Commercial

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saman1368
Commercial

Hi
I am utilizing SAM to develop PV load shape for different climate zones, I already developed the residential model and now trying to model commercial and industrial, there is no specific mode just want to know what are the differences between industrial, commercial and residential PV systems. As far as i know one of the main difference is the number of cells in the panel, is there any specific thing i have to count so can say this mode is industrial or commercial?

Regards
Amirsaman

Paul Gilman

Dear Amirsaman,

Thank you for the message.

When you create a project in SAM, you choose a performance model and a financial model. For example, to model a residential project like a roof-top system on a house, you could choose the Detailed Photovoltaic model and the Residential Financial model. To model a ground-mounted PV system on a farm or a roof-top system on a factory, you could choose the Detailed Photovoltaic model and the Commercial Financial model.

The residential and commercial projects use the same performance model, but different financial models. In general, PV systems for residential projects tend to be smaller than commercial ones, and those tend to be smaller than utility-scale (or industrial) projects. However, SAM does not prevent you from modeling a large PV system with the Residential financial model, or a small system with the Commercial model or one of the PPA financial models for utility-scale projects. It is up to you to design a system that is appropriate for your analysis.

The different financial models allow for different debt and other financial features. For example, the residential model has options for a standard or mortgage loan. The commercial model has options for depreciation that is not available in the residential model. Both the residential and commercial models assume that the PV system is used to reduce the building or facility electricity bill. The PPA models, on the other hand, are for power generation projects that earn revenue by selling electricity at a price determined by a power purchase agreement (PPA). Those models have more sophisticated financial features appropriate for a power generation project like reserve accounts, internal rate of return requirements, sculpted debt, etc.

Best regards,
Paul.

saman1368

Thanks for the respond dear Paul
But in SAM we are limited to 8 modules if we gonna use 3D shading.Am i right?
Like right now I want to design 50KWdc system if I use 300 module how can I do 3D shading?

Paul Gilman

The 3D shade calculator is limited to 8 strings of modules per subarray. There is no limit to the number of modules per string. You can include up to 4 subarrays in the system.

Best regards,
Paul.

saman1368

Thanks a lot for your great support and response
due to voltage limitation, i can't increase the number of module per string that much.
do you have any example in your database that I can understand the concept of large system design better? I couldn't find anything online
And if not is there any other suggestion for shading other than 3D?

Regards
saman

Paul Gilman

Can you describe in more detail the system you are trying to design? Can you design the system in SAM without 3D shading and send it to me? Perhaps from there I can better help you identify any limitations of the 3D shade calculator.

Best regards,
Paul.

saman1368

I've added a model, I am open to change the module and inverter or any other configuration. Being honest I'm so new to SAM and trying to just forecast a solar load shape for industrial, commercial and residential sectors. Then later I will run regression and model it in R or excel.
for commercial and residential I modeled two model one rooftop on the roof with pitch and 2KW and for the commercial 30KW system both ground mounted and rooftop mounted but for industrial such, as solar farms, I have absolutely no idea.

saman1368

Dear Paul
Did you get my model , it's attached to original post

Paul Gilman

In the file you attached to your original post, you used the PPA Single Owner financial model, which does not require an electric load. It is also for a 20 MW system. Your assumptions and the results look reasonable.

Best regards,
Paul.

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