Calculating Scope 1 Emissions
How to calculate Scope 1
In this section you will see each of the four categories listed as Scope 1 under the GHG Protocol:
- Mobile Combustion
- Stationary Combustion
- Fugitive Emissions
- Process Emissions
You can learn about each of these categories in the Introduction to Carbon Accounting Course in Sumday Academy
Calculating Scope 1 Emissions
- Go to Assessments in the left hand menu.
- Go to Accounting
- Go to Scope 1
- Click into each category that’s relevant for your business. If you’re just using fuel for cars, it will just be mobile consumption.
- You’ll see a table on screen. This is what we call an Activity Data Worksheet.
- Click add item and (you can start with 1 or add 20 if you have a lot of vehicles for example) or use the Import button to download a bulk import template.
- Enter the asset name, select the fuel type, location and enter the consumption data
- Once you have entered your data, click close.
- You can also Export the worksheet and use the consumption data for trend analysis.
Watch this short clip to step through the process
What data do I need to calculate?
Here’s a table with the information you need for each category. For most businesses you need fuel and gas usage. You can put this data into Sumday and to calculate your Scope 1 emissions.
If you don’t own any vehicles, fridges, gas equipment or chemical processing equipment - there’s a good chance you don’t have any scope 1 emissions.
You can learn more in the Introduction to Carbon Accounting Course in Sumday Academy
Category | Data | Data Sources |
Mobile Combustion | A list of transport assets that consume fuel e.g. cars, buses, trains, ships
The amount of fuel used in the period | Fuel purchase receipts / Fuel cards / Mileage Records
Fleet Records |
Stationary Combustion | A list of non-moving assets that consume fuel e.g. LPG Cookers in commercial kitchens, furnaces, boilers
The amount of fuel used in the period | Fuel purchase receipts / Fuel cards
Fuel Management Records |
Fugitive Emissions | A list of assets that uses refrigerants e.g. fridges, air conditioners
The type of refrigerant or fire suppressant used and total refrigerant charge for the period | Asset models
Service records
Equipment user manual |
Process or Chemical Emissions | This one is very industry specific, some examples are: Amount of CO2 from the fermentation process, CO2 from the calcination process for cement production | Tracking systems |
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Last updated on September 4, 2024