Understanding the Energy Mix and Guarantees of Origin
Understanding the methodology for energy mix accounting in the Klappir platform.
The energy mix represents the share of renewable and non-renewable energy sources in the energy a company consumes.
It is a core component of sustainability reporting and is directly linked to Scope 2 emissions under the GHG Protocol.
Understanding your energy mix is essential to ensure accurate reporting, prevent greenwashing, and strengthen your organization’s sustainability credibility.
Methodology: Accounting for energy mix and guarantees of origins
This method allows companies to demonstrate renewable energy procurement and align with sustainability reporting frameworks like the CSRD, ESRS, and GHG Protocol.
Market-Based
The market-based approach uses contractual instruments – such as energy supplier contracts, renewable power purchasing agreements, or Guarantees of Origin (GOs) – to calculate emissions based on the specific energy purchased.
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Reflects the certified source of electricity.
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Enables companies to claim renewable electricity use if they hold and cancel valid certificates.
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Follows the GHG Protocol hierarchy for data quality and verification.
Residual Mix
When renewable certificates are sold abroad, or domestic sales and cancellations occur, those renewable attributes are withdrawed from the pool available for domestic residual mix. the domestic grid loses the right to claim that renewable energy. The remaining electricity composition is called the residual mix – typically a higher share of fossil and nuclear sources. The untracked energy generation in Europe get added to the residual mix.
This adjusted mix ensures that sustainability reporting reflects reality rather than market transactions.
Note: By default, we assume that reporting companies do not retain Guarantees of Origin (GOs), and therefore, the general national energy mix is applied based on the country's published residual mix.
Guarantees of Origin (GO)
The Guarantees of Origin system is the European mechanism that verifies renewable electricity generation.
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Each GO certificate represents 1 megawatt-hour (MWh) of renewable energy.
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Companies can claim renewable energy use only if they own and cancel/retire these certificates.
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The system prevents double counting and supports investment in renewable power generation.
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This approach allows organizations to match their electricity use with renewable generation, even if the physical electricity they consume isn’t directly renewable.
How it looks in the Klappir Platform
Energy mix
By default, after you import all your energy consumption, the default view (see below) will be based on the market-based methodology.
Note: If you buy GOs, that needs to be reflected in your energy mix. Send documentation to service@klappir.com for us to register your company specific energy mix.

