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Re: [Shop-talk] 9,500 kWh of production in first year

To: "old dirtbeard" <dirtbeard@pacbell.net>
Subject: Re: [Shop-talk] 9,500 kWh of production in first year
From: "Paul Parkanzky" <parkanzky@gmail.com>
Date: Mon, 10 Mar 2008 22:08:27 -0400
It's very cool!  But between our dreary winters and lower energy costs
I don't think that we can begin to justify it.  Maybe in a few years
when we build our dream home.

-Paul in Grand Rapids, MI

On 3/10/08, old dirtbeard <dirtbeard@pacbell.net> wrote:
> Hi all,
>
>  It was one year ago today that we installed a 6 kWh, residential PV system
>  (30 Kyocera 200W panels and a SMA 6000U inverter, located in the Los Angeles
>  area).
>
>  After 365 days, it has generated 9,559 kWh on 4,396 hours, averaging about
>  26.2 kWh/day. We are on 12-month, net metering, and I won't get the final
>  bill for a while, but we will run a small surplus this year (generated more
>  than we consumed).
>
>  The year before we used more than a million watt hours of power, so in
>  addition to generating the power, we reduced our consumption a little. I
>  switched to CF lighting in most locations without dimmers, reduced the
>  wattage of many of the incandescent lights, put timers and motion sensor
>  switches, etc.
>
>  I have posted this before, but here are photos of the array and the
>  inverter:
>
>  http://www-rcf.usc.edu/~shook/images/Picture%20002.jpg
>  http://www-rcf.usc.edu/~shook/images/Picture%20008.jpg
>  http://www-rcf.usc.edu/~shook/images/Picture%20009.jpg
>  http://www-rcf.usc.edu/~shook/images/Picture%20010.jpg
>  http://www-rcf.usc.edu/~shook/images/Picture%20011.jpg
>  http://www-rcf.usc.edu/~shook/images/Picture%20012.jpg
>
>  I  am very glad we did it.
>
>  With no increase in utility rates, it should pay for itself in less than
>  seven years (we are on Edison and many months we were paying the 200% over
>  baseline rates which can quadruple the cost per watt). If you are operating
>  at baseline rates, it probably would take you longer to achieve a 100% ROI.
>
>  I have to confess, I find myself standing in front of the inverter on sunny
>  days "just watching" the power. The peak generation I have observed was
>  6,015 watts at 387 VDC -- it will spin that utility meter backwards like a
>  son-of-gun.
>
>  Best,
>
>  doug
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