Ice Thermal Storage for utility and submeter in Trace 3d plus

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Dear all,

I'm using Trace 3D plus for LEED project.

Our building system has ice thermal storage The ice thermal storage has a another utility(for ice sto.) because local country encourage ice storage for Power Plant peak down.

However, I'm encountered submeter and utility issue.

Default electericity meter type is 'building electricity' which is assigned all of electricity end use. Therefore I'm add a new submeter and assigned related ice storage system end use for assign another utility(for ice sto.)

First issue is when I add a new submeter(for ice sto.) and assign another utility(for ice sto.) however the existing meter(building electricity) involved calculate new submeter.

Second issue is when I add a new submeter(general) and new submeter(ice sto.) - default meter(building electricity): empty however it was caused error because system can't assign new submeter.

It seems like meter property, but I can't modify property in software.

Is there any solution for midnight utilty? I'm just want to assign each meter to each utility(not summed).

Thanks for all of your support,