Negative net present value and discounted Payback period infinity !

  • Abdullah
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17 Nov 2020 09:37 #9008 by Abdullah
Hi everyone, 

I am doing this rooftop assembly PV for a nameplate capacity of 10 KW , but I always get these errors mentioned in the title, any idea why? 
I am all new to this SAM software so please any help is much appreciated. 
attached the file
Thank you

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  • Paul Gilman
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19 Nov 2020 18:40 - 19 Nov 2020 18:41 #9014 by Paul Gilman
Hi Abdullah,

For the Residential and Commercial financial model, a negative NPV indicates that the electricity bill savings are less than the project costs over the analysis period. To make the project economically viable you can try:

  • Decreasing the installation and/or operating costs.
  • Increasing the load on the Electricity Load page.
  • Increasing the energy rates on the Electricity Rates page.
  • Increasing the discount rate.

Best regards,
Paul.
Last edit: 19 Nov 2020 18:41 by Paul Gilman.

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  • Abdullah
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20 Nov 2020 20:15 #9017 by Abdullah
Hi Paul,

Thank you very much for your answer solved my problem ! , I am also wondering how to include back tracking with this system as I don't see any box to tick for that matter. 

Best Regards.  

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  • Abdullah
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20 Nov 2020 20:58 #9018 by Abdullah
Hi,

Please ignore the last response my bad I found the box. 

Thanks 

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