GHG emission factor for 100% renewable electricity

Vinh Huynh

Energy & sustainability engineer

Ramboll Finland

LEEDuser Premium Member

0 thumbs up

May 17, 2022

Hi,

We have a project that is able to demonstrate that 100% of its electricity usage will come from renewable sources. Does it mean that we can use 0 g/kWh when we calculate GHG emission saving?

In the credit language it only says to use the latest national grid mix coefficients from the International Energy Agency or ISO 52000-1:2017: Greenhouse gas emission factors.

Thank you in advanced!

Post a reply

Marcus Sheffer

LEED Fellow

7group / Energy Opportunities

LEEDuser Expert

4454 thumbs up

Mon, 05/23/2022 - 20:11

From the credit language - "On-site renewable energy may be subtracted from proposed greenhouse gas emissions prior to calculating proposed building performance per ASHRAE Standard 90.1-2016 Section G 2.4.1. Tier 2 off-site renewable energy as defined in EA credit Renewable Energy may be subtracted from proposed greenhouse gas emissions prior to calculating proposed building performance." Follow this link for more guidance on applying renewable energy system output to LEED v4.1 projects - https://www.usgbc.org/leed/v41#bdc - download theLEED v4.1 BD+C guide and see page 137.