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Comments on: How much electricity a sq ft of solar panels produce on an average day, and how much the panel costs? http://www.xfsolarpanels.com/blog/solar-panel/how-much-electricity-a-sq-ft-of-solar-panels-produce-on-an-average-day-and-how-much-the-panel-costs 'Cause Not Paying For Energy Is Fun! Sat, 11 Feb 2012 14:10:23 +0000 http://wordpress.org/?v=2.7 hourly 1 By: New England Breeze Kristen http://www.xfsolarpanels.com/blog/solar-panel/how-much-electricity-a-sq-ft-of-solar-panels-produce-on-an-average-day-and-how-much-the-panel-costs/comment-page-1#comment-5253 New England Breeze Kristen Sat, 27 Feb 2010 05:13:59 +0000 http://www.xfsolarpanels.com/blog/solar-panel/how-much-electricity-a-sq-ft-of-solar-panels-produce-on-an-average-day-and-how-much-the-panel-costs#comment-5253 Good answers so far, and I'll add my two cents. To be more precise, I believe you are asking about energy production in Watt-hours (Wh) per day rather than power output in Watts. As stated in the previous response, the energy output will depend upon the geographic location of the solar panel and the time of year. In most areas in the US the same panel will produce twice as many Watt-hours in a summer day than a winter day. That being said, 1000 Watts of solar (1 kW) will produce about 1000 to 1200 kWh per year in New England. The 1 kW solar array will take up approximately 100 square feet. Looking at the annual averages for a particular location may be more beneficial to you than daily production. An excellent source to examine monthly and annual energy outputs is PV Watts from the National Renewable Energy Lab: http://rredc.nrel.gov/solar/codes_algs/PVWATTS/version1/ If you are really after Watt-hours (Wh) per day, take the Wattage of the solar panel and multiply it by the average sun-hours for the month in that location. Search for 'insolation' online. In terms of solar panel costs, indeed the prices have come down over the last several years. You would be looking for a UL listed solar module that has at least a 2 year warranty for workmanship and a 20-25 year power warranty. You will find that with most reputable brands of solar panels such as Sharp, Sanyo, Schuco, Evergreen, Kyocera, BP, Mitsubishi, etc. Costs of just solar panels are roughly $3.50-$5.00 per Watt for panels above 150 Watts. I hope this helps, Kristen http://newenglandbreeze.com/<br><b>References : </b><br>PV Watts -- http://rredc.nrel.gov/solar/codes_algs/PVWATTS/version1/ Good answers so far, and I’ll add my two cents. To be more precise, I believe you are asking about energy production in Watt-hours (Wh) per day rather than power output in Watts. As stated in the previous response, the energy output will depend upon the geographic location of the solar panel and the time of year. In most areas in the US the same panel will produce twice as many Watt-hours in a summer day than a winter day.

That being said, 1000 Watts of solar (1 kW) will produce about 1000 to 1200 kWh per year in New England. The 1 kW solar array will take up approximately 100 square feet. Looking at the annual averages for a particular location may be more beneficial to you than daily production. An excellent source to examine monthly and annual energy outputs is PV Watts from the National Renewable Energy Lab:
http://rredc.nrel.gov/solar/codes_algs/PVWATTS/version1/

If you are really after Watt-hours (Wh) per day, take the Wattage of the solar panel and multiply it by the average sun-hours for the month in that location. Search for ‘insolation’ online.

In terms of solar panel costs, indeed the prices have come down over the last several years. You would be looking for a UL listed solar module that has at least a 2 year warranty for workmanship and a 20-25 year power warranty. You will find that with most reputable brands of solar panels such as Sharp, Sanyo, Schuco, Evergreen, Kyocera, BP, Mitsubishi, etc. Costs of just solar panels are roughly $3.50-$5.00 per Watt for panels above 150 Watts.

I hope this helps,
Kristen
http://newenglandbreeze.com/
References :
PV Watts — http://rredc.nrel.gov/solar/codes_algs/PVWATTS/version1/

]]> By: roderick_young http://www.xfsolarpanels.com/blog/solar-panel/how-much-electricity-a-sq-ft-of-solar-panels-produce-on-an-average-day-and-how-much-the-panel-costs/comment-page-1#comment-5252 roderick_young Sat, 27 Feb 2010 04:45:59 +0000 http://www.xfsolarpanels.com/blog/solar-panel/how-much-electricity-a-sq-ft-of-solar-panels-produce-on-an-average-day-and-how-much-the-panel-costs#comment-5252 That's a very difficult question to answer precisely, because it depends on factors such as where you live, cloud cover, average length of day, which way the panels are tilted, temperature, etc. Our array in Northern California is about 220 square feet and produces on average, about 17 kWh a day. That's 0.08 kWh per square foot per day, crudely. A good panel today will produce a little bit more, maybe 20% more. Most people have either ample room on their roof, or their whole roof is poorly suited, so it's rare to talk in terms of square feet for a solar electric array. Usually, an array is sized based on the house's energy needs. The figure of merit for a solar array is dollars per watt. A $6 per watt net cost after rebates is considered good, anything less is even better.<br><b>References : </b><br> That’s a very difficult question to answer precisely, because it depends on factors such as where you live, cloud cover, average length of day, which way the panels are tilted, temperature, etc.

Our array in Northern California is about 220 square feet and produces on average, about 17 kWh a day. That’s 0.08 kWh per square foot per day, crudely. A good panel today will produce a little bit more, maybe 20% more. Most people have either ample room on their roof, or their whole roof is poorly suited, so it’s rare to talk in terms of square feet for a solar electric array. Usually, an array is sized based on the house’s energy needs.

The figure of merit for a solar array is dollars per watt. A $6 per watt net cost after rebates is considered good, anything less is even better.
References :

]]> By: Stephen M http://www.xfsolarpanels.com/blog/solar-panel/how-much-electricity-a-sq-ft-of-solar-panels-produce-on-an-average-day-and-how-much-the-panel-costs/comment-page-1#comment-5251 Stephen M Sat, 27 Feb 2010 04:24:59 +0000 http://www.xfsolarpanels.com/blog/solar-panel/how-much-electricity-a-sq-ft-of-solar-panels-produce-on-an-average-day-and-how-much-the-panel-costs#comment-5251 Thick film solar panels can produce roughly 9 to maybe 12 watts per square foot. The thin film ones, which are cheaper to buy, produce far less. http://www.backwoodshome.com/articles2/yago90.html I don't know what your over all plan is here as you have not said. However, if you are talking about producing power for your home, the over all panel costs are only a small part of the over all issues you have to work out. http://www.americanpv.com/pdf/res_on/prices.pdf I'm giving you this information from a local company because I got my system from them. Installed cost for everything typically works out to be around $6 per watt, which makes is a terrible deal... until you start researching what local incentives might exist in your area. A 4.7 killowatt system will cost you over $25,000. However, with federal, state and especially the local utility rebate of $3.00 per watt, your cost will be down in the $4,000 range. So the first thing for you to do is research what rebates are available in your area.<br><b>References : </b><br> Thick film solar panels can produce roughly 9 to maybe 12 watts per square foot. The thin film ones, which are cheaper to buy, produce far less.

http://www.backwoodshome.com/articles2/yago90.html

I don’t know what your over all plan is here as you have not said. However, if you are talking about producing power for your home, the over all panel costs are only a small part of the over all issues you have to work out.

http://www.americanpv.com/pdf/res_on/prices.pdf

I’m giving you this information from a local company because I got my system from them. Installed cost for everything typically works out to be around $6 per watt, which makes is a terrible deal… until you start researching what local incentives might exist in your area.

A 4.7 killowatt system will cost you over $25,000. However, with federal, state and especially the local utility rebate of $3.00 per watt, your cost will be down in the $4,000 range. So the first thing for you to do is research what rebates are available in your area.
References :

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