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how to build your home power system?

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Posted by LowImpact on March 4, 2004, 11:38 am
I have a small cabin in Maine which I would love to power with a
windgenerator system. I think I would need 18-24 1100 amp hour batts and a
3-4000 watt wind turbine. It must run in 10mph wind and be very flexible as
far as mounting rigs. Also I would like everything to have at least a 5 year

Posted by Ron Rosenfeld on March 3, 2004, 9:20 pm

Where in Maine?

Do you want DIY or a professionally installed system?

-- ron  (off the grid in Downeast Maine)

Posted by LowImpact on March 4, 2004, 1:36 pm
 20 mins north west of Brunswick. I have a pro to wire it up just need to
hunt componits.

Posted by Ron Rosenfeld on March 4, 2004, 2:04 am

Hmmm, your specs are rather loosely stated.  It may be that you have over
or underestimated your power consumption and/or wind resource.

NW of Brunswick puts you in a Class 2 area for wind.  And your wind
resource will be significantly greater in the winter than in the summer.

When you say 3,000-4,000 watts, that usually means at rated wind speed,
which may be 25-30 mph.

Most wind turbines will "run" at 10 mph, but there's not a whole lot of
energy in wind blowing that slowly.  For example, my Bergey XL-R, which has
a peak output of about 8kW at 30 mph, will only be putting out 500 watts at
10 mph.

Wiring is one thing.  Design and tower erection are something entirely
different.  The crane operator was quite impressed with the fellow that
assembled and directed the erection of my wind turbine, and contrasted it
with a number of other jobs he had been on.

Bergey's http://www.bergey.com/  wind turbines have five year warrantees,
but don't come in the size you specified.

Proven and Southwest Windpower produce turbines in the 2500 watt range, but
I believe only have two year warrantees.

So far as "mounting rigs", I don't know what you mean by "flexible".  I
have my Bergey on a guyed lattice tower.  Free-standing and tilt-up towers
have also been designed to carry the load.

Surrette http://www.surrette.ca/  makes batteries in your size that have a
ten year warrantee (three years full replacement, then pro-rated).

I will be glad to try to answer any more of your questions.  

Bill Behrens at The Green Store in Belfast (207-338-4045x102)
bill@greenstore.com is a professional very knowledgeable about design and
installation of both wind and solar electric systems.  As a matter of fact,
I will be adding PV to my wind system -- probably next month.  And Bill
will be doing the installation. (The PV panels are in my garage).

-- ron  (off the grid in Downeast Maine)

Posted by Steve Spence on March 4, 2004, 2:23 am
 Impossible to tell what your needs are without knowing what your current or
planned consumption is.

Steve Spence
Renewable energy and sustainable living
Donate $0 or more to Green Trust, and receive
a copy of Joshua Tickell's "From the Fryer to
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