy Balance, Inc.
Energy Efficient
� (Good) Super envelope
� High efficiency mechanical systems
� High efficiency lighting and appliances
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Energy Balance, Inc.
Good envelope
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Energy Balance, Inc.
Add 4” foil-faced foam to 2x6 wall
From R-16 to R-40
Super envelope
Add 2 more inches foam
From R-10 to R-20
Super-windows: From R-3 to R-5 and beyond!
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Energy Balance, Inc.
Good envelope
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Energy Balance, Inc.
Super envelope
Add 4” foil-faced foam to ceiling
From R-28 to R-54
Foam-in-place air seal
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Energy Balance, Inc.
Super envelope retrofit(Building Science Corp)
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Energy Balance, Inc.
Super windows – R-5 instead of R-3
Fiberglass frame window, triple + two-low-e + argon + Superspacers (Accurate Dorwin, Serious Materials, Marvin new 1.5” triple)
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Energy Balance, Inc.
Super envelope – Air leakageInfiltration
ACHTypical 0.35
Micro-load 0.10
Air Leakage (Infiltration) Rate
Air Changes per Hour
-
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
Typical Micro-load
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Energy Balance, Inc.
Super envelope –Air leakage
Infiltration
ACH Gal propane $$/yr
Typical 0.35 115 402$
Micro-load 0.10 33 115$
Savings 82 287$
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Energy Balance, Inc.
Super envelope –Air leakage
Cost for HRV 2,000$
cost for air sealing 500$
total cost 2,500$
Payment 201$
Infiltration
ACH Gal propane $$/yr
Typical 0.35 115 402$
Micro-load 0.10 33 115$
Savings 82 287$
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Energy Balance, Inc.
Super envelope –Air leakage
Cost for HRV 2,000$
cost for air sealing 500$
total cost 2,500$
Payment 201$
Infiltration
ACH Gal propane $$/yr payment
Typical 0.35 115 402$
Micro-load 0.10 33 115$
Savings 82 287$ 201$
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Energy Balance, Inc.
Energy Efficient
� Recycle energy flows� Ventilation energy recovery
�Waste water energy recovery
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Energy Balance, Inc.
Energy Efficient
�Waste water energy recovery
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Energy Balance, Inc.
Energy Efficient Lights and AppliancesLighting Design� High efficiency lighting –Energy Star fixtures
� Occupancy control for lighting in common areas (check ballasts for “program start”)
� High efficiency appliances –Energy Star appliances
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Energy Balance, Inc.
Energy Efficient� Use as much renewable energy as you can afford!� Bio-mass heating
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Energy Balance, Inc.
Energy Efficient� Use as much renewable energy as you can afford!� Passive solar – can be inexpensive
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Energy Balance, Inc.
Energy Efficient
� Use as much renewable energy as you can afford!� Solar thermal, solar electric
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Energy Balance, Inc.
Prioritizing various elements for affordable housing
� High integrity thermal envelope (thermal and moisture)
� Very durable� Recover energy flows� Conserve water
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Energy Balance, Inc.
Prioritizing various elements for affordable housing
� High efficiency distribution � Excellent indoor air quality – Good ventilation and materials
� High efficiency equipment � Use renewable energy
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Energy Balance, Inc.
Scoping Green Renovation
�Setting goals, metrics, implementation strategies
�MacArthur “Roadmap” work
�Green strategies for affordable housing.
�Prioritizing various elements
�What does this look like in a project?�Ongoing tracking of benefits
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Energy Balance, Inc.
Setting your energy goals
� Data Gathering and Analysis
� Energy Goals
� Developing a Workplan
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Energy Balance, Inc.
Data Gathering
� Building Stats
� Building Energy Use
� Building Audit
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Energy Balance, Inc.
Data Gathering
� Stats
� --the patient’s history
� Energy Use
� -- the patient’s pulse
� Detailed Energy Audit
�-- the patient’s EKG
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Energy Balance, Inc.
StatsBuilding Name
Location, physical address
Location, city, state and zip
Total building conditioned sq ft
Total building unconditioned sq ft (sheds, storage, etc.)
Total building semiconditioned sq ft (basements, mudrooms, other)
Number of units, by # bedrooms
% Occupancy
Date of original construction
Date of last renovation
Known problems with occupant comfort
Known energy usage issues
Deferred/upcoming maintenance items
Are there needs for expansion or renovation of this building?
Your name, date
Other notes
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Energy Balance, Inc.
Stats
Building envelope
Building construction type, number floors double loaded corridor, 4 floors
Describe system, insulation and cladding for:
Walls 2x4, brick clad, no insulation
Roof/Ceiling 2x10, 3" rigid ins. Under membrane
Foundation concrete block, no insulation
Slab 4" (?) in basement, no insulation
Windows Old doublehung + triple trackstorm
Date of most recent energy audit N/A
Is audit report available? If so, from whom N/A
Is building on historic register or other restrictions? Historic district, rehab pres. credit
List building elements in need of repair Brick spalling near grade, windows
Describe known problems with building envelope Moisture in basement, water
Other notes Structure sound
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Energy Balance, Inc.
StatsMechanical Systems
Heating System
fuel Oil
prime mover type Boiler
Prime mover capacity (Btu/hr) 500,000
distribution Steam radiators
year installed 1935
Cooling System
type Window air condtioners
capacity ?
year installed ?
Ventilation system
type intermittent bath fans
capacity, cfm ?
Describe water source for building City water
Known issues with any mechanical systems high water pressure, poor zoning
Other notes
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Energy Balance, Inc.
Energy Use – taking the pulse
12 month total energy and water usage, energy usage from all sources
start date of usage data
end date of usage data
ccf natural gas
gallons oil
gallons propane
cords wood
tons wood chips
tons wood pellets
kWh electricity
peak electricity demand, kW
gallons water use
Other notes
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Energy Balance, Inc.
Energy Use – taking the pulse
ENERGY USAGE DATA
Occupancy
Total
Square
Footage
Total
Electricity
kWh Oil Gals
Propane
Gals
Nat Gas
cu ft
Burlington Cohousing multi-family 26,450 105,372 14,241
Waterfront Housing multi-family 45,000 202,000 10,545
Evergreen Place elderly housing 17,240 81,840 1,397
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Energy Balance, Inc.
Energy Use – taking the pulse
PERFORMANCE DATA
ALL ENERGY SOURCES MMBtu
Btu/
sq.ft.-yr
kWh/
sq.m.-yr
Burlington Cohousing multi-family 1,812 69,000 217
Waterfront Housing multi-family 1,765 39,000 123
Evergreen Place elderly housing 469 27,000 85
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Energy Balance, Inc.
Energy Use – taking the pulse
PERFORMANCE DATA
ALL ENERGY SOURCES MMBtu
Btu/
sq.ft.-yr
kWh/
sq.m.-yr
Burlington Cohousing multi-family 1,812 69,000 217
Waterfront Housing multi-family 1,765 39,000 123
Evergreen Place elderly housing 469 27,000 85
PassivHaus standard: 15 kWh/sq.m-yr heat120 kWh/sq.m-yr total SOURCE energy
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Energy Balance, Inc.
Energy Use – taking the pulse
PassivHaus standard: 15 kWh/sq.m-yr heat120 kWh/sq.m-yr total SOURCE energy
Waterfront Housing:~66 kWh/sq.m-yr heat~265 kWh/sq.m-yr total SOURCE energy
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Energy Balance, Inc.
Energy Audit – Digging Deeper Getting the EKG!
�Mechanical assessment (re-commissioning)� Electrical loads: � Apartment lighting, appliances, other� Common lighting, office equipment, elevator, outdoor lighting, other
� Envelope
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Energy Balance, Inc.
Energy Audit – Digging Deeper Getting the EKG!
Waterfront Apartments
Natural Gas Use
Heat, therms/yr 7,905
Domestic Hot Water, therms/yr 2,640
Total therms/yr 10,545
Btu/sq.ft.-dday heat only 2.33 Avg gas cost/apt-month 22.70$
Avg gas cost/apt-year 272$ Btu/sq.ft.-yr 26,363
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Energy Balance, Inc.
Energy Audit – Digging Deeper Getting the EKG!
Waterfront Apartments
Electricity Use
Electricity, apt's only kWh/yr 96,000
Electriciy, house meter 106,000
Total kWh/yr 202,000
Avg monthly tenant electric bill 19.46$
Cost of house meter/apt 25.21$
kwh/sq.ft.-yr 5.1
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Energy Balance, Inc.
Energy Audit – Digging Deeper Getting the EKG!
Waterfront Apartments
House meter breakdown
common lights 43,000
ventilation fans 30,000
cooling vent air 7,000
heating pumps 9,000
elevator 9,000
fire pump 611
controls and other 8,000
Total 106,611
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Energy Balance, Inc.
Energy Audit – Digging Deeper Getting the EKG!
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Energy Balance, Inc.
Energy Audit – Digging Deeper Getting the EKG!
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Energy Balance, Inc.
Energy Audit – Envelope� Air leakage
� Insulation� Windows� Doors
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Energy Balance, Inc.
Energy Goals
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Energy Balance, Inc.
Energy Goals
0
10
20
30
40
50
60
70
80
90
100
Business as
usual
Stop
shooting
yourself in
the foot
“Cost
effective”
investments
in energy
Avoidance
of future fuel
shock risk
Affordable
for next X
years
Perpetually
affordable
Carbon
neutral
Net zero
Perc
ent of curr
ent E
nerg
y U
se
Biomass
PV
ConventionalEnergy
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Energy Balance, Inc.
Energy Goals
0
10
20
30
40
50
60
70
80
90
100
Business as
usual
Stop
shooting
yourself in
the foot
“Cost
effective”
investments
in energy
Avoidance of
future fuel
shock risk
Affordable
for next X
years
Perpetually
affordable
Carbon
neutral
Net zero
Perc
ent of curr
ent E
nerg
y U
se Biomass
PV
ConventionalEnergy
30% to 50% solution
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Energy Balance, Inc.
Energy Goals
0
10
20
30
40
50
60
70
80
90
100
Business as
usual
Stop
shooting
yourself in
the foot
“Cost
effective”
investments
in energy
Avoidance of
future fuel
shock risk
Affordable
for next X
years
Perpetually
affordable
Carbon
neutral
Net zero
Perc
ent of curr
ent E
nerg
y U
se Biomass
PV
ConventionalEnergy
Micro-load solution
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Energy Balance, Inc.
Putting Together a Green Project� Design team, consultants and builder selection critical!
� Allow some additional time
�Willing and experienced? At least willing!
� Green champion critical!
� Green Geek necessary
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Energy Balance, Inc.
Putting Together a Green Project� Design team, consultants and builder selection critical!
� Check actual energy consumption of projects completed by design team members
� Past performance best indicator of future performance
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Energy Balance, Inc.
� Early budgeting with cost and savings projections
� During schematic design
� Pick a package of improvements
� Avoid death by 1,000 cuts
Putting Together a Green Project
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Energy Balance, Inc.
� Why not look at � First year rate of return?
� Payback?
� Cash flow� Use cash flow to minimize total investment + operating costs over time
Putting Together a Green Project
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Energy Balance, Inc.
Putting Together a Green Project
� Proforma budget with cash flowCash Flow Typical Upgrade
At LOW fuel escation rate
$70,000 Energy Cost without improvements, first year
$18,000 Energy cost savings, first year
$220,000 total cost of improvements; all borrowed
8.00% loan rate, fixed
20 year term
$22,000 annual payment
5% Fuel escalation rate, low,above inflation
15% Fuel escalation rate, high, above inflation
0% Inflation rate
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Energy Balance, Inc.
Proforma budget with cash flow
At LOW fuel escation rate
No Improvements With all recommended improvements
Year Energy Cost Loan payment Energy Cost Total Net
1 $70,000 $22,000 $52,000 $74,000 ($4,000)2 $74,000 $22,000 $55,000 $77,000 ($3,000)
3 $78,000 $22,000 $58,000 $80,000 ($2,000)4 $82,000 $22,000 $61,000 $83,000 ($1,000)
5 $86,000 $22,000 $64,000 $86,000 $0
6 $90,000 $22,000 $67,000 $89,000 $1,0007 $95,000 $22,000 $70,000 $92,000 $3,000
8 $100,000 $22,000 $74,000 $96,000 $4,0009 $105,000 $22,000 $78,000 $100,000 $5,000
10 $110,000 $22,000 $82,000 $104,000 $6,00011 $116,000 $22,000 $86,000 $108,000 $8,000
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Energy Balance, Inc.
Proforma budget with cash flowAnnual Energy + Debt Service Costs
(20 yr, 8% loan), Typical Upgrades
$0
$50,000
$100,000
$150,000
$200,000
$250,000
$300,000
1 2 3 4 5 6 7 8 9 10
Year
No improvements, 5% Fuel Escalation
with improvements, 5% Fuel escalation
No improvements, 15% Fuel Escalation
with improvements, 15% Fuel escalation
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Energy Balance, Inc.
� Include intangible benefits
� Health benefits
�Less stress on allergies, asthma
Putting Together a Green Project
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Energy Balance, Inc.
� Include intangible benefits
� Health benefits
� Stewardship/environmental benefits
�Green building on the continuum between land conservation and affordable housing
�Carbon reduction
Putting Together a Green Project
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Energy Balance, Inc.
� Include intangible benefits
� Health benefits
� Stewardship/environmental benefits
� Lower liability risk
Putting Together a Green Project
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Energy Balance, Inc.
� Include intangible benefits
� Community image
Putting Together a Green Project
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Energy Balance, Inc.
� Include intangible benefits
� Community image
� Insulation from rate shock
Putting Together a Green Project
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Energy Balance, Inc.
Putting Together a Green Project� Include intangible benefits
� Community image
� Insulation from rate shock
� Preparation for uncertainty of long term fossil fuel availability
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Energy Balance, Inc.
Neww to Green Projects?
� Work your way into green gradually –pick a good starting point and pick your battles
� Small project, or a few features in a larger project
� Case studies can be very powerful
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Energy Balance, Inc.
Developing a Workplan� Each phase supports the eventual goal
� Can do renewables first and conserve as those opportunities present. Order not critical
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Energy Balance, Inc.
Developing a Workplan
� Match plan to goals� Phasing: plan for implementation over appropriate time frame
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Energy Balance, Inc.
Developing a Workplan
� Match plan to goals� Phasing: plan for implementation over appropriate time frame
� Take best advantage of opportunities as they come – repairs needed, expansion, money that is out there.
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Energy Balance, Inc.
Developing a Workplan
� Match plan to goals� Phasing: plan for implementation over appropriate time frame
� Take best advantage of opportunities as they come
� Put efficiency work in context:� Maintenance, current and deferred� Other renovations
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Energy Balance, Inc.
Developing a Workplan
� Each time a part of the building is worked on, bring that part up to standards for eventual goal for entire building
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Energy Balance, Inc.
Vermont Studio Center
Present Value of Thermal Energy Costs + Retrofit Costs
at 5% Real Fuel Escalation Rate
$0
$1,000,000
$2,000,000
$3,000,000
$4,000,000
$5,000,000
$6,000,000
No improvements Base case Level 1 Improved Level 2 Best Level 3 Level 2 + 3
Retrofit Costs [4]
30 Year PV of OperatingCosts [5]
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Energy Balance, Inc.
Putting Together a Green Project
� Risk in doing something new – and risk mitigation
� Assess your risks
� Know your downsides and how to recover
� Leading edge versus bleeding edge
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Energy Balance, Inc.
Putting Together a Green Project
� Keep your eye on the ball – competing interests
� Square feet
� Time
� $$
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Energy Balance, Inc.
Project Follow-up
� On-going tracking – Celebrate successes, learn from set-backs
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Energy Balance, Inc.
Building Power Use (5-month rolling average)
10000
10500
11000
11500
12000
12500
13000
13500
14000
14500
Feb-05 May-05 Sep-05 Dec-05 Mar-06 Jul-06 Oct-06 Jan-07
kW
h
Energy Tracking over time
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Energy Balance, Inc.
Energy Tracking over time
PERFORMANCE DATA
ALL ENERGY SOURCES MMBtu
Btu/
sq.ft.-yr
kWh/
sq.m.-yr
Burlington Cohousing multi-family 1,812 69,000 217
Waterfront Housing multi-family 1,765 39,000 123
Evergreen Place elderly housing 469 27,000 85
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Energy Balance, Inc.
Taking care of our future
� Hedged future energy bills.� Ready for a changing energy world.� Improved tenant health.
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Energy Balance, Inc.
Celebrate and lead the way