Scope 2 emissions

“Buying electricity separates the user from the smokestack. It does not separate consumption from emissions. ”

Scope 2 exists because most organisations consume energy they do not generate. The emissions occur at a power station, district-heating plant or other supplier-owned source, but the demand arises from the reporting organisation’s consumption. The category makes that relationship visible.

The calculation begins with energy use, yet the reported result depends heavily on how electricity is represented. Under the GHG Protocol Scope 2 Guidance, organisations operating in markets with contractual instruments generally report two figures. The location-based method applies average emissions factors for the grid where consumption occurs.

The market-based method reflects qualifying contractual instruments such as supplier-specific products, energy attribute certificates or power-purchase arrangements.

The two figures answer different questions. Location-based reporting asks what emissions are associated with the electricity system serving the site. Market-based reporting asks what emissions are associated with the contractual choices the organisation has made. Neither should be mistaken for a complete description of real-time physical electricity flows.

This distinction has become one of the most contested areas of corporate climate accounting. A company may report a low market-based Scope 2 figure by purchasing certificates while continuing to consume electricity at times and places where fossil generation remains high.

The contractual claim may comply with the accounting rules, but it does not necessarily demonstrate that the procurement caused new clean generation, matched consumption hour by hour or reduced emissions on the grid.

Conversely, location-based figures alone can ignore meaningful procurement decisions and long-term power contracts that help finance renewable capacity. Good interpretation therefore requires both numbers, the quality of the instruments and the context of the market.

Scope 2 can also fall when an organisation electrifies operations previously powered by fossil fuels. Scope 1 decreases while electricity consumption rises. Judging performance scope by scope could make this transition look worse in Scope 2 even when total emissions decline. The appropriate unit of judgement is the overall decarbonisation pathway, not the neatness of one category.

For practitioners, the essential discipline is transparency. Report energy consumption alongside emissions. Explain the instruments used, their geographic and temporal relationship to consumption, and whether residual-mix factors were available. Distinguish accounting claims from causal claims about grid decarbonisation.

Scope 2 is not merely an electricity calculation. It is a test of whether procurement, accounting and physical system change are being described with the same precision.

Practical application

Maintain both location-based and market-based calculations where required. Record the contractual instruments, vintage, geography, supplier information and residual-mix treatment. Pair emissions figures with megawatt-hours consumed and disclose whether procurement is annual, hourly, bundled, unbundled or linked to new capacity.

Why it matters

Electricity purchasing is often central to corporate climate plans. Scope 2 determines whether reported progress reflects lower consumption, a cleaner grid, better procurement or simply a different accounting instrument.

Common misconception

Renewable certificates mean the electricity physically delivered to a facility was generated by the named renewable source. Electricity is pooled on the grid; certificates support an attribute claim under defined rules, not a traced electron.

Connections

Market-based Method and Location-based Method appear later in this climate-accounting sequence. Additionality tests whether procurement caused change beyond business as usual. Grid Emission Factor links electricity use to system emissions.

A question worth asking

Does your Scope 2 reduction describe lower energy demand, a cleaner electricity system, a contractual attribute—or some combination of the three?

Selected references

• GHG Protocol, Scope 2 Guidance. • GHG Protocol, Corporate Standard Frequently Asked Questions. • International Energy Agency, guidance on electricity emissions and clean-energy procurement.