Difference between The Yield and Yield for EnEV

[Carlos33]

 

Hi,

Can anybody explain why I have two different yields on my report?

What is The Yield for EnEV?

 

 

Thank you in advance

 

Carl

[Jimmy]

I found this: https://help.valentin-software.com/pvsol/en/pages/results/energy-yield-for-enev/

To be honest, I have no idea what this means and unless I have to I'm not going to try to find out. 

[Carlos33]

Hahaha thanks Jimmy.

I found a few similar posts in German. It looks like it is only relevant to designs for Germany. They have their own regulations that rounds your panel inclinations up or down rather than what you have designed.

So the PVSol yield is much more accurate but it is needed for proof in Germany I have been told.

Thanks

 

[developer_mh]

Hi Carlos, hi Jimmy,

exactly, the EnEV results are relevant for Germany only. They should only appear for PV systems with location in Germany.

Kind regards,

Martin

[Nanta Ragavander]

So what is the difference in values, and are we to consider that in Germany we only get EnEV yield to the grid and does the economic calculation happen with the EnEV or the grid exort?

Thanks in Advance

 

[hotline_oh]

Dear Nanta Ragavander,

Thank you for your inquiry.

For EnEV, the yield of the PV system must be calculated according to DIN EN 15316-4-6 with irradiation values from DIN V 18599-10. This is a very simplified calculation method. The irradiation at the module level is taken into account, which is specified by DIN V 18599-10 for various regions. Only the angles 0°, 30°, 45°, 60° and 90° are available as tilt angles. The climate data set actually selected during planning, with its more realistic irradiation values, is irrelevant. The peak power of the PV system and a system power factor are also taken into account. The system power factor is also specified by DIN. The actual module and inverter parameters are irrelevant.

The ENEV calculation has nothing to do with the actual PV*SOL yield simulation. PV*SOL carries out a dynamic simulation process that is based on the actual module and inverter parameters, etc. The specific efficiencies of the modules and inverters, temperature dependencies etc. are taken into account in the simulation. In addition, the specific, selected climate data set for irradiation is used. The simulation contains not just a formula, but a complex model with many parameters. Accordingly, the results of the EnEV calculation may deviate to a greater or lesser extent from the actual simulation.