Reducing the Carbon Footprint of the Hyannis WPCF:

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Martin Moris Hood
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1 Reducing the Carbon Footprint of the Hyannis WPCF: Through Renewable Energy Production and Energy Efficiency Measures Rip Copithorn PE, BCEE Water Technology Leader Marc Drainville PE, BCEE, LEED AP Senior Project Manager Tuesday, April 24, 2012

2 Agenda Background History Energy Efficiency Improvements Green Energy Projects Funding/ Costs Project Details Connecting to a Local Utility Results Net Energy Reduction Carbon Footprint Reduction

3 Agenda Background History Energy Efficiency Improvements Green Energy Projects Funding/ Costs Project Details Connecting to a Local Utility Results Net Energy Reduction Carbon Footprint Reduction

4 Project Location Town of Barnstable, Massachusetts Cape Cod Population 45,200 Area 200 sq kilometers Elevation 11 meters Popular vacation area Seven villages One major WWTF Hyannis WPCF

5 Project Site Hyannis Water Pollution Control Facility (WPCF) 15.9 million liters per day wastewater treatment facility 7.45 million liters per day (current) Seasonal flows 4000 direct customers Primary treatment, secondary treatment, disinfection Sludge thickening Major septage receiving facility on Cape Cod Effluent disposal via groundwater

6 Hyannis WPCF

7 Hyannis WPCF Energy Usage $300,000 on energy consumption Electricity: $260,000 87% of total Natural Gas (heating): $20, % of total Diesel Fuel (generator): $20, % of total

8 The Cost of Power Cost of Power in cents/kw-hr

9 Agenda Background History Energy Efficiency Improvements Green Energy Projects Funding/ Costs Project Details Connecting to a Local Utility Results Net Energy Reduction Carbon Footprint Reduction

10 History Over 10 year effort to reduce net energy at the facility Kill-A-Watt Program Get off the Grid Effort Programs spearheaded by WPCF superintendent Peter Doyle

11 Kill a Watt Focus on energy efficiency Involves personnel to offer suggestions and contribute to the effort

12 Get off the Grid Combine energy efficiency with implementation of renewable energy Completed a wind study (2005) Found to not be cost effective without grants Completed a study to determine how to get off the grid with solar (2006) Found to not be cost effective without grants

13 Agenda Background History Energy Efficiency Improvements Green Energy Projects Funding/ Costs Project Details Connecting to a Local Utility Results Net Energy Reduction Carbon Footprint Reduction

14 Energy Efficiency Improvements Why $1 Conserved = $5 Generated Energy Utility grants What Added VFDs to a number of pumps Upgraded aeration control system Added two white roofing systems Enhanced controls and automation through SCADA

15 Energy Efficiency Improvements % reduction in eight years 0 Apr-01 Sep-02 Jan-04 May-05 Oct-06 Feb-08 Jul-09 Nov-10 Apr-12

16 Energy Use Hyannis WPCF kwhr Year MAS - kwhr MSA MSB Total MSB - kwhr Total - kwhr

17 Energy Use Hyannis WPCF Implemented Dual Loop Control of Aeration kwhr Year MAS - kwhr MSA MSB MSA Total MSB Total MSB - kwhr Total - kwhr VFD added to one Effluent Pump and white roofing systems

18 Agenda Background History Energy Efficiency Improvements Green Energy Projects Funding/ Costs Project Details Connecting to a Local Utility Results Net Energy Reduction Carbon Footprint Reduction

19 Massachusetts Energy Management Pilot Hyannis WPCF was invited to participate in pilot program sponsored by Massachusetts Department of Environmental Protection (MassDEP) Energy Management Pilot Program was designed to allow facilities to share energy reduction experiences

20 Massachusetts Energy Management Pilot Then came the American Recovery and Reinvestment Act (ARRA) March 2009 Town received up to $9 million grant Green Energy Projects had to be authorized by Town, designed, bid, awarded and signed up by January 15, 2010

21 Green Energy Projects 819 kw Ground-Mounted Solar Array Two-100 kw Wind Turbines Energy Efficiency Improvements

22 Green Energy Projects Funding through the American Recovery and Reinvestment Act (ARRA) and local utility Barnstable PV Array is the second largest of twelve installations at public water and wastewater treatment facilities in Massachusetts being funded by federal stimulus funded contracts. The twelve contracts will add 4.1 megawatts of solar capacity to the state s Renewable Energy Portfolio.

23 Energy Efficiency Improvements Reducing the plant s current energy usage through: Pacing nitrogen recycle pumps (influent flow, ORP) Pacing blowers in the Septage Building off of tank level Pacing scrubber off actual air required to be treated

24 PV Design Considerations Corrosive Environment Proximity of Trees ARRA funding

25 Solar Array Solar Array Model Quantity Nameplate Rating Tilt Angle Azimuth Kyocera KD210-LPU 3900 Modules 819 kw 20 Degrees 158 Degrees

26 System Components DC/ AC Inverter Transformer (High Voltage) REC Meter Grid Utility Meter Switchgear

27 Wind Turbine Design Considerations Proximity to Regional Airport Location in Populated Area Visual Flicker Sound ARRA Funding Visual Impact Study Flicker Study Sound Impact Estimate

28 Proximity to airport First FAA permit expired at start of project Revised permit lowered turbine height Change in flight paths Led to greater focus on PV

29 Visual Impact Study Photosimulation Viewpoint Locations Rendering: Enterprise Rd and Corporation St

30 Flicker Study December 21

31 Estimate of Sound impacts Dominant sound nearby (on-site) is the slow, white-noise whooshing sound of the blades cutting through the air

32 MA DEP Noise Policy Allows increase of up to 10 dba at the nearest residential or the nearest property line.

33 Wind Turbines Wind Turbines Model Northwind 100 Quantity 2 Nameplate Rating 100 kw (ea) Hub Height 30 meters Overall Height 40 meters Rated Wind Speed 14.5 m/s

34 System Components Transformer (High Voltage) REC Meter Grid Utility Meter Switchgear

35 Net Metering Why? Energy production can exceed demands of facility Major upgrade of existing switchgears would be needed due to new codes How? Electric bill offset by energy production

36 System Schematic RE MSA MSB

37 Utility Interconnection Hyannis, MA Submitted Interconnection Application Paid Impact Study Presentation of Impact Study Results System Upgrade Wind Turbine Witness Test January 2010 July 2010 September 2010 June 2011 Responded to Technical Questions from Utility Impact Study Commenced Engineering Associated with Impact Study Results (and severe winter weather) Certificate of Completion Issued Impact on Construction

38 Project Costs Project Cost Wind Turbine Construction $1,400,000 PV Array Construction $4,340,000 Energy Efficiency Improvements Construction $60,000 Total $5,800,000 Projected to be a 100% grant

39 Recurring Costs Recurring Costs Annual Fees Wind Turbine Maintenance $2,500 - $5,000 Cell Phone Plan $1,200 Powerdash Monitoring $2,500 Insurance (year one only) $8,500 Primary Service Connection Fees $10,800

40 Renewable Energy Payback Simple Payback Current Typical None Wind Turbines - Do not proceed 45 Years PV Array years 26 Years Combined System Near 0 8 years 31 Years Details Avoided Energy Costs Funding

41 Energy Efficiency vs. Renewable Energy Costs Wind Turbine = $1.4 million Solar Array = $4.3 million Energy Efficiency = $60,000 (incl utility grant) Offset Costs Wind Turbine = $40,000 Solar Array = $160,000 Energy Efficiency = $12,000 Costs Energy Produced Energy Efficiency Wind Solar Energy Efficiency Wind Solar

42 Efficiency vs. Renewables ACTUAL RATIOS FOR CURRENT PROJECT Portion Energy Efficiency: Renewables (typical) Energy Efficiency: Wind Energy Efficiency: Solar Ratio 1:5 1:27 1:20

43 Agenda Background History Energy Efficiency Improvements Green Energy Projects Funding/ Costs Project Details Connecting to a Local Utility Results Net Energy Reduction Carbon Footprint Reduction

Benefit 80% reduction projected over ten years 2000000 1800000 1600000 1400000 kwhr 1200000

44 Benefit 80% reduction projected over ten years kwhr Year

45 Environmental Benefits Significant reduction in plant s net energy consumption Total Projected Carbon Emissions Offset: over 590,000 kilograms (650 tons) CO 2 /yr Equivalent to offsetting the carbon emissions of 120 average households

46 QUESTIONS? Contact information:

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