ESRS E1 Climate Change: Complete Implementation Guide

An end-to-end implementation guide for translating material climate impacts, risks and opportunities into a controlled ESRS E1 disclosure system.

ESRS E1 applies when climate change relates to material impacts, risks or opportunities under the ESRS double-materiality process. The materiality assessment should cover climate-change mitigation and adaptation and consider own operations and the upstream and downstream value chain. It should not begin with the assumption that every E1 datapoint is material. Under the revised ESRS materiality filter, the undertaking first identifies material topics and IROs and then determines the material information to disclose.

Climate change is often financially material because physical hazards or transition events can affect assets, operations, supply chains, demand, costs, financing and cash flows. It may also be impact material because the undertaking causes or contributes to GHG emissions or affects adaptation and resilience. The two lenses are assessed separately but the resulting disclosures should show their connections.

Figure 1. ESRS E1 is an integrated system of eleven Disclosure Requirements linked by the material climate IRO register.

The climate IRO register should be more detailed than a list of “physical risk”, “transition risk” and “emissions”. Each record should describe the driver, affected asset, activity, product, geography or value-chain relationship; the impact or financial-effect pathway; time horizon; materiality conclusion; relevant E1 DRs; management response; metrics; data boundary; evidence owner; uncertainty; and governance approval.

The boundary register should reconcile the financial consolidation perimeter to the populations used for energy, GHG emissions, actions, targets and financial effects. ESRS E1 permits use of financial control, equity share or operational control approaches for GHG accounting, but the undertaking still needs to apply ESRS reporting-boundary principles and explain material differences. Acquisitions, disposals, joint arrangements, leased assets and value-chain categories should be addressed consistently.

E1-1 is a strategic consolidation disclosure. It should not be treated as a stand-alone glossy narrative separate from the underlying actions, targets and investments. The key features include GHG emission reduction targets, decarbonisation levers, key actions, investments and funding, approval by the administrative, management and supervisory bodies, integration with overall strategy and an explanation of compatibility with limiting global warming to 1.5°C and EU climate-neutrality objectives.

The disclosure also addresses relevant fossil-related CapEx, key assumptions and dependencies, a qualitative assessment of locked-in emissions from key assets and products, and progress. If the undertaking does not have a transition plan containing the required key features, it discloses that fact and whether and when it expects to adopt one.

Cross-reference E1-5 and E1-6 rather than repeating every action and target, but consolidate the key features into one coherent transition pathway.

Explain whether targets are science-based and compatible with 1.5°C; if not, explain the comparison with reference values and the treatment of future developments.

Identify significant financial resources allocated or expected for approved and announced actions, including funding sources where relevant.

Describe dependencies such as technology deployment, workforce capability, policy support, supplier change, customer demand and future finance.

Assess how existing assets and products create locked-in emissions that could jeopardise delivery or drive transition risk.

For each material climate-related financial risk, classify it as physical or transition risk. Explain the methodology used to assess how assets and business activities in own operations and the upstream and downstream value chain may be exposed and sensitive over short, medium and long time horizons. The process should identify hazards or transition events, screen assets and activities, and assess exposure and sensitivity considering likelihood, magnitude and duration. Physical-risk analysis should consider asset locations and value-chain dependencies.

Under the Commission-adopted revised E1, scenario analysis is not expressed as a universal mandatory method. If it is used, the undertaking discloses the range of scenarios, whether a high-emission physical scenario and a 1.5°C transition scenario were used, temperature outcomes and relevance, scope, assumptions and timing. Scenario analysis may be useful because it supports another framework, regulatory process or management decision, or because it materially improves the risk assessment.

Climate resilience asks whether the strategy and business model are prepared for and can adapt to material climate-related risks. The undertaking discloses the results and strategic implications of its resilience analysis, explains how scenario effects - if scenarios were used - inform its response, and shows how the transition plan and mitigation or adaptation actions contribute to resilience. It also discloses significant uncertainty and the capacity to adjust the strategy and business model over short, medium and long terms.

The analysis should align with the scope of material climate risks and should consider exposures disclosed under E1-11. It is not required to be performed annually in every case; it is updated when the climate IRO assessment is updated. Evidence should show the strategic decisions that resulted from the analysis, not only a model output.

Availability and flexibility of financial resources to manage risks and capture opportunities.

Ability to redeploy, repurpose, upgrade or decommission assets.

Effect of planned mitigation and adaptation investments on resilience.

Dependencies on infrastructure, technology, workforce, suppliers, customers, insurance and finance.

Significant uncertainty and conditions that could change the resilience conclusion.

E1-4 to E1-6 translate the strategic climate story into management response. Policies should identify the material IROs addressed, scope, commitments, ownership and governance. Actions and resources should distinguish mitigation and adaptation actions, implementation status, time horizon, expected or achieved effects, significant resources and dependencies. Mitigation actions should be organised by decarbonisation lever where useful and connect to expected or achieved GHG reductions.

Targets should follow the ESRS general target requirements and the climate-specific rules. Absolute Scope 1, 2 and 3 GHG emission reduction targets should disclose their boundary and coverage, baseline, target year, interim milestones, methodology, compatibility with 1.5°C and how future developments are considered. Gross targets should not net off removals, carbon credits or avoided emissions.

E1-7 requires energy information for own operations in MWh, including consumption by fossil, nuclear and renewable sources. Undertakings in high climate-impact sectors provide additional fossil-fuel disaggregation. Information on own energy production is divided between renewable and non-renewable sources.

The methodology should use final energy consumption, avoid double counting and avoid offsetting consumption through self-generation or certificates. Renewable classification needs credible contractual or technical evidence. The evidence file should retain invoices, meters, fuel records, production data, contracts, certificate information, conversions, estimates, site coverage and reconciliations.

E1-8 requires absolute gross Scope 1, Scope 2 and Scope 3 emissions in tonnes of CO2 equivalent. Scope 2 is reported on both location-based and market-based bases. Scope 3 includes the total and each significant category. The disclosure explains the measurement methodology and provides the required group and other disaggregation. Biogenic CO2 emissions are disclosed separately where relevant.

The inventory must not subtract removals, carbon credits or allowances. The undertaking should document its organisational boundary approach and reconcile it to the ESRS reporting entity. Scope 3 implementation begins with screening all 15 GHG Protocol categories, identifying significant categories and determining data sources and estimation methods. Significant categories are reassessed annually, while a full inventory is updated at least every three years or when a significant change occurs under the revised Application Requirements.

E1-9 separates removals and carbon-credit activity from the gross inventory. For removals and storage, the undertaking discloses relevant project and volume information and addresses reversals. For carbon credits, it discloses credits cancelled during the reporting period, credits purchased but not yet cancelled and the share relating to removals where required.

Any climate-neutrality or similar claim needs careful governance. The disclosure should explain how the claim does not undermine gross emission-reduction targets and should provide relevant information on the integrity and quality of credits. Legal and consumer-protection review may be needed in addition to ESRS technical review.

Where internal carbon pricing is used, explain whether and how it supports decisions and disclose the average price per tonne of CO2 equivalent for each scheme. Common schemes include shadow prices for investment appraisal, internal fees or trading mechanisms. The reported scheme should be reconciled to actual governance and decision processes.

Where carbon-price assumptions also appear in financial-statement impairment or valuation tests, explain consistency or significant differences. A transition-plan price used for strategic screening may reasonably differ from a price used in an accounting model, but the undertaking should not present them as aligned without analysis.

E1-11 brings the climate analysis into financial terms. For physical risks, disclosures address the carrying amount of assets at risk over time horizons, the proportion addressed by adaptation actions and net revenue at risk. For transition risks, disclosures address carrying amounts exposed to transition risk, potential stranded assets using a 1.5°C scenario, the proportion addressed by mitigation, energy-efficiency classes of collateral for relevant financial institutions, potential liabilities and revenue at risk, including fossil-related customer exposure where applicable. Climate-related opportunities may also be described through related assets and revenue.

The methodology should explain scope, assumptions, parameters, limitations and the relationship to scenario analysis. Amounts and assumptions should be connected to the financial statements. Where recognition criteria are not met, anticipated financial effects should not be misrepresented as recognised accounting amounts.

Figure 2. Source systems, methods, controls and governance evidence should form one climate reporting architecture.

The climate evidence map should be managed as a controlled register rather than a folder of attachments. Each evidence item should identify the relevant E1 claim, owner, period, boundary, source, method, version, reviewer, confidentiality status, retention location and release status. High-risk models - GHG, scenario and financial-effect calculations - need explicit model governance and change control.

The most reliable ESRS E1 implementation model is an integrated climate reporting system. The climate IRO register defines the problems and opportunities; the transition plan and resilience analysis explain strategic response; policies, actions, resources and targets show management; energy and GHG metrics measure performance; removals, credits and carbon pricing are disclosed transparently; and anticipated financial effects connect climate to finance. Shared boundaries, assumptions, IDs, evidence and governance transform eleven Disclosure Requirements into one coherent climate story.