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energy per day from a 5KW system? - Page 3

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Posted by Jean Marc on February 15, 2010, 3:48 pm

<Sun for PV purposes, i.e. if you multiply your system's DC capacity 5
<(KW) by
<5(hour) and by 360 (days) = 9000 KWh. of AC KWh of energy, over a
<Good Luck,

... NOT so sure:

Here (France), you get roughly 1100 kWh/ year for 1kWc, for 100% (optimal)

Look, for example:
http://www.elecosolaire.fr/index.php?option=com_content&task=view&id &Itemid2&limit=1&limitstart=1

You'll surely find the same for the US


Posted by spdx on June 20, 2010, 7:36 pm
stevey wrote:

My suggestion would be to go to the Enphase website:


Find a system in the list near your geographical location and also
similar to the size array you are planning. You will be able to see how
other arrays compare.

Here on Maui, various sites have said that we get close to 7.5 hours of
sun - just as you supposedly get.

However, you will find that as many folks have mentioned, 3-5 hours is
more realistic. It depends on the time of the year.

The orientation of your panels will also make a huge difference.

I have direct southern exposure and this time of year (June), the system
slowly starts generating about 20 watts at about 6:30am. It gradually
builds through the morning and begins to generate at full capacity
around 10am. This will last through perhaps 4pm.

The Enphase website mentioned above will allow you to actually see how
various installations produce throughout the day. You will also see the
effects of cloud cover as well as any issues someone may have because of
other types of shading.

Aloha from Maui

Posted by dold on June 21, 2010, 6:14 am
http://cdold.home.mchsi.com/Solar-generation.htm  $,897 avoided in 2009

In 2009, I had 4152 hours of run time, producing 6746 kWh on a 4500 Watt DC
3800 Watt AC system.  PVWatts nearby says 5.39 kWh/m2/day for my panel
location, tilt and azimuth.  South/38.8 would be 5.5 kWh/m2/day.

Predicted solar energy available, based on real observation points around
the US and the world.

Clarence A Dold - Hidden Valley Lake, CA, USA  GPS: 38.8,-122.5

Posted by Jean-Marc on June 21, 2010, 8:55 am



Posted by dold on June 21, 2010, 9:08 pm

I usually try to hit URLs to make sure they are still good before I post
them, but I didn't expect a government site to move ;-(

Clarence A Dold - Hidden Valley Lake, CA, USA  GPS: 38.8,-122.5

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