MWRA Deer Island Wind Projects Kristen Patneaude Program Manager, Energy Management MWRA
Environmental Business Council of New England Energy Environment Economy
Massachusetts Water Resources Authority
Presentation to Environmental Business Council
Deer Island and Wind Energy October 1, 2013
Kristen Patneaude, Program Manager Energy Management
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Massachusetts Water Resources Authority
AGENDA • Overview of MWRA/Deer Island • Deer Island Energy Profile • Deer Island Wind Energy – Planning Steps – Procurement – Project Details – Lessons Learned • Future Energy Initiatives 3
MWRA Service Area •
MWRA provides wholesale water and wastewater services to over 2.5 million customers in 61 communities
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On average, MWRA delivers 200 million gallons per day to its water customers, with a peak demand of 350 million gallons
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MWRA collects and treats an average of 360 million gallons of wastewater per day, with a peak capacity of 1.2 billion gallons
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MWRA Drivers for Energy Efficiency Focus
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Cost Savings – Ratepayer money
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Operations – Equipment replacement
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Environmental agency – MWRA has been successfully meeting the goals established in Governor Patrick’s Executive Order 484 (April 2007) – Goals include: - Overall Reduction of Energy Consumption - Increase Renewable On-site Energy Production - Purchase of Renewable Energy
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Deer Island Treatment Plant •
$3.8 Billion Construction Project
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2nd Largest Wastewater Treatment Plant in the United States
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Treatment Capacity: – Maximum • 1.27 Billion Gal/Day combined sewer system • Up to 700 MGD by Secondary Treatment – Average Daily Flow: • 365 Million Gal/Day
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Built on 200 Acres – includes 60 acres of public access area
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Deer Island Electricity – 160,000,000 kWh (~18MW)
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Deer Island Electricity – by Source
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DITP Wind – Pre-Planning
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Data Collection – DITP SODAR (2004) – we did a few months, typically one year – Regional Data Sources to supplement SODAR – Later projects are using met towers for 1-2 years of data Feasibility Study – Wind Resource Assessment – Site Electrical Infrastructure – Permitting – Energy Production – Cost Analysis (rough target of 10-12 year payback) Funding – SODAR Wind Monitoring (UMASS RERL equipment/report) – Feasibility (MTC - $50k) – Design/Construction (MTC - $400k ~10% of our cost)
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DITP Wind – Permitting
• FAA – 1st filing 2005 (height restrictions limited sizing of turbine) – Approval 2008 – Limited to 210’ AMSL (~190’ AGL) – Two turbines initially, then one at a time after 60 days operation • Community – No objections or complaints to date – Very visible and accessible site • MA Department of Public Safety (DPS) – Building – Electrical • Utility Interconnection – All power consumed on-site. No agreement required by NSTAR 10
DITP Wind – Procurement
• Conventional Design-Bid-Build (c. 30) • Alternative Design-Build (c. 25A – for “energy” projects) – Design can overlap with initial construction activities – Contractor responsible for turbine selection based on client specifications , e.g. size, availability guarantee, warranty – Evaluation options (best $/kWh or low-bid $)
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DITP Wind – Project Details
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FAA Height Restrictions – limited to 190 ft AGL (hub ~110’; blades ~75’)
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Design-Build Contract Award – October 2008 (Lumus Construction – Vestas RBB unit) – Turbine commissioned November 2009
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$4M Total Cost $400k MTC grant
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Production 2M kWh/yr (over 200 homes) – $220k/yr electricity savings and RPS revenue
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Maintenance – 1st yr included in warranty – $60 - $100k/yr for TWO – By years 4-5 likely have a spike in maintenance costs 12
Deer Island Wind - Construction – Need Laydown Area
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Deer Island Wind - Visual Impact
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Pilot Project – FloDesign Wind •
FloDesign Wind Turbine Corporation (FDWT) – MA manufacturer
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Development of Mixer Ejector Wind Turbine – claims of higher efficiency than traditional wind turbine
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DITP location ideal – favorable wind resources, existing industrial facility, MWRA staff experience and knowledge with wind technology
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No cost to MWRA other than staff resources in planning
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All electricity generated fed directly to DI grid
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FDWT providing 7-yr O&M at no cost to MWRA
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License agreement issued to FDWT
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Commissioned May 2011 15
Lessons Learned
• Maintenance – costs and PR impacts when off-line; very visible • Spare parts availability; is there local tech support • Public Acceptance – industrial sites are preferred choice • Operational supervision ; include condition monitoring system – For internal components and possibly foundation
• Low electricity rates impact payback; DI is $0.09/kWh • Grant funding needed for improved economics
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Funding of Renewable Energy Projects
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MA Clean Energy Center (formerly Massachusetts Technology Collaborative) – Community Wind Collaborative – LORI Program – Commonwealth Solar – Commonwealth Wind – Commonwealth Hydro – www.masscec.com
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Clean Renewable Energy Bonds (CREBs)
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ARRA Stimulus Funding – State Revolving Loan Fund (SRF) – Green Infrastructure – MA Solar Stimulus
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Power Purchase Agreements
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MWRA Future Energy Initiatives
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Hydro – Continue to explore hydropower development potential
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Wind – Conducting feasibility study for 4th wind turbine at Deer Island
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Solar – Comprehensive solar assessment ongoing
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Demand Side Management – Continue energy audits, process control optimization, demand response, EMS installation