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2010 IAPMO / WPC Emerging Technology Symposium - May 11-12, 2010
Troy Aichele
Aichele and Associates, LLC May 12, 2010
How to Calculate ROI’s for Water
Conservation Fixtures,
Equipment and Systems
2010 IAPMO / WPC Emerging Technology Symposium - May 11-12, 2010
Objectives
Learn the importance of ROI’s for building
owners
Learn what is necessary to accurately calculate
ROI’s for water efficiency upgrade projects
Learn how to effectively calculate water
efficiency upgrades ROI’s
2010 IAPMO / WPC Emerging Technology Symposium - May 11-12, 2010
Importance of ROI’s
1. 5 Year Paybacks represent a 20% return
2. Nothing will move forward without making
financial sense
3. Easier to Sell
4. Connects environmental responsibility with
smart business
5. Easier to gain upper management approval
2010 IAPMO / WPC Emerging Technology Symposium - May 11-12, 2010
ROI Calculation Requirements
1. Water, Waste, Natural Gas and Electrical Utility
Costs
2. Fixture / Equipment Counts
3. Fixture / Equipment Use Rates
4. Facility Work Days and Occupancy
5. Know Facility Hot Water Creation Method
6. Efficiency Upgrade Installation Cost
7. Estimated Annual Utility Rate Increase
8. Rebate Potential
2010 IAPMO / WPC Emerging Technology Symposium - May 11-12, 2010
Utility Costs
Obtain Utility Rates (1 Year Minimum)
– Water and Waste (CCF)
– Electric (kWh)
– Natural Gas
(therm)
2010 IAPMO / WPC Emerging Technology Symposium - May 11-12, 2010
Fixture / Equipment Counts
Walk Campus
– Obtain facility drawings
– Reserve enough time
(Depends on size of building)
2010 IAPMO / WPC Emerging Technology Symposium - May 11-12, 2010
2010 IAPMO / WPC Emerging Technology Symposium - May 11-12, 2010
Use Rates
Water Closet:
– 3 / Day (Women)
– 1 / Day (Men)*
Urinal:
– 2 / Day (Men)
Faucets:
– 1 Minute / Person / Day
Shower Use:
– 8 Minutes / Day
*3 / Day if no urinals
2010 IAPMO / WPC Emerging Technology Symposium - May 11-12, 2010
Use Rates
2010 IAPMO / WPC Emerging Technology Symposium - May 11-12, 2010
2010 IAPMO / WPC Emerging Technology Symposium - May 11-12, 2010
Measuring with Bucket and
Stopwatch
Measure twice
and average
Measure 10% of
similar devices
throughout facility
2010 IAPMO / WPC Emerging Technology Symposium - May 11-12, 2010
Plumbing Fixtures
2010 IAPMO / WPC Emerging Technology Symposium - May 11-12, 2010
Tank-Type Water Closets
2010 IAPMO / WPC Emerging Technology Symposium - May 11-12, 2010
Flushometer Water Closets
2010 IAPMO / WPC Emerging Technology Symposium - May 11-12, 2010
Dual-Flush Flushometer
Retrofit Kits
2010 IAPMO / WPC Emerging Technology Symposium - May 11-12, 2010
Urinals
2010 IAPMO / WPC Emerging Technology Symposium - May 11-12, 2010
Faucets
2010 IAPMO / WPC Emerging Technology Symposium - May 11-12, 2010
Showerheads
2010 IAPMO / WPC Emerging Technology Symposium - May 11-12, 2010
Kitchen Spray Nozzles
2010 IAPMO / WPC Emerging Technology Symposium - May 11-12, 2010
Plumbing
Equipment
2010 IAPMO / WPC Emerging Technology Symposium - May 11-12, 2010
Major Equipment
Record Manufacturer,
Model Number, Serial
Number, Flow Rates
and Electrical
Information
(especially booster
heater) and use rates
2010 IAPMO / WPC Emerging Technology Symposium - May 11-12, 2010
2010 IAPMO / WPC Emerging Technology Symposium - May 11-12, 2010
Ice-Makers, Air-Conditioning and
Refrigeration Equipment
2010 IAPMO / WPC Emerging Technology Symposium - May 11-12, 2010
Laundry Machines
2010 IAPMO / WPC Emerging Technology Symposium - May 11-12, 2010
Medical Vacuum Pumps
2010 IAPMO / WPC Emerging Technology Symposium - May 11-12, 2010
Plumbing
Systems
2010 IAPMO / WPC Emerging Technology Symposium - May 11-12, 2010
2010 IAPMO / WPC Emerging Technology Symposium - May 11-12, 2010
Boiler Stack Economizer
Water Recovery
Cost: $1,090
Water / Sewer Savings: 720 GPD
Return on Investment: 5 Months
2010 IAPMO / WPC Emerging Technology Symposium - May 11-12, 2010
Installation Cost
Rebate
Potential
Utility Rate Trends
$-
$1.00
$2.00
$3.00
$4.00
$5.00
$6.00
$7.00
$8.00
$9.00
2002 2003 2004 2005 2006 2007 2008 2009
Year
PeakWater$/CCFSewer$/CCF
10% 10 %
Utility Rate Trends…
Waste
Water
2010 IAPMO / WPC Emerging Technology Symposium - May 11-12, 2010
The Cost of Water and
Sewer / 100 Gallons Olympia, WA: $1.00
San Diego, CA: $1.38
Boston, MA: $1.05
El Paso, TX: $0.60
Omaha, NE: $0.53
Geneva, Switzerland: $1.95
Glasgow, UK: $2.86
Las Vegas, NV: $0.80 Source: “The World’s Water 2008-2009” by Peter H. Gleick
Utility Rate Trend Impacts
2010 IAPMO / WPC Emerging Technology Symposium - May 11-12, 2010
2010 IAPMO / WPC Emerging Technology Symposium - May 11-12, 2010
2010 IAPMO / WPC Emerging Technology Symposium - May 11-12, 2010
2010 IAPMO / WPC Emerging Technology Symposium - May 11-12, 2010
2010 IAPMO / WPC Emerging Technology Symposium - May 11-12, 2010
Activity
2010 IAPMO / WPC Emerging Technology Symposium - May 11-12, 2010
2010 IAPMO / WPC Emerging Technology Symposium - May 11-12, 2010
2010 IAPMO / WPC Emerging Technology Symposium - May 11-12, 2010
2010 IAPMO / WPC Emerging Technology Symposium - May 11-12, 2010
Rainwater Harvesting Assumptions:
– $1 / Gallon Installed
– System Size: 10,000 Gallons
– 50” Rain / Year
– 2,500 SF Roof
– 0.62 Gallons / SF of Roof / Inch of Rain per Year
– 85% Collection Efficiency
– Water Cost: $0.0025 / Gallon
– Sewer Cost: $0.0075 / Gallon
What is the ROI?
2010 IAPMO / WPC Emerging Technology Symposium - May 11-12, 2010
Objectives
Learn the importance of ROI’s for building
owners
Learn what is necessary to accurately calculate
ROI’s for water efficiency upgrade projects
Learn how to effectively calculate water
efficiency upgrades ROI’s
2010 IAPMO / WPC Emerging Technology Symposium - May 11-12, 2010