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Slide 1 Dave Strenski March 2012 Birth and Death of a Solar Electron He was always so negative Baby minus.

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Presentation on theme: "Slide 1 Dave Strenski March 2012 Birth and Death of a Solar Electron He was always so negative Baby minus."— Presentation transcript:

1 Slide 1 Dave Strenski March 2012 Birth and Death of a Solar Electron He was always so negative Baby minus

2 Slide 2 Renewable Energy and a Renewed Economy for Michigan February 29, 2008 by Senator Glenn S Anderson Consumers, businesses and manufacturers in Michigan currently pay $18 billion each year to import coal, oil and natural gas. Of that $18 billion we import 100% of the coal we use, 96% of the oil we consume for transportation fuels and 75% of our natural gas from other states. That money heads across the border each year to help workers and businesses in other states, and it does nothing to reduce our dependence on fossil fuels, lower greenhouse gas emissions, diversify our state's economy or create jobs here in Michigan. Could add $18 billon to Michigans economy every year! Slide 2

3 Slide 3

4 Slide 4 KWH Sunny Boy 325 KWH Forward Meter Reverse Meter Gen Meter sun store meters disconnect inverter photovoltaic panels breaker panel utility meters

5 Slide 5

6 Slide 6 Steeper for more uniform annual power Flatter for maximum annual power Tracking systems Seasonal fixed panels Fixed panels

7 Silicon [Si] Slide 7 + n 14 neutrons 14 protons shell 1 shell 2 shell 3 valence electrons

8 Silicon [Si] Slide 8 + n 14 neutrons 14 protons shell 1 shell 2 shell 3 valence electrons

9 Slide 9 wires on the top wires on the bottom silicon doped with boron (holes, few less electrons) silicon doped with phosphorus (few extra electrons) Building a Solar Cell

10 Slide holes migrate down photons electrons migrate up

11 Slide 11 Uni-solar Made in Michigan Amorphous Silicon Mono and Polycrystalline Silicon

12 Slide 12 KWH Sunny Boy 325 KWH Forward Meter Reverse Meter Gen Meter sun store meters disconnect inverter photovoltaic panels breaker panel utility meters

13 Slide 13 UL listed Clean power Shuts offs if grid is down Powered by solar Quite and Cool Displays power generated DC in AC out time voltage AC voltage DC time

14 Slide 14 Standard breaker 240 volt, 20 amp back fed

15 Slide 15 4:00 am OFF forwards

16 Slide 16 8:00 am direct current alternating current forwards

17 Slide 17 11:00 am direct current alternating current forwards

18 Slide 18 1:00 pm direct current alternating current backwards

19 Utility supplies power to the transmission lines Power is distributed to the neighborhood Solar panels start generating power Slide 19

20 Utility supplies power to the transmission lines Power is distributed to the neighborhood Solar panels start generating power One less shovelful of coal is needed at the utility power plant Slide 20

21 Slide 21 In to the store Out of the store Generated from panels data to laptop Slide 21

22 Slide 22

23 Slide 23 Solar Economics 2000 sq. ft. home 440 KWH /month (average) 16c per KWH (2011) 440/30 = 14.7 KWH (day), round up to 15 KWH per day on average

24 Slide Oak Street, Ypsilanti Avg KWH per month = 440 $50.93 / 367 = $0.139/kwh $43.09 / 269 = $0.160/kwh $37.60 / 218 = $0.173/kwh $48.18 / 308 = $0.156/kwh Avg = $0.157/kwh

25 Slide 25 Solar Economics 4 hour of sun per day, assumes panels are facing south tilted at latitude. Assume 80% system efficiency 15 KWH / 4 hr * 1.2 = 4.5 KW (added 20% for efficiency) 4500 watt would be about 18 solar panels at 250w per panel sq. ft. home 440 KWH /month (average) 16c per KWH (2011) 440/30 = 14.7 KWH (day), round up to 15 KWH per day on average

26 Slide 26

27 Slide 27 Solar installation cost = $3 to $7/watt installed 4500w * $3/w = $13, w * $7/w = $31,500 Minus 30% federal tax credit $13,500 * 0.7 = $9,450 $31,500 * 0.7 = $22,050 Cost of electricity for 440kwh/month Solar Economics yrs16c18c20c22c 5$4,224$4,752$5,280$5,808 10$8,448$9,504$10,560$11,616 15$12,672$14,256$15,840$17,424 20$16,896$19,008$21,120$23,232 25$21,120$23,760$26,400$29,040 4 hour of sun per day, assumes panels are facing south tilted at latitude. Assume 80% system efficiency 15 KWH / 4 hr * 1.2 = 4.5 KW (added 20% for efficiency) 4500 watt would be about 18 solar panels at 250w per panel sq. ft. home 440 KWH /month (average) 16c per KWH (2011) 440/30 = 14.7 KWH (day), round up to 15 KWH per day on average

28 Slide 28 Costs are coming down, and volumes are going up.

29 Slide 29 ¼ useful 3 / 4 wasted

30 Slide 30

31 Slide 31 Ypsilanti Solar Photovoltaic Case Studies

32 Slide 32 Shadow (bad) 190 watts 54.8 max volt 3.47 max amp 31 pounds 35.3 x 51.9 $1000 Ypsilanti Food Cooperative – River Street, Ypsilanti, Michigan 190 x 4 = 760 watts $6000 ($7.90/watt)

33 Slide 33 Ypsilanti Food Cooperative – River Street, Ypsilanti, Michigan 190 x 5 = 950 watts $1000 upgrade ($7.37/watt) No shadows

34 Slide 34 Ypsilanti Food Cooperative – River Street, Ypsilanti, Michigan 190 x 12 = 2280 watts $9,500 upgrade ($7.24/watt) unused inverter, -$500 ($7.00/watt)

35 Slide 35 Ypsilanti Food Cooperative – River Street, Ypsilanti, Michigan White roof added later. Should improve reflectivity.

36 Slide 36 City of Ypsilanti, City Hall – South Huron, Ypsilanti, Michigan 205 x 12 = 2460 watts $27,300 ($11.10/watt) Extra cost due to location, and engineering services

37 Slide 37 River Street Bakery – River, Ypsilanti, Michigan 200 x 30 = 6000 watts $44,000 ($7.33/watt)

38 Slide 38 Adams School – River, Ypsilanti, Michigan 240 x 10 = 2400 watts

39 Slide 39 Solar Ypsilanti: SolarYpsi.org Ypsilanti Food Cooperative: YpsiFoodCoop.org City of Ypsilanti: CityofYpsilanti.com Federal Tax Incentives: DTE Energy Solar Currents: Great Lakes Renewable Energy Association: Midwest Renewable Energy Association: HomePower magazine: Solar Today magazine: Solar Tour:


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