Hello, because in simulations the value of the "grid feed-in" is lower than what I indicate in "PV energy during observation period", since they are annual value.

Ex:
grid feed-in: 1670kwh.
PV energy during observation period in first year: 1645kwh.

Also, where can I find the theoretical (lossless) annual energy value (kwh)?

Thanks!

Hi UserPV,

could you provide an example project file so that we can take a look at it?

Thanks a lot, kind regards,

Martin

On 8/16/2019 at 5:42 AM, developer_mh said:

Hi UserPV,

could you provide an example project file so that we can take a look at it?

Thanks a lot, kind regards,

Martin

You can use as an example an example of PVSOL, such as plant P90 in germany. The Grid feed-in is 20,062,175 kWh/year, while in "PV energy during observation period" is 18,926,713 kWh / year for the first year.  I did not understand why the difference for more energy injected into the power grid.

Hi UserPV,

in the case of the example project "Solar Park Neuhardenberg incl P90", we have module degradation as well as P50/P90 analysis. See these topics for more information:

https://help.valentin-software.com/pvsol/2019/pages/financial-analysis/bankability-p50p90/

https://help.valentin-software.com/pvsol/2019/pages/pv-modules/module-degradation/

 

These two factors effect the amount of energy that is fed into the grid in the first year. If you set the P50/P90 bankability to 50 and the module degradation to 100% (no degradation), then hese two numbers are equal:

You can play around with the factors to see how they influence the results.

Kind regards and good luck,

Martin

I have a similar case in which the annual generation in the results, does not match with the annual generation of year 1. 

I have set P50 in bankability, for a 25-year observation period, and the following module degradation profile:

Year 1: 99%

Year 31: 87%

The result for year 1 within the observation period is around 0.4% lower than the estimated annual generation.

PV Generator Energy: 23,848 kWh/y

Energy Year 1: 23.724.5 kWh

Which generation is the correct one?

Is 23,848 kWh a generation for year 0?

Why do I have a result for 26 years when the observation period is 25 years?

Thank you

 

 

Dear Felix Galan,

Thank you for your inquiry.

Please send us your project file (*.pvprj) to hotline@valentin-software.com so that we can take a closer look at it.