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Sustainability for Rural Alaska in the 21 st Century Reliable, Efficient, Community Supported Electric Utilities and the Successful Integration of Renewable Power. _______________________. Presented by John Lyons and Steve Drouilhet International Wind-Diesel Conference March 9, 2011.

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  1. Sustainability for Rural Alaskain the 21st CenturyReliable, Efficient, Community Supported Electric Utilitiesand the Successful Integration of Renewable Power _______________________ Presented by John Lyons and Steve Drouilhet International Wind-Diesel Conference March 9, 2011

  2. Main Office in Anchorage, Alaska With branches in: Deadhorse, Alaska Kaktovik, Alaska Roseville, California Heber City, Utah Honolulu, Hawaii McLean, Virginia

  3. Alaska’s Rural Power Specialists Marsh Creek’s staff has extensive experience with both fossil fuel and renewable based generation in diverse locations. • Fossil Fuel Generation –Marsh Creek develops and maintains power plants of all sizes, utilizing both liquid and gaseous fuels. • Renewable Energy –Marsh Creek designs, constructs, and supports unique wind-diesel hybrid systems and small hydro. • Hybrid Technologies –Marsh Creek is an industry leader in integrating renewable technologies with base load fossil fuel generation for stand alone, critical system/high-reliability requirements. _______________________

  4. Marsh Creek Capabilities Village Power Group • Operations and Maintenance • On Site Training and Migratory • Field Service Technicians • Funding Search Assistance • LED Street Lighting • Renewable Resource Assessments • Integration Engineering, Project • Design and Construction • Pre-Pay Electric Meters – • Installation and Support • Utility Management Assistance • Monthly Customer Billings • Monthly Ledger and PCE Reports • to AEA • Regulatory Commission of Alaska • Annual Reports • DOE Annual EIN Reports • Fuel Farm Management Assistance • Fuel Loan Application Assistance • Rate Analyses Reliable - Efficient - Renewable _______________________

  5. Integrating renewable resources has created hope for affordable energy. BUT… Hybrid projects will not succeed without a well maintained diesel plant and a well managed electric utility. _______________________

  6. Kokhanok Electric A Tribally Owned Utility Keeping the Lights On _______________________

  7. Located at the southern tip of Lake Iliamna, Kokhanok often faces flying fuel in when the Kvichak River is too low for the fuel barge. Steps taken to be sustainable, reliable, and more affordable for their customers 1: Installed pre-pay electric meters and contracted for utility management assistance 2: Increased the efficiency of their diesel plant & balanced their distribution system 3: Decided to integrate an available renewable resource with their diesel plant when fuel hit $7.20/gallon in 2008 _______________________

  8. High Penetration Wind-Diesel System • 2009 - Village Council and Lake and Pen Borough committed to develop the Class 6 wind resource • Borough issued an RFP for the design and development of a hybrid wind project • Marsh Creek was awarded the engineering, procurement, and construction contract on July 11, 2009 • Timeline: • May 2010 – Construction began • October 2010 - Ribbon cutting • December 2010 – System testing began _______________________

  9. Wind Turbines Installed in Kokhanok • Vestas V17 • 90 kW wind turbines • 85 foot lattice towers • 56 foot rotor (swept area) • Manufactured in 1991 • Remanufactured by Halus Power Systems - 2010 _______________________

  10. Vestas V-17 Turbine Remanufacturing • Rewound generator • Rebuild brake system • Replace yaw motors and gears • Install new bearings in high speed shaft • Remanufactured gear box • Replace all original Vestas controls with state of the art • web-based controls • Paint blades black to assist in deicing • Stainless steel bolts and fasteners • One year full warranty (same as a new turbine) ______________________

  11. High Penetration Wind-Diesel System in Kokhanok • System Overview: • Two (2) Vestas V-17 turbines (90kW) • Four (4) John Deere Gensets (60kW, 115 kW, 160 kW, 160 kW) • Grid forming inverter (200kVA) • Battery storage (336 kWh nominal) • Synchronous condenser (240kVAR) • Electric boiler and secondary load controller (240 kVA) _______________________

  12. High Penetration Wind-Diesel System in Kokhanok • Substantial plant controls upgrade. • Remote operations monitoring and control. • Wind system operator training. • Five (5) year O&M support contract with Marsh Creek. • Total Project Cost: $1.94 M Funding: USDA RUS ______________________

  13. High Penetration Wind –Diesel Power in Kokhanok • Project Benefits: • Diesel fuel savings estimated at between 30% to 50% annually • 2010 average cost of fuel $4.90/gallon • Further heating fuel savings at • school complex - 8,886 gals. • The cost to produce power will go down as less diesel is consumed _______________________

  14. Anchorage Office: 2000 E 88th Avenue Anchorage, AK 99507 Phone: (907) 258-0050 Fax: (907) 279-5710 Contact: John Lyons, Division Manager Alternative Energy Systems john.lyons@marshcreekllc.com

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