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View Diary: Solar Power: Making the right choice, the easy choice ... (260 comments)

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  •  But ... (4+ / 0-)

    For example, if/when I go solar PV, I will remain connected to grid, but will almost certainly have some form of battery backup. (Sigh, Grid Point ...)  That will enable continuity of power if/when grid fails (even if constraining power use) while, hopefully, helping make house carbon neutral over the year even if I might draw more electricity at times than the system would produce.

    Thus, off-grid, to me, make most sense when there is a quite high-cost to connect to grid but ability to continue to function when grid has failures is a benefit that has real value.

    •  Battery back up is frequently... (0+ / 0-)

      ...a bad idea. First off, battery technology is weak. They are filled with lead and acid thus toxic. They are very expensive, last short periods of time (7 years?). Really large 48 volt banks are dangerous. Batteries gas.

      GT with battery backup works better with low maintenance batteries which are pricier. Deep cycle lead acid need maintenance and should be used with some frequency to maintain a charge.

      I could go on. I can only see using battery backup if you have to have power for say medical reasons, or your utility is awful and goes down all the time. There's likely other reasons I am not thinking of but they are extrememly expensive and NOT green friendly.

      -7.5 -7.28, What's a guy gotta do to get impeached around here?

      by Blueslide on Sun Dec 14, 2008 at 10:54:14 AM PST

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