Presented by PEDC Sustainable Energy Subcommittee Gary Gump Chairman April 03, 2009

1. Portsmouth RITown Wind Turbine GeneratorEBC RI Chapter ProgramRI Energy Programs – Federal Stimulus, RGGI and Renewable Energy Fund Presented by PEDC Sustainable Energy Subcommittee Gary Gump Chairman April 03, 2009 www.portsmouthRIenergy.com

2. Green is Good BUT.. Building a WTG is an Economic Decision

3. Needs • Wind • Space • Support • and “all the other things”

4. Wind and Space • Sufficient Wind to Generate Power • Wind Models or Met Tower? • Capacity Factor • Wind Doesn’t blow all the time • Typically CF is 20%-30% over a year • Space • NIMBY • Some concerns over catastrophic failure • Ice slinging • The higher the better • Power proportional to cube of wind speed

5. Support • WTG is a ‘community investment’ • Provide current and balanced information and address “hot buttons” • Counter “misinformation” • Affect on wildlife • Sound • Visual affect • Public Relations • Need initial buy in • Continual positive reinforcement • Portsmouth did: • Web Site: updated frequently, FAQs • Mail Survey • Public Workshops • Referendum • Create Community “Ownership”

6. … and All the Other Things • Federal/State Legislation • Liaison with State Officials • Large Equipment Access to Site • Geology • Environment/Health/DEM • Affect on Wildlife • Historical/Archeological • FAA • Town Zoning • Permitting • Risk Management • Project Management • Wind Model • Economic Model • Choosing a contractor • Warranties • Insurance • Operation and Maintenance • How to Pay for It • Revenues - Distribution • Electric Interconnect • Public Utilities Commission • Federal Energy Regulatory Commission • Funding

7. Portsmouth Wind Turbine Project Timeline 2004-05 - Ideas - Exploratory - Decision to go forward With a plan 2006 Feasibility Study Jul 06 – Sep 07 2008 2007 2009 CREB Approved Nov 06 Workshop With TC Feb 07 TC/SC Project Approval Oct 07 Sign Turbine Contract Apr 08 State Grant Approval Apr 06 Request Bond Legislation Jan 07 Report Feasibility Study to TC and SC Sep 07 Wind Project Bond Referendum Nov 07 Installation Preparations Apr 08 – Nov 08 RFQ for Turbine and Turbine Install Dec 07 Feasibility Study Consultant RFP II Feb 06 CREB Application Submittal Apr 06 Turbine Commissioning March 09 YES Referendum Ballot for Project TC/SC Approve Project? YES PEDC Sustainable Energy Subcommittee Members Gary Gump, Chair Bob Hamilton Doug Smith Steve Lake John Palmieri Rich Talipsky NO NO

8. 98958 98958 98958 98958 Power Generation and the “Grid” (Behind-the-meter (Pre-2008 Laws)) 600 kW Turbine Production about 1,500,000 kWh/yr The “Grid” “Behind the Meter” High School Turbine Supplied Electricity Electricity Used (retail) HS Meter Other Town Meters Electricity Supplied (wholesale) High & Middle School average about 950,000 kWh/yr each Portsmouth RI EDC June 2007

9. 98958 98958 98958 98958 98958 Power Generation and the “Grid” (Per 2008 Law) The “Grid” 1.5 Mw Turbine Production about 3,300,000 kWh/yr Turbine Supplied Electricity Credit for WTG Power Produced High School HS Meter Other Town Meters “Virtual” Electric Meter Municipal Total +/- 4,200,000 kwH/yr Portsmouth RI EDC June 2007

10. March 2008

11. April 2008

12. May 2008

13. August 2008

14. August 2008

15. August 2008

16. August 2008

17. January 2009

18. January 2009

19. January 2009

20. February 2009

21. February 2009

22. March 2009

23. Total Height (base to blade tip)------ 336 Feet Height Above Sea Level (to base) – 188 feet Total Height Above Sea Level (to blade tip) – 524 Feet Blades –------------------------ 123 Feet, 6 Tons each Blade Hub – Diameter ------ 15 Feet., 19 Tons Tower height to Hub –------ 213 Feet 3 sections -------------------- 115 Tons total Nacelle –_____________12X15 Feet – 68 Tons Total Weight –-------------------------------- 440,000 Pounds On-Line March 2009

24. Portsmouth Municipal Wind Energy Activity • See www.portsmouthRIenergy.com • Questions: e-mail questions@portsmouthRIenergy.com