ESG Materiality Assessment: How to Identify Your Most Significant Impacts

An ESG materiality assessment is the foundation of any credible sustainability strategy. It determines which environmental, social and governance topics are significant enough to disclose and act upon, focusing organisational effort where it matters most for both business resilience and societal impact. ^[1] Under the EU’s Corporate Sustainability Reporting Directive (2022/2464), a formal esg materiality assessment is a mandatory prerequisite for preparing a sustainability report. Yet its value extends well beyond compliance: organisations that conduct a rigorous assessment gain a structured view of where their operations create the greatest positive and negative impacts, enabling more targeted investment and more transparent stakeholder communication.

What Is an ESG Materiality Assessment?

A materiality assessment is a structured process through which an organisation identifies, evaluates and prioritises the sustainability topics that are most significant to its business and its stakeholders. The output is typically a ranked list of material topics, often visualised as a materiality matrix, which informs the content and depth of the organisation’s sustainability report. ^[2]

The concept of materiality originates in financial reporting, where information is considered material if its omission or misstatement could influence the decisions of users of financial statements. ESG materiality adapts this principle to sustainability, asking which topics are significant enough that stakeholders would want them disclosed and which topics represent genuine business risk or opportunity. ^[3]

Organisations that have completed a robust carbon data collection process before their materiality assessment typically find the exercise faster and more accurate, because quantified emissions data provides concrete evidence for scoring climate-related topics against both financial and impact thresholds.

Double Materiality vs. Single Materiality

The term “double materiality” describes a two-dimensional approach to assessing which sustainability topics are significant. It was introduced as a core requirement of the EU’s ESRS standards under the CSRD and differs from the single-materiality approach used by frameworks such as ISSB, which focuses exclusively on investor-relevant financial information. ^[4]

Under the double materiality framework, a topic is considered material if it is significant from either perspective, not necessarily both. Climate change, for example, is almost universally material under both dimensions: organisations affect the climate through their emissions (impact materiality) and are in turn affected by physical and transition climate risks (financial materiality). ^[5]

The ESRS Omnibus amendments adopted in 2025 refined the assessment methodology, moving towards a more strategic, top-down approach that emphasises identifying material topics based on business model and stakeholder priorities rather than granular bottom-up evidence collection. This makes it more proportionate for mid-sized organisations while maintaining rigour for large groups. ^[6]

How to Conduct an ESG Materiality Assessment: Step by Step

The EFRAG Implementation Guidance on Materiality Assessment (IG1) provides a four-step framework that has become the reference process for CSRD-aligned esg materiality assessments. ^[7] The steps below expand on this framework with practical guidance.

Step 1: Define scope, context and stakeholder strategy

Before identifying any topics, the organisation must map its business model, value chain, sectors of activity and geographies of operation. This contextual picture determines which sustainability matters are even potentially relevant. At this stage, the team defines which stakeholder groups to engage (employees, suppliers, customers, local communities, investors, NGOs) and how engagement will be conducted (surveys, interviews, workshops or proxy analysis of third-party research). ^[8]

Step 2: Identify a long list of potential sustainability topics

Drawing on the contextual picture from step 1, the team compiles a long list of potential impacts, risks and opportunities (IROs) across environmental, social and governance dimensions. The 31 disclosure topics listed in the ESRS provide a starting-point taxonomy covering climate, pollution, water and marine resources, biodiversity, circular economy, own workforce, value chain workers, affected communities, consumers and governance. ^[9] Not all topics will be relevant for every organisation: a production company’s long list will differ significantly from that of a mining company.

Step 3: Score each topic for impact materiality and financial materiality

Each IRO on the long list is scored against defined criteria. For impact materiality, the criteria are: scale (how grave the impact is), scope (how widespread it is across the value chain) and irremediability (whether damage can be undone). For financial materiality, the criteria are the likelihood of the risk or opportunity materialising and the magnitude of its financial effect. ^[1] Stakeholder input gathered in step 1 informs these scores, corroborating or challenging internal assessments with external perspectives.

Step 4: Apply a threshold and produce the materiality matrix

Once all topics are scored, a threshold is applied to separate material from non-material topics. The results are typically plotted on a two-axis matrix with impact materiality on one axis and financial materiality on the other. Topics in the upper-right quadrant score high on both dimensions and require the most comprehensive disclosure and management attention. The matrix becomes a communication tool with leadership and external stakeholders, making prioritisation transparent and auditable. ^[10]

Step 5: Validate, disclose and review

The materiality assessment outcome must be validated by senior management or the board before being incorporated into the sustainability report. Under the CSRD, the assessment process itself must be disclosed: companies must explain how they identified IROs, how they engaged stakeholders and how they applied materiality thresholds. The assessment is not a one-time exercise; it must be reviewed whenever there is a material change in the business model, value chain or regulatory environment.

Common Pitfalls to Avoid

Despite the availability of detailed guidance, many organisations make avoidable errors in their first esg materiality assessment. PwC’s analysis of early CSRD adopters identified ten recurring pitfalls. ^[11] The most consequential include:

Treating the assessment as a compliance exercise rather than a strategic tool: organisations that conduct the assessment solely to fulfil a reporting obligation miss the opportunity to use materiality findings to inform capital allocation, risk management and stakeholder engagement priorities.

Limiting stakeholder engagement to internal teams: the ESRS requires engagement with affected stakeholders or their representatives, not just internal sustainability teams. Relying exclusively on management views systematically underweights community and supply chain perspectives.

Failing to cover the full value chain: Scope 3 emissions and upstream labour conditions are frequently under-represented in assessments because organisations focus on what they can directly observe and measure. Yet value chain impacts are often where the most significant impacts, and therefore the most significant regulatory exposure, reside. Tools that integrate with supplier data systems help extend the data perimeter to the full value chain.

Not establishing a clear threshold: without a documented, defensible threshold, materiality determinations appear arbitrary and are difficult to defend in third-party assurance or regulatory review. The threshold methodology should be documented and consistently applied.

Materiality Assessment in Media Production and Live Events

For media production companies, the esg materiality assessment process surfaces a distinctive set of high-priority topics. The most consistently material issues in the sector include Scope 1 and 3 greenhouse gas emissions from production operations, labour conditions across freelance and contractor supply chains, energy consumption in studios and post-production facilities, and waste generation from set construction and event logistics. ^[12]

Climate change emerges as doubly material for most production companies: their activities generate significant emissions (impact materiality), while physical climate risks such as extreme weather and location disruption, and transition risks such as carbon pricing and broadcaster sustainability mandates, create growing financial exposure (financial materiality). ^[13] Mapping these risks and impacts requires reliable production-level emissions data as input to the scoring exercise.

Live event operators face an additional layer of materiality complexity: audience and artist travel typically represents the largest single source of emissions at major events, yet it sits deep in Scope 3 and requires estimation methodologies rather than direct measurement. Social topics including community noise impact, venue accessibility and local economic contribution frequently score high on impact materiality for operators in residential or cultural heritage areas.

The case studies available on the TheGreenShot website illustrate how production companies and event operators across Europe have used structured carbon measurement as the starting point for a broader materiality exercise, building a data foundation that supports both CSRD disclosure and the strategic identification of emissions reduction priorities. GreenPro’s automated carbon tracking generates the production-level data that feeds directly into the environmental dimension of the materiality scoring process.

GreenPro, TheGreenShot’s carbon tracking platform, automates the collection of emissions data across all production cost categories, supplying the quantified evidence that is essential for scoring climate topics in an esg materiality assessment. Its AI-powered invoice analysis and accounting system integration remove the manual data collection barrier that has historically prevented smaller production companies from conducting rigorous assessments.

Conclusion

An esg materiality assessment is more than a compliance requirement: it is the analytical foundation on which coherent sustainability strategy is built. Organisations that conduct the assessment rigorously, engaging a broad range of stakeholders and scoring topics against both impact and financial dimensions, gain a clear roadmap for where to invest sustainability effort, what to disclose and how to communicate with investors and regulators. ^[4] The revised ESRS guidance has made the process more proportionate and strategic, reducing the administrative burden for in-scope companies while maintaining the core logic of double materiality. For media production companies and live event operators, the exercise begins with credible emissions data: without it, scoring climate topics remains subjective and the resulting materiality matrix lacks the quantitative foundation that third-party assurance requires.

FAQ

Going further with TheGreenShot