Dear all,
Hi.
For LEED NC certification, I’m modeling a building with 03 floors and less than 14.000 m² conditioned floor area. The proposed cooling system is composed by absorption chillers with natural gas as fuel. The building has no heating system, only cooling. According to ASHRAE 90.1-2007 – app. G, I understand that the baseline system is system #6. My doubt is:

For cooling, Proposed model will use natural gas as fuel, and baseline will use electricity. Is that right? Because there’s a big difference between the natural gas and electricity tariffs, and I’m not sure if I can compare these costs, or if I should somehow calculate the cooling system from baseline with the natural gas tariff too.

Tks in advance
Thais