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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