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aapn77 last won the day on April 16

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  1. As a double check I run my own Excel calculation and when comparing that to the PV Sol calculation I find a difference which I hope you can explain. Please look at the attached file; Financial Analysis; First year saving. SEK 5.233,68 Then look at the cash flow Table year 1; Electricity saving. SEK 5.131,06 Should´t these two figures be the same? I have 0 in all inflation rates to eliminate that as an explanation. Next Total Payment from Utility in First year is SEK 6.037,03 I would expect that to be equivalent to Feed-in / Export Tariff in the Cashflow table or ? Regards,
  2. Dear sir, Can we simulate Total cross tied or Bridge link scheme on PVSOL?
  3. Hello, I had a problem today with the specific annual yield calculation. I planned twice a PV plant with different load profile, but the devices (Inverter, Modules, Batteries) remained unchanged. Surprisingly the specific annual yield changed. Do you have any explanation why the specific annual yield is function of - or at least is influenced by - consumption? Thanks in advance Kamal
  4. Hi to everyone, how can be possible simulate an half cut cell modules like trina TSM PE14H ? Thanks
  5. Hello everyone I'm looking for a good source of information for solar panel software. My dad's company has been relying on an external service to do the calculations and drawing of the solar designs, but he wants to do it himself because the external service asks loads of money and are sometimes 2 weeks late with their reports. We use the solmetric suneye device to measure shadow, this data can be imported to the solmetric software called PV designer. However, PV designer is not that great. There's no auto-filling the roof you drew if it's not a rectangle, there's no option for custom no-module zone (only rectangle or circle) and it hasn't been updated in half a year. Are there any decent and easy drawing programs specifically for solar panels? I wonder what you guys think? Is there any international forum for installers and solar panel enthusiasts? What do you guys use? I've seen pv*sol which is an expensive software package, any experience with this? Others use google sketchup and import radiation data from google earth to generate expected revenues. How reliable is the data? And is google sketchup any good for solar panels? I'm seems to be a bit to general purpose for solar. Are there any other shadow measuring devices like solmetric which are reliable and have a modern software suite? There is so much software for solar panels but it's hard to say which is crap or hasn't been updated or finding any reviews of them. A drawing/calculation/... program in one would also be nice, currently we use an excel sheet for the calculations. Really, any advice would be much appreciated, or a pointer to some better resources than reddit. I'm located in western europe if that would help.
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