Storage addition to existing system  


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Hello to everyone,

I am currently using HOMER to evaluate whether it makes sense to add storage to some houses. My system is already connected to the grid and some PV panels are already installed on the houses that I am studying.

The problem is that I am not sure how I should introduce the layout of my system in a way that let HOMER understand that grid and PV panels are already there and the only additional cost would be the installation of the batteries. Any suggestion ? 

 

 
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Hello mattia, hope you are doing well.

Basically what you will want to do then is change the capital cost under PV to $0, this will simulate that the PV costs nothing at the start of the project. You could then alter the lifetime of the PV modules if you wanted to reflect the depleted lifespan of the panels but that should have you covered.

- AF

 
  
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