Battery Merchant - Energy Revenue Calculation

Hi,

I'm discovering and testing the SAM Battery Merchant module. I've tried to test a simple case for a stand-alone project with only revenue from Energy Market (hourly price data). Despite entering usual/default inputs (see images below), the results don't give any revenue. It seems like the battery never charge or discharge. 

Thus, could you please let me know if something seems wrong in my inputs or what could be the issue?

Thank you!

Inputs :

Hi Nicolas,

From what I can tell from your screenshots, you are using a constant power price with a constant cleared capacity requirement, and have the battery dispatch option set to "automated dispatch."

You should see the battery discharge for the first few hours of the year and then stay discharged. The automated dispatch option is designed to dispatch the battery to maximize revenue from power sales at prices that vary from time step to time step. In your case, the price is constant, so it simply discharges the battery to maximize sales, and does not charge it to avoid the cost of charging the battery.



Best regards,
Paul.

Hi Paul,

Thanks for your answer. However, as you can see in the picture below, I have input hourly energy price in the "Energy Market Revenue" section. That's why I don't understand why the model don't charge/discharge based on these data. 

Would I need to modify another input?



Thanks,

Nicolas.

Hi Nicolas,

These screenshots do not provide enough information for me to troubleshoot your analysis.

Please attach the .sam file you are using for this analysis if you would like me to help troubleshoot.

Best regards,
Paul.

Hi Paul,

Please see attached the .sam file corresponding to my analysis and my issue.

Thank you,

Nicolas.

 

Hi Nicolas,

Thank you for attaching your file.

As described in the Help topic for front-of-meter automated dispatch ( samrepo.nrelcloud.org/help/battery_dispatch_fom.htm ), the Merchant Plant financial model does not work well for standalone batteries because of the cleared capacity requirement.

I've attached a modified version of your file that uses your time series price data with the Single Owner financial model based on the technique described in the note in that Help topic so that the battery dispatches in response to the price data:



Best regards,
Paul.