der-vet

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Existing natural gas generator?

lshaver
Tue, 28 Dec 2021 23:55:03 GMT

I'm exploring using DER-VET to perform analysis of feasibility for a microgrid at a site with some existing assets, including PV and a natural gas generator. Clicking through the interface, I'm not seeing how to indicate that the site already has these assets? I'm also confused about how to input natural gas as a fuel for the ICE generator.

Andrew Etringer, EPRI
Thu, 03 Feb 2022 17:39:39 GMT

Thank you for this message! Yes, you may still include PV & DG as part of the existing DER setup. Just ensure the CAPEX cost is zero, since its already paid for and include other costs like O&M. On your second point, the cost of fuel for an ICE generator is controlled in the GUI by 2 parameters: fuel cost (in $/gallon) and Efficiency (gallons/kWh). To have the GUI consider natural gas as a fuel, you must adjust these 2 parameters accordingly (even though the units may be improper). Note that in the next release of the GUI (coming soon), DER-VET will have a newly designed project-wide fuel cost with units in MMBtu instead of gallons.