permaculture

[christopher nesbitt <christopher.nesbitt@mmrfbz.org>]

You need an inverter to make the DC electricity from your panels AC.
On May 14, 2009, at 9:18 AM, John Fritz wrote:

> I don't understand why one would need an inverter in a grid tie  
> battery-less system?   If I am getting my juice from the grid, it is  
> already AC.  Why would I need to invert it to anything else.
>
> John Fritz, NW Arkansas.
>
> Message: 3
> Date: Tue, 12 May 2009 11:51:07 -0600
> From: Stephen Sherman <spsherm@msn.com>
> Subject: Re: [permaculture] batteries vs grid-tie
> To: permaculture <permaculture@lists.ibiblio.org>
> Message-ID: <BLU0-SMTP790E11E7085CCC5AA42125A7600@phx.gbl>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> I can't seem to find the original post, but here are a few thoughts...
>
> Batteries add to the cost of a system, but they provide power when the
> grid is down. Not only from the power they store, but also because  
> many
> (perhaps most) grid connect/battery-less inverters won't invert if the
> grid is down, even if your PVs/wind are making electricity. So it  
> really
> depends on what you want out of your system. Do you need electricity
> when the grid is down? Do you need your AE system to act as a UPS for
> some critical equipment? If so, you probably will need some  
> batteries on
> the system and an inverter designed to use them.
>
>
>
>
>
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_____________________________
Christopher Nesbitt

Maya Mountain Research Farm
San Pedro Columbia, Toledo
PO 153 Punta Gorda Town, Toledo
BELIZE,
Central America

www.mmrfbz.org