As said above, or perhaps you meant series?
Then that would depend on your controller, and is the 24V the Voc or the Mp rating as that again will affect the answer!
I have connected 10x205watt solar panel in parallel they are 12volt each the charger control is 12v also.the system is working ok but the question was how many solar panels can be connected in parallel.
thanks herbie
Herbie:Main reason every one is asking these questions is to help get you to the right answer.
You have stated now that you have 10 205 watt Panels in Parallel, that is 2050 watts... 2050 watts at 12Vdc is between 90 & 170Amps which in a pretty tidy amount.
You will need a controller that can handle to this amount. So if you're buying a solar controller for this look for one that has growth potential; so ONE that can handle say 200Amps at 12Vdc sound good.
AS to the original question as to how many? This still remains to be the answer of how many your 12VDC controller in AMPS it can handle.
OF course then there's the line lose for having panels so far away from the controller and such.
Do just a little bit more reading on here or grab a book ( even Google books reading online) about installing Solar Panels, this will help with the long term answer.
PS I fixed some of your spelling a grammar to make it a little bit more readable. Hope you don't mind too much.
PPSS>>> That's is a nice set of panels you have, would be very nice to see a picture of them
Cheers;
Bruce S