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Financial results in self-consumption projects


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Hello dear developers,

I'm working on a self-consumption project for which I'd like to calculate net present value, IRR, payback and cashflow and I noticed that PV*SOL seems to take the total produced energy for its financial calculations, instead of what is actually self-consumed by the customer (the rest of the energy is wasted, as we need to use a zero injection device to guarantee that none of the energy is fed into the grid).

image.png.47175398eb28c5bfbee24299ac02b437.png

image.png.0d243a6cbf934316b8332928fccc3321.png

This is not right, as the benefit for the customer is the lower electricity bill due to the PV energy produced and consumed for his process, there is no feed-in tariff or any other compensation for the surplus energy. How can I indicate that this other value (223.029 kWh and not 274.693 kWh) needs to be used for the financial calculations?

Thanks and regards,

Ricardo

 

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Hi Ricardo,

could you provide a project file, please? That would make it easier for us to see what happens. I quickly set up a similar project (PV and consumers, with zero feed in), and it looks like this (disclaimer: I did not enter reasonable economy values):

image.png

 

And then in the economy section:

image.png

Kind regards,

Martin

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Hi Martin,

I'm not sure I follow what you say or how it relates to my question but I have sent you my simulation results (pdf) via DM, as the PV*SOL file itself is too big. Let me know if it reaches you, if you need more information I'll be happy to e-mail it to you.

Thanks and regards,

Ricardo

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