Scope 1 and Scope 2 are categories used to classify greenhouse gas (GHG) emissions for reporting and accounting purposes More details can be found in the guidance provided by the GHG Protocol.
Scope 1 emissions are direct GHG emissions that occur from sources owned or controlled by an organisation, including:
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Emissions from stationary combustion, such as boilers and furnaces
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Mobile combustion emissions from company-owned vehicles
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Fugitive emissions, like refrigerant leaks from air conditioning units
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Process emissions from industrial processes and on-site manufacturing
Scope 2 emissions are indirect GHG emissions associated with the purchase and use of electricity, steam, heat, or cooling.
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They result from energy consumption but occur at the facility where the energy is generated.
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For most organisations, electricity consumption is the primary source of Scope 2 emissions.
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These emissions are considered indirect because the organisation doesn't own or control the energy generation sources.