GHG Savings for single energy source project

Yes that is correct

Hi Omar,

Possibly yes, but... you didn't mention if you are including renewables and if they are on-site vs off-site in your 40% energy savings. So that's one aspect which is noted in the calcs and how those can be claimed for GHG savings. See Option 1 Table 1 & 2 Notes for details. 

The other "but" is an annualized emissions factor for your Scope 2 electricity usage will give you this kind of over simplification where 40% kWh reduction is 40% CO2e saving. GBCI doesn't require you do hourly emissions factor analyses (either average-hourly or marginal-hourly) in v4 or v4.1 but this is in the v4.1 Ref Guide under Electrictiy Hourly Emissions Factors.

Cheers,

Jamy

Hi Jamy, we were referring for emission factors in India from Central Power Authority rather than from Climate transparency report. The climate transparency report produces the factor in gCO2/KWh, however we dont know whether the GHG savings due to renewable energy is taken into the emission factor. In the report from Power Authority, the average emission factor is produced taking renewables into consideration.

Do you have any thumbrule of adjusting the emission factor from climate transparency report for renewables? As I am not quite sure whether the emission factor from Central Power Authority will be accepted in LEED. Thanks in advance.

I'm not entirely following the question. But my prior discussion above with Omar was just to note that if your LEED project has on-site or off-site renewables, then the savings in kWhs to GHG might be impacted by the calculations' weightings. 
If you have a reputable source for electricity emissions such as one IGBC allows, then it should reflect the entire electricity generation fuel mix such as hydro, coal, natural gas, nuclear, wind, geothermal and solar. This should be the most recently available data so it includes grid decarbonization rather than a figure which is both historic and dated. In the US most people would be turning to EPA's eGRID 2023 data if they are looking for an annualized recent grid emissions factor. When we want to look forward to forecasted emissions, we would use NREL Cambium data, which is hourly, annual, average and marginal. But that's likely more than you need to focus on at the moment. You need to find a reputable source of data for your region.

I believe Central Electricity Authority of India provides a fair grid emission factor considering the renewables. Also, I am referring to last year annual average emission factor, so that should work good. The point here is we still get the equivalent savings % for energy as well as GHG emission since we are using the same average emission factor for both baseline & proposed. Hope that is in line with LEED requirements.