Sun Hours per city worldwide
quique
Solar Expert Posts: 259 ✭✭
Id like to see the historical peak sun hours per city but I can only find data for US and Canadian cities. How could I find it for other cities in other countries such as cities in Honduras, Central America?
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Re: Sun Hours per city worldwideId like to see the historical peak sun hours per city but I can only find data for US and Canadian cities. How could I find it for other cities in other countries such as cities in Honduras, Central America?
Good question! I have been trying to get reliable information for Nicaragua. It seems like the vendors here use southern states in the U.S. (Florida, Texas, Arizona) for peak hour estimates. I am at 12.8 degrees north of the equator. It is hard to believe that peak hours here are the same as, for example, Miami, which is at 25.4 degrees north. -
Re: Sun Hours per city worldwideId like to see the historical peak sun hours per city but I can only find data for US and Canadian cities. How could I find it for other cities in other countries such as cities in Honduras, Central America?
You can get related information at http://neo.sci.gsfc.nasa.gov/view.php?datasetId=CERES_INSOL_M. But I believe that this information includes diffuse as well as direct sunlight, which is not the ideal number for use with crystaline panels. You also have to divide the watt-hours per square meter per day by 1000 watts per m2 to get sun hours per day.SMA SB 3000, old BP panels. -
Re: Sun Hours per city worldwide
This one has a lot of different cities from around the world:
http://solarelectricityhandbook.com/solar-irradiance.html
And, the numbers seem pretty close to how we use PV-Watts' numbers (simple hours of sun by month and panel tilt).
One thing that you need to check for--It appeared the one time I used it south of the equator--I had to point it "south" to get the number right--There is no "North" setting--Even for south of the equator locations.
-BillNear San Francisco California: 3.5kWatt Grid Tied Solar power system+small backup genset
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