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Solar Charging in Milwaukee

Discussion in 'North America' started by scott2613, Jan 14, 2014.

  1. scott2613

    scott2613 Member

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    Location:
    Wisconsin
    The two outdoor charging stations in the front lot at Marshall Auto Body, an HPWC and a 75A Clipper Creek J1772 are now solar powered.
    Here's a photo of the 71kW solar array that powers them and the body shop. They are free to all Tesla owners and the shops customers.
     

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  2. 772

    772 Member

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    Wow, that is massive! Great work
     
  3. Tesla 940

    Tesla 940 Member

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    Location:
    Long Beach, CA & Taos, NM
    Do you know what the expected annual electric production is suppose to be?
     
  4. CalDreamin

    CalDreamin Member

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    Wow, very nice!
     
  5. Cottonwood

    Cottonwood Roadster#433, Model S#S37

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    Very gross rule of thumb in the 48 states is 1.5 kW-hr/yr for each DC Watt.

    About 100,000 kW-hr/yr, 100 MW-hr/yr, 0.1 GW-hr/yr
     
  6. swaltner

    swaltner Member

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    Location:
    Kansas, USA
    Sounds about right on the 100 MWh/year production. I plugged the following inputs into PVWatts 1:

    Location: Milwaukee
    DC Rating: 71 kW
    DC Derate Factor: .9 (guestimate - this is what I use on my 5 kW home system to get realistic estimates)
    Fixed Tilt: 10 degrees (guess based on picture)
    Array Azimuth: 180 (guess - direct South)

    Resulting production estimate: 94,971 kWh/year

    I searched the public systems listed on Enphase Energy - Enlighten | Sign in to Enlighten. If they're using the Enphase micro inverters and web gateway, the system isn't currently shared. Would be cool to see live data from a large system like that...
     
  7. scott2613

    scott2613 Member

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    Messages:
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    Location:
    Wisconsin
    Try eGauge Home Page Go to devices and enter 7573 in the text box. It's been snowing and the panels are under two inches of the white stuff right now.
    We will have to wait for better weather to see how well things work. Right now we are working on reducing our peak demand and overall electricity use with the goal of getting all our power from renewables.
     

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