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View Diary: Let's put 'solar panels on every home' say Robert Kennedy Jr. and David Crane (190 comments)

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  •  Unfortunately, that's not quite true. (1+ / 0-)
    Recommended by:
    radarlady

    I look at those same open spaces under utility lines and drool. But modules are very susceptible to the least bit of shading - like the shadows from the wires as the sun moves across the sky. Could really stymy production, or even shut it down.

    So far. :-)

    "I can't do it by myself. No president can. Remember: Change doesn't happen from the top. It happens because of you." B Obama, 2008

    by nzanne on Sun Dec 16, 2012 at 07:03:22 AM PST

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    •  Ever here of parallel circuits? (4+ / 0-)
    •  Overblown (3+ / 0-)

      Yep, they don't like shade, and sure, part of the day will have less production than others. But, in many places they could be placed such that the lines never shadow them (if the lines run East-West), and in others, placed so shadows are minimized. In winter, the lower sun angle would further reduce any shading.  

      In addition, shading issues are a much bigger problem when you have your array wired in series feeding a single AC inverter. In this case, the production of the lowest-producing panel is the max you can get out of any panel. With micro-inverters, the panels are wired in parallel and that is eliminated. However, a direct grid feed is done via DC, so the wiring can be done in parallel without any special equipment.

      •  Right. (0+ / 0-)

        We are just finishing installation of 12 panels on our house, and we are using micro-inverters.

        Mark E. Miller // Kalamazoo Township Trustee // MI 6th District Democratic Chair

        by memiller on Sun Dec 16, 2012 at 08:56:48 PM PST

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      •  Micro inverters for solar farms (0+ / 0-)

        are cost prohibitive, obviously.

        And summer - when shading issues from transmission lines are greatest - would be the time of max need / production / return.

        "I can't do it by myself. No president can. Remember: Change doesn't happen from the top. It happens because of you." B Obama, 2008

        by nzanne on Mon Dec 17, 2012 at 04:04:06 AM PST

        [ Parent ]

    •  shade (3+ / 0-)
      Recommended by:
      TiaRachel, jjellin, TheDuckManCometh

      That's just a cost to add into the final calculation to decide whether one location is better than the other. Sure, if it produces less energy it will generate less income at the end of the day, but if the land costs less to lease than another location, it will have fewer expenses.  So it may be a wash.

      It's time for cheaper solar power! Zenman Energy

      by ZenManProject on Sun Dec 16, 2012 at 11:30:17 AM PST

      [ Parent ]

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