1. Data Driven Energy Audit Strategies
Bennett Fisher
Founder & CEO
bfisher@retroficiency.com
Phone: 202-744-4000

2. Even the experts agree – today’s audit process is
frustrating at best
Most Challenging Phase of Building Retrofit
Retrofit Projects Market Opportunity
(Survey of Auditors)
Non-Financial Execution
Challenges
$400B
Potential Projects
$60B
Realized Projects
Source: Pike Research
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3. Organizations must answer these key questions to
achieve a positive energy assessment outcome
How many buildings
1 do I want to evaluate? Many One
2 What information do Energy Consumption Building Asset
I have available?
What resources are
3 appropriate given Manual Analytics Models
project scope?
What do I want the
4 outcome to be?
ECIs ECMs
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4. Focus on the buildings that matter, and not those
that don’t
1 Distribution of Portfolio Savings Potential
Current Potential % of Savings Potential
Spending ($) Savings ($)
Building #1 $671,973 $250,626
Building #2 $939,946 $250,461
Building #3 $650,101 $220,326
Buildings
Building #4 $1,146,006 $205,087 #1-#6:
Building #5 $2,270,114 $104,701 75%
Building #6 $308,458 $61,706
Buildings
Building #7 $986,329 $59,251
Building #8 $225,025 $57,031
#7-#16:
Building #9 $418,305 $55,640
25%
Building #10 $421,414 $54,266
Building #11 $275,883 $38,989
Building #12 $334,848 $33,405
Building #13 $187,604 $28,243
Building #14 $2,743,762 $24,411
The top 6 of 17 buildings
Building #15 $112,285 $9,394 (35%) in the portfolio have
Building #16 $248,664 $0 75% of the savings potential.
Building #17 $217,591 $0
Total $12,158,308 $1,453,537
Note: Building sample set from single utility portfolio.
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5. Interval and asset data can deliver insights, but
should be used at different phases of the audit
2 Energy Interval Data Building Asset Data
• Granular consumption data • General characteristics to
Definition (e.g., readings every 15 minutes) detailed energy systems in the
building
• Request from utility • Interviews with owner /
How You
• (Larger) building operator
Get It owners/operators may have • Building walk-through
• Identify no-/low-cost operational • Scoping phase
When You
opportunities • Deliver detailed audit
Use It • Determine retrofits to investigate recommendations
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6. Determine the approach that strikes the right
balance between time, cost and measure(s)
3 Traditional Emerging
Spreadsheets Detailed Modeling Analytics-Based
• OK for lighting projects • Systematic input approach
• Complex building models
• Difficult to do more
• Streamlines benchmarking
Overview • Appropriate for highly
complex systems and • Rapidly calculates potential
customized projects
ECM interaction measures
Ease of Use Moderate Difficult Easy
Time
Investment Varies Significant Limited
Required
Expertise Some High Some
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7. ECIs help hone in on the right opportunities; ECMs
should be developed closer to implementation
4 Energy Conservation Indicators Energy Conservation Measures
• Lighting intensity is high during • Condensing gas boiler with a 91%
unoccupied hours combustion efficiency
• Appears to be simultaneous heating • Super T8 fixture with 3 30-watt lamps
and cooling in building and electronic ballasts
• Cooling system running constantly • Install air side economizer control with
during high cooling degree days and dry bulb changeover control
may be undersized
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8. Given those answers, managers should consider the
best option given available time and budget
Benchmark Level I Level II Level III
Minutes or Weeks or
Time: Hours
1-2 Days 3-5 Days
Months
Budget: <$500 $5K-$7.5K $10K-$20K $35K-$50K+
How many
1 buildings do I Many One
want to evaluate?
2 What information
Energy Consumption Building Asset
do I have available?
What resources are Spreadsheets Complex Model
3 appropriate given
project scope? Analytics
4 What do I want the
ECIs ECMs
outcome to be?
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9. Questions
Any Questions?
Retroficiency, Inc.
www.retroficiency.com
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