Managing Insurance-Associated Emissions for Asset Owners

The Strategic Importance of Insurance-Associated Emissions

For asset managers and owners, the landscape of portfolio carbon footprinting is rapidly expanding. While much of the initial focus has resided on direct financed emissions from equity and debt, a significant new frontier has emerged: insurance-associated emissions. This category, often aligned with Scope 3 Category 15 under the Greenhouse Gas Protocol, represents the emissions related to the underwriting portfolios of insurance companies. For an asset owner with significant holdings in the insurance sector, understanding these emissions is not just about transparency, it is about accurately assessing the climate impact of their entire investment universe.

The challenge for many financial institutions is that insurance-associated emissions are inherently complex to calculate. Unlike a standard loan where the link between capital and activity is direct, insurance provides a risk-mitigation service. However, the Partnership for Carbon Accounting Financials (PCAF) has provided a clear methodology to bridge this gap. By leveraging verified company emissions data, asset managers can now move away from broad sector averages and towards a more granular, entity-level understanding of their portfolio carbon intensity.

Why Asset Managers are Prioritising Underwriting Data

Asset managers are increasingly being asked by their own stakeholders to provide a comprehensive view of climate risk. When a portfolio includes large-scale insurers, the insurance-associated emissions linked to those insurers can dwarf their operational footprints. Without this data, a portfolio carbon footprint is fundamentally incomplete. By integrating high-quality emissions intelligence, investment teams can identify which insurers are successfully transitioning their underwriting portfolios toward net-zero and which remain exposed to high-carbon industries.

The shift from estimated averages to verified, company-level data is the single most important step in making insurance-associated emissions a decision-ready metric for asset owners.

Navigating PCAF Standards for Insurance-Associated Emissions

The PCAF methodology for insurance-associated emissions provides a standardised framework for measuring the carbon footprint of commercial lines and personal motor vehicle insurance. For asset managers, this framework is essential because it introduces the concept of PCAF data quality scores. These scores, ranging from 1 (verified emissions) to 5 (proxy-based estimates), allow financial institutions to assess the reliability of the data they are using for reporting and stewardship.

Understanding the PCAF Data Quality Score

In the context of insurance-associated emissions, achieving a high data quality score requires access to a robust corporate emissions database. Many insurers still rely on top-down estimates based on industry codes, which often result in a score of 4 or 5. To move toward scores of 1 or 2, asset managers need to empower their portfolio companies to report primary data. This is where an emissions intelligence layer becomes vital, providing the provenance and version control needed to satisfy audit requirements and internal risk assessments.

• Score 1: Verified emissions data from the insured entity.
• Score 2: Unverified emissions data reported by the company.
• Score 3: Activity-based estimates (e.g., fuel consumption).
• Score 4: Economic-based estimates using sector averages.
• Score 5: Broad estimates based on limited data.

The Role of Private Company Emissions Data

One of the primary hurdles in calculating insurance-associated emissions is the lack of public disclosure from private companies within an insurer's portfolio. While listed companies often provide sustainability reports, the long tail of private enterprises is often a black box. Asset managers require a data provider that can fill these coverage gaps by aggregating reported vs estimated emissions from a wide variety of sources, ensuring that the portfolio carbon intensity reflects the actual reality of the underlying assets.

Solving the Data Quality Gap in Portfolio Carbon Intensity

To accurately report on insurance-associated emissions, asset managers must reconcile disparate data points. The old way of doing this involved manual spreadsheets and fragmented portals, often leading to audit ping-pong and data that was out of date by the time it was published. The new approach relies on a single source of truth where verified supplier data and company emissions data are normalised and verified.

Moving Beyond Sector Averages

Relying on sector averages is no longer sufficient for sophisticated asset owners. If an insurer provides coverage for a renewable energy project and a coal plant, a sector-average approach might treat them similarly if they fall under the same broad industrial classification. By using entity-level emissions data, asset managers can distinguish between these risks. This level of detail is crucial for calculating the weighted average carbon intensity (WACI) of a portfolio and for setting credible reduction targets.

Improving Portfolio Emissions Coverage

Coverage gaps are the enemy of accurate reporting. When a significant portion of insurance-associated emissions is based on guesswork, the entire climate strategy of the asset manager can be called into question. Using a platform that maps hundreds of thousands of organisations allows for an immediate increase in portfolio emissions coverage. This speed to value means that first outcomes can be realised in weeks rather than months, using data that the organisation may already have but has not yet unified.

From Disclosure to Stewardship: Using Emissions Intelligence

Measuring insurance-associated emissions is only the first step. For asset managers, the ultimate goal is to use this data to drive real-world reductions through stewardship and engagement. When an asset manager can show an insurer exactly where their underwriting hotspots are, the conversation shifts from abstract goals to concrete actions.

Climate Engagement Data for Asset Owners

Stewardship teams require climate engagement data that is both accurate and actionable. If an insurer is shown to have high insurance-associated emissions, the asset manager can engage with the board to understand their phase-out plans for high-emitting sectors or their strategies for supporting clients in their transition. This data-driven approach builds trust and ensures that engagement efforts are focused where they will have the most significant impact.

Integrating Emissions Signal into Investment Decisions

Just as procurement teams are starting to see an emissions signal before a purchase order is raised, asset managers are beginning to integrate insurance-associated emissions into their pre-investment due diligence. By understanding the carbon trajectory of an insurer before increasing a position, investment teams can avoid