energy savings performance contracting case study
TRANSCRIPT
Monroe Metropolitan Wastewater Facility Energy Savings Performance Contracting
Case Study
October 20, 2015
Critical Issues
Maintain Sewer Rates
High Energy Costs
Reduce Operational Risk (Equipment Failure)
Continued Need to Upgrade Infrastructure
Lack of Capital Funds for Upgrades
Meeting Permits and Regulatory Demands
2
Facility Improvement Measures (FIM) Bolded Included in Project with Initial Design
FIM1 Sludge Dewatering
FIM2 Heating System Improvements
FIM3 Ultraviolet Disinfection Cover
FIM4 Lighting & Occupancy Controls
FIM6 Settled Wastewater Pumps
FIM7 Collection System (Pump Stations)
• Improvements @ Detroit Beach & Sunset Beach Lift Stations
FIM10 Weather Proofing
FIM11 Power Factor Correction
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Focus of Case Study
FIM1 Sludge Dewatering
Existing (2) Centrifuge Machines Failures are Costly
and Include Long Downtime
Existing Equipment Past useful Life
Evaluated Different Replacement Technologies
Existing Equipment Noisy and Energy Intensive
FIM2 Heating System Improvements
Original System Installed in 1935
Evaluation Addressed Boilers, Distribution Piping,
Gas Piping, Rooftop Units, Make-up Air Units, Unit
Heaters, Radiation, Pumping, Wiring, Valves and
Controls
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Original Vacuum Filters replaced with (3) Belt Filter Presses on 2nd floor of
Equipment Building
Belt Filter Presses were abandoned in place in 1993
(2) Centrifuges installed on 1st floor
Dewatering technology selection prepared by URS before Energy Savings
Performance Contract
JCI and URS teamed to develop and deliver the project
Monroe Sludge Dewatering History
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Cost Effective Solutions How to Get More Done Within a Finite Budget
Dewatering (cost effective enhancements to original design)
Reduced number of presses (4 to 3)
Modify conveyor design by moving chute location (reduced total conveyor
length)
Refurbished belt press basins, handrails and grating
HVAC Cost Effective Enhancements
Refurbished HVAC-2 vs. replacing
Changed to condensing boilers (reduced boiler cost, installation cost and are
more efficient)
Reconfigured MCC to allow for new equipment vs. Adding MCC
Installed new walls to decrease volume of air changes (reducing energy cost)
Facility Improvement Measures (FIM)
FIM1 Sludge Dewatering
FIM2 Heating System Improvements
FIM3 Ultraviolet Disinfection Cover
FIM4 Lighting & Occupancy Controls
FIM6 Settled Wastewater Pumps
• (3) 250 HP Motors and Variable Speed Drives
• (3) New 36” Check Valves
• New U-joints & Couplings
FIM7 Collection System (Pump Stations)
Detroit Beach (50 HP Pumps) & Sunset Beach (100 HP Pumps)
• (3) New Motors & Pumps @ Each Lift Station
• (2) New VFD’s @ Each Station
• (8) New Knife Gate Valves & (3) New Check Valves @ Each Station
• All New Shafts, U-Joints & Couplings
FIM10 Weather Proofing
FIM11 Power Factor Correction
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Dewatering Improvements
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Dewatering Improvements
Installed new walls to decrease volume of air changes
New Screw Presses get a new home
New ductwork, lighting and paint
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Dewatering Improvements
(3) FKC Screw Presses
19,000 lbs. each
20 ft. long, 6ft. Tall
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Dewatering Improvements
Repurposed Space to Accommodate New Pumps
(3) New Sludge Pumps (existing pumps on first floor)
Variable Speed Drives
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Dewatering Improvements
Reused Existing Basins
Simplify Conveyor System
Refurbish and re-used hand rails
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Dewatering Improvements
Re-use Existing Polymer Tanks
New Polymer Feed Pump Skids
New Controls
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Next Generation Dewatering System Complete!
Dewatering Improvements
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Dewatering Improvements
HVAC Improvements
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HVAC Improvements Dewatering Room Ventilation
Eliminated HVAC-1
Refurbished HVAC-2
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HVAC Improvements Dewatering Room Ventilation
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Dewatering Ventilation System Complete!
HVAC Improvements Dewatering Room Ventilation
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Reconfigured Heating System to Variable Primary Pumping
New Pumps, VSD’s, Piping, Insulation, Controls, Conduit, Wiring, Etc.
Reused Housekeeping Pads
HVAC Improvements Equipment Building Boiler Room
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Boiler 1 Serves as Emergency Backup only
Replaced Boiler 2 (primary boiler)
Reused Housekeeping Pads
HVAC Improvements Equipment Building Boiler Room
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HVAC Improvements Equipment Building Boiler Room
Equipment Building Heating System Complete!
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Installed & Relocated New High Efficiency Condensing Boiler
Installed New EcoCirc Pumps, Piping & Control/Control Panels
Replaced All Piping Including New Baseboard Radiation
Flushed and Cleaned Entire System
HVAC Improvements Administration Building Heating System
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Administration Building Heating System Complete!
HVAC Improvements Administration Building Heating System
Baseline Annual Utility Costs (2011/12): $627,781 Annual Utility Savings: $114,349 Net Operations & Maintenance Impact: $240,711 Total Annual Program Benefit Available to Fund FIMs: $355,060
Savings Analysis
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Program Cost: $10.39M
Total 1st Year Energy & Operational Benefits: $355k
Estimated Utility Rebates: $53k
CIP Funds Allocated Over the Term: $3.74M
Funding:
Qualified Energy Conservation Bonds (QECB)
State of MI and Monroe County - QECB Allocations
Effective Interest Rate Approximately 1.2%
Will Meet Required 20% Energy Savings Required by QECB
Improvements Funded Through Existing Rate Model (Not Dependent on Future Rate Increases)
Savings Analysis
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Self Funded Solutions (Not Dependent on Rate Increase)
Guaranteed Outcomes (Savings, Cost, Performance)
Transfer of Liability to ESCO (Reduced System Risk Through
Guarantees Placed on Technology)
Turnkey Approach…Single Point of Accountability
Budget Integrity and Fixed Expenditures
Operational Integrity (Replacing Aging Equipment Prior to Major
Failure)
Strong, Experienced Local Team w/National Capabilities
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Program Benefits
Business Development Activities
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This document is proprietary and confidential to Johnson Controls, Inc.
Activity Date Cost Notes
Michigan Association of Counties (MAC) March 26-
28
$875– Booth
2 Night Hotel
Meals/Giveaways
≈$1,475 For 1
MAC Annual Conference-Lansing Center
Michigan Local Government Management
Association (MLGMA)
June 13 $3
Michigan Municipal League (MML) April TBA $1,500 Capital Conference -Information Not Available
Michigan Chapter AWWA September $575– Booth/Full Reg
2 Night Hotel
Meals/Giveaways
$0 -1 Day Speaker
≈$1,275 For 1
Annual Conference - TBD
Michigan Water Environment Association
(MWEA)
June 23-27 $500 – Booth Only
2 Night Hotel
Meals/Giveaways
$0 -1 Day Speaker
≈$1,200 For 1
Annual Conference - Boyne Mountain Resort
Work to get Speaking Engagement
Questions