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Definition

Insurance-associated emissions

Insurance-associated emissions quantify the share of greenhouse gas emissions from insured customers or activities attributed to a (re)insurer's covered commercial, project, personal motor, or treaty reinsurance portfolio.

What are insurance-associated emissions?

Insurance-associated emissions attribute part of an insured customer's greenhouse gas (GHG) emissions to a (re)insurer's underwriting portfolio. PCAF Part C provides methods for commercial, project, personal motor and treaty reinsurance. The result is a supplementary note within Scope 3 Category 15.

Why do insurance-associated emissions matter to you?

An insurer may ask for your company's revenue and emissions to calculate its portfolio figure. If revenue, emissions and policy cover different entities or periods, the insurer cannot reproduce the attribution or assign the right data-quality score.

How are insurance-associated emissions calculated?

For commercial lines, start with annual gross written premium, the total amount the customer owes for policies written in the period. Subtract external acquisition costs, such as outside broker fees, then divide by customer revenue. Multiply that attribution factor by the customer's annual emissions. PCAF requires Scope 1 and Scope 2. Include customer Scope 3 only when it is available as a reasonable, verifiable estimate, and report it separately from Scope 1 and Scope 2.

What mistakes should you avoid?

  • Using the policy's liability limit instead of the premium in the numerator.
  • Mixing parent revenue with subsidiary emissions.
  • Adding the result to financed emissions.
  • Hiding excluded lines of business or estimated customer data.

Are insurance-associated emissions the same as financed emissions?

No. Financed emissions arise from loans and investments. Insurance-associated emissions arise from underwriting risk without ownership or direct operational control. PCAF says the two figures cannot be added or compared directly.

Is PCAF insurance reporting mandatory?

PCAF describes its method as voluntary. A law, regulator, investor or company policy may create a separate reporting obligation, so confirm the requirement that applies to your (re)insurer.

What should you send when an insurer asks for data?

Send the insured entity name, reporting period, revenue, GHG inventory by scope, calculation method, verification status and source files. Confirm which policy and subsidiary the request covers before sharing figures.

Example

Suppose a steel fabricator in South Africa reports ZAR 600 million revenue and 45,000 tCO2e of combined Scope 1 and Scope 2 emissions for 2026. Its insurer writes annual commercial cover with ZAR 3 million gross written premium and ZAR 180,000 of external acquisition costs.

The PCAF premium numerator is ZAR 3,000,000 - ZAR 180,000 = ZAR 2,820,000. The attribution factor is ZAR 2,820,000 / ZAR 600,000,000 = 0.47%. The insurer attributes 45,000 tCO2e x 0.47% = 211.5 tCO2e. This hypothetical calculation uses reported company emissions, not an emission factor.

Where it comes up

Related terms

Sources

Last verified 2026-08-21

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Insurance-associated emissions Definition | Keslio