Windplanner’s 100 k. W Wind Turbine Project for CHRHS Presented by: The Windplanners
This presentation will address: • Education • Data • Projected Savings • Turbine Location and Details
The first reason is • The turbine on campus and the data education! generated and the process to date has and will continue to provide a wide variety of authentic learning opportunities. • This will be a demonstration site for community-scale wind that is easily accessible in the midcoast. • We want our school campus to symbolize the kind of society we want and need to become.
6 years of History • New School - Incorporated some renewable technology (geothermal) despite this, operating costs were higher than expected. Efficiency measures taken. What else could we do? Windplanners was established. • MET data - UMass results: wind resource is marginal but viable for this site. • Town ordinance written • Data challenge • UMass third party review
Data Summary Original Wind Speed (m/s) Adjusted Wind Speed (m/s)* Output Range (k. W/yr) *** 3. 75 4. 38** 88, 000 - 122, 000 UMass Buoy 4. 33 101, 150 UMass Portland 4. 15 75, 000 UMass Augusta 5 125, 000 UMass Conclusions 4. 5 - 5. 0 99, 000 - 125, 000 UMass High Estimate 5. 5 190, 000 MET Tower @ CHRHS *The analysis by UMASS is viewed as the Due Diligence for this project. The Adjusted Wind Speed corrects for any inter-annual variations of wind speed and the method UMASS used is an accepted method within the industry. **The adjusted speed of 4. 38 m/s was calculated by Hillary Hanson and Bill Hopwood. The original work was misfiled, so the history of this calculation is lost. ***Output estimates were provided by Northern Power and UMASS.
Wind Data February 2006 – July 2007
What does $510, 000 buy? w/ controls: $380, 000 • NPS 100 k. W wind machine • Transportation to site: $10, 000 • Engineering and permitting: $20, 000 • Electrical components: $15, 000 • Site Work: $15, 000 • Foundation: $25, 000 • Turbine installation: $15, 000 • Electrical Contractor: $25, 000 • Startup and commission of machine: $5, 000
Funds Raised to Date Maine Community Foundation $7500 Unity Foundation $500 FMC $300 Stephen and Tabitha King Foundation* $35, 000 Anonymous $40, 000 Anonymous $60, 000 Windplanner fundraisers* $1097 Individual Contributions* $457 Anonymous Matching Donor up to $200, 000 *Some or all of these funds are being matched Total to Date: $211, 000
Projected Savings Average Wind Speed (m/s) k. Wh/yr (Northern Power Estimates - lower than UMass) 20 years of energy production (k. Wh) 4. 2 4. 5 5. 0 77, 000 99, 000 125, 000 1, 540, 000 1, 980, 000 2, 500, 000 Current Utility rate 0. 145 (per k. Wh) Energy savings per year (at current rate) $11, 165 20 -year utility rate $18, 125 0. 229 (projected average from Northwind) Energy savings per year $14, 355 (at projected avg. rate) $17, 633 $22, 671 $28, 625 Energy savings over 20 yrs. $352, 660 $453, 420 $572, 500 (using projected avg. rate)
Operation & Maintenance Estimate of $3500/ yr after warranty Possible Revenue Options to cover O & M *Sell Renewable Energy Credits (REC) $. 03/k. W 105, 000 k. W would generate $3150/yr *Fundraise to establish a reserve *Pay from savings *Other?
Siting the Northwind 100
The Northwind 100 • Direct Magnetic Drive • Warranty • Reputation • Big jump to go smaller • Location - quiet and cuts in at low wind speeds. 2 years “Best of Breed” for this size turbine. Design life (20 yrs) based on performance in the Arctic and Carribean. - there are no viable turbines in the 11 - 99 k. W class. manufactured in VT, service and initial carbon impact minimized
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