JNSMAR043

Hi,
 
I am designing a solar array and need solar insolation data that is accurate and hopefully been used for similar purposes by members of this forum for correctly sizing their arrays in south africa.
 
I have been using a website called gaisma which has most major towns in south africa but I am not sure of its accuracy, what sources have you guys used for sizing your solar systems? The above website says that cape town has a June average of 2.5 Kwh/m^2/day and a peak in the summer months at 7.96 Kwh/m^2/day.
 
Regards and thanks,
JNSMAR043

https://eosweb.larc.nasa.gov/cgi-bin/sse/[email protected]
 has good solar and some wind data, this data is intended for design of solar sytems and has extensive amounts of information

that system was at my old place, i had connected them all in series to make 24v and then in parallel. I would unfortunately recommend that you consider using either 6v cells or even better 2v cells for that size bank. I have to do this shortly as my bank requirement is 952ah based on 16000w usage per day. so i would be using the Willard 2v cells x 24 in series giving me the 48v x 952ah. That should give me a max of three days autonomy.
Those Deltec's are going to give you 3 - 5 years as i don't think their cyclic rate is the greatest.... Rather sell them now while there is a demand and they are virtually new and get thicker plate solar cells.