MWRA Deer Island Wind Projects Kristen Patneaude

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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



On average, MWRA delivers 200 million gallons per day to its water customers, with a peak demand of 350 million gallons



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



Cost Savings – Ratepayer money



Operations – Equipment replacement



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



2nd Largest Wastewater Treatment Plant in the United States



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



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







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



FAA Height Restrictions – limited to 190 ft AGL (hub ~110’; blades ~75’)



Design-Build Contract Award – October 2008 (Lumus Construction – Vestas RBB unit) – Turbine commissioned November 2009



$4M Total Cost $400k MTC grant



Production 2M kWh/yr (over 200 homes) – $220k/yr electricity savings and RPS revenue



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



Development of Mixer Ejector Wind Turbine – claims of higher efficiency than traditional wind turbine



DITP location ideal – favorable wind resources, existing industrial facility, MWRA staff experience and knowledge with wind technology



No cost to MWRA other than staff resources in planning



All electricity generated fed directly to DI grid



FDWT providing 7-yr O&M at no cost to MWRA



License agreement issued to FDWT



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



MA Clean Energy Center (formerly Massachusetts Technology Collaborative) – Community Wind Collaborative – LORI Program – Commonwealth Solar – Commonwealth Wind – Commonwealth Hydro – www.masscec.com



Clean Renewable Energy Bonds (CREBs)



ARRA Stimulus Funding – State Revolving Loan Fund (SRF) – Green Infrastructure – MA Solar Stimulus



Power Purchase Agreements

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MWRA Future Energy Initiatives



Hydro – Continue to explore hydropower development potential



Wind – Conducting feasibility study for 4th wind turbine at Deer Island



Solar – Comprehensive solar assessment ongoing



Demand Side Management – Continue energy audits, process control optimization, demand response, EMS installation



Grants/Rebates – Seek funding assistance opportunities



Other Sustainable Efforts – alternative fuel vehicles, green power purchase, energy efficient computing, recycling



Co-digestion – acceptance of food waste for additional biogas/methane 18

Massachusetts Water Resources Authority

Thank you. Questions?

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