For most companies reporting under CSRD, ESRS E1 is the standard that matters most.
It is almost always material. It draws the most scrutiny from auditors, investors, and regulators. And it is the disclosure most likely to shape how the rest of the sustainability statement is read.
That is not surprising. Climate change is the sustainability topic where methodology is most developed, where stakeholder expectations are highest, and where the financial and operational consequences are becoming most visible. ESRS E1 pulls all of that into a single, structured disclosure standard covering transition plans, risks, targets, emissions, energy, and financial effects.
For ESG teams preparing their first CSRD report, the difficulty is rarely the concept. Most organisations already track some emissions data and have talked about climate ambition in one form or another. The difficulty is the level of structure, evidence, and consistency that ESRS E1 now demands.
This guide walks through what ESRS E1 actually requires, the areas that tend to cause the most friction in practice, and what a credible climate disclosure looks like once everything is brought together.
What ESRS E1 covers
ESRS E1 sets out the disclosure requirements for climate change. It is structured around two halves of the issue: how the company is responding to climate change, and how climate change is affecting the company.
The standard covers a wide landscape, including:
- Climate change mitigation (reducing greenhouse gas emissions)
- Climate change adaptation (managing physical climate impacts)
- Transition plan for climate change mitigation
- Policies, actions, and resources related to climate
- Targets (absolute and intensity, short, medium, and long term)
- Scope 1, 2, and 3 greenhouse gas emissions
- Energy consumption and energy mix
- Internal carbon pricing, if used
- Climate-related risks and opportunities
- Anticipated financial effects from material climate-related risks and opportunities
In other words, ESRS E1 is not just an emissions disclosure. It is a strategic disclosure that links climate to business model, risk management, capital allocation, and future performance.
Start with the transition plan
Under ESRS E1, companies are required to disclose a transition plan for climate change mitigation, or explain why they do not yet have one.
The transition plan is meant to describe how the business is actually going to reduce its emissions over time in line with limiting warming to 1.5°C. Not in aspirational language. In concrete levers, milestones, investment decisions, and governance.
A strong transition plan usually covers:
- Decarbonisation levers across operations and the value chain
- Capital expenditure and operating expenditure aligned with those levers
- Key assumptions, dependencies, and enabling conditions
- How the plan links to the company's strategy and business model
- Governance and board-level accountability for delivery
- Interim milestones and how progress will be tracked
Many first-time CSRD reporters are finding this the hardest part of ESRS E1. It exposes whether climate ambition is backed by real investment plans, or whether it is still a narrative overlay on top of a business-as-usual strategy. Auditors are increasingly asking that question too.
Assess climate-related risks and opportunities properly
ESRS E1 requires companies to identify and assess climate-related risks and opportunities, distinguishing between physical risks and transition risks.
Physical risks arise from the direct impacts of climate change on operations, supply chains, workforce, and assets. Think heat stress, flooding, wildfires, water scarcity, cyclones, and chronic shifts in climate patterns.
Transition risks arise from the shift to a lower-carbon economy. Think carbon pricing, changing customer expectations, regulatory constraints, technology disruption, stranded assets, and reputational exposure.
Both types of risk need to be assessed across multiple time horizons, including short, medium, and long term. Scenario analysis is expected to inform this assessment, including at least one scenario compatible with limiting warming to 1.5°C.
The disclosure is not just a list of risks. It needs to show how those risks were identified, how they interact with strategy, and how the organisation is managing them. Opportunities are part of the same analysis, including access to new markets, resilience advantages, resource efficiency, and sustainable finance.
Set climate targets with substance
ESRS E1 requires companies to disclose climate-related targets, or explain why they do not have any.
Targets are expected to be:
- Time-bound, with clear base years and target years
- Aligned with the 1.5°C pathway where possible
- Supported by a credible methodology
- Covering Scope 1, 2, and where material Scope 3 emissions
- Expressed in absolute terms, not just intensity, where that is meaningful
Interim targets matter as much as long-term ones. A 2050 net zero ambition with no 2030 milestone is not going to pass scrutiny. ESRS E1 pushes companies to show how the pathway between today and the target year is actually going to be delivered.
Companies that rely heavily on offsets, removals, or avoided emissions need to be particularly careful. The standard expects clarity on what is being counted, how, and why it is credible. Mixing reductions, removals, and offsets into a single headline number is a common source of challenge from auditors and external stakeholders.
Get the emissions disclosure right
Scope 1, 2, and 3 emissions sit at the core of ESRS E1. Getting the methodology, boundary, and evidence right is essential.
Scope 1 covers direct emissions from sources the company owns or controls. Scope 2 covers indirect emissions from purchased energy, and must be disclosed using both the location-based and market-based methods. Scope 3 covers the remaining indirect emissions across the value chain, including purchased goods and services, capital goods, transport, waste, business travel, commuting, use of sold products, and end-of-life treatment.
Common friction points:
- Data quality and completeness, especially for Scope 3 categories
- Consistency of emission factors and methodology over time
- Boundary definition across subsidiaries, joint ventures, and investments
- Use of primary versus secondary data, and how the balance is evolving
- Restatements when methodology or scope changes
Even companies with several years of voluntary reporting experience often discover that the level of auditability required under CSRD is higher than what their existing systems were designed for. Spreadsheets, shared drives, and inherited assumptions start to show their limits very quickly.
Energy disclosure is closely linked
ESRS E1 also requires disclosure of energy consumption and the energy mix, broken down by renewable and non-renewable sources, across fossil and nuclear categories.
This is not just a supporting metric. It is closely linked to Scope 2 emissions, market-based accounting, renewable electricity procurement, and the credibility of decarbonisation targets. Inconsistencies between the energy mix disclosure and the emissions disclosure are exactly the kind of thing that gets picked up during assurance.
For companies in energy-intensive sectors, this disclosure also interacts with activities and thresholds that may be relevant under the EU Taxonomy and other frameworks. Consistency across these disclosures is increasingly expected.
Internal carbon pricing, if used
If the company uses an internal carbon price, ESRS E1 requires disclosure of how it is applied, including the price level, the scope of application, and how it is used in decision-making.
If internal carbon pricing is not applied, the company does not need to pretend it is. The disclosure requirement is there to prevent selective or decorative use of carbon pricing in reporting. If a tool is being used to guide capital allocation, it needs to be described honestly. If it is not being used, that is equally valid to disclose.
Anticipated financial effects
One of the newer and more demanding aspects of ESRS E1 is the disclosure of anticipated financial effects from material physical and transition risks and opportunities.
This is not a requirement to produce a fully quantified climate P&L. It is a requirement to describe, in a reasoned way, how material climate-related matters could affect financial position, financial performance, and cash flows over the short, medium, and long term.
Many companies are still building the capability to do this. It usually involves collaboration between sustainability, finance, risk, strategy, and operations teams. Scenario analysis, sensitivity analysis, and qualitative narrative all have a role. The goal is not false precision. The goal is transparency on how climate is feeding into financial thinking.
This is also where ESRS E1 connects directly to the financial statements. CSRD is built on the idea that sustainability and financial reporting should be mutually reinforcing, not parallel universes.
Common pitfalls in ESRS E1 reporting
A few patterns come up repeatedly across first-time CSRD reporters.
First, treating E1 as an emissions report. The standard is much broader. Companies that focus almost entirely on Scope 1 and 2 metrics and under-invest in transition plan, risks, targets, and financial effects tend to produce disclosures that look thin and unbalanced.
Second, inconsistency between climate narrative and other parts of the sustainability statement. If the business model description talks about oil, gas, or carbon-intensive products, but the climate section does not, that is a visible gap. Internal consistency is one of the first things auditors and readers test.
Third, targets without a pathway. Long-dated climate commitments without interim milestones, governance, and aligned capital allocation are one of the most common weaknesses. The transition plan requirement is effectively forcing this gap to close.
Fourth, weak Scope 3 methodology. Many companies have historically limited Scope 3 disclosure to a handful of categories with uneven data quality. Under ESRS E1, the expectation is a structured, defensible methodology across material categories, with a clear roadmap for improvement.
Fifth, treating climate risk as an ESG topic rather than a business risk. Climate risk disclosures that are disconnected from enterprise risk management, strategy, and the financial statements tend to read as bolt-ons. ESRS E1 is designed to prevent that.
How to prepare without reinventing everything
The good news is that most companies are not starting from zero. Existing voluntary reporting, TCFD alignment, CDP responses, and internal climate work can all feed into ESRS E1. The task is less about inventing new disclosures and more about restructuring, evidencing, and deepening what already exists.
A practical preparation sequence tends to look like this:
- Confirm materiality of climate under the double materiality assessment
- Map current climate reporting (voluntary, TCFD, CDP, investor reporting) against ESRS E1 requirements
- Identify the biggest gaps, especially around transition plan, Scope 3, targets, and financial effects
- Upgrade data, controls, and methodology where needed for auditability
- Align governance, strategy, and financial planning with the climate narrative
- Draft the disclosure, then test it for internal consistency and external credibility
- Prepare the evidence file for assurance
This kind of sequencing helps avoid two common traps: either reinventing climate reporting from scratch, or simply reformatting old disclosures into new headings without addressing the real substance gaps.
What good looks like
A high-quality ESRS E1 disclosure does a few things very well.
It presents a credible, numbers-backed transition plan that connects to strategy and capital allocation. It quantifies Scope 1, 2, and 3 emissions with clear methodology and year-on-year consistency. It describes physical and transition risks with genuine depth, not generic climate language. It sets targets that are specific, time-bound, and supported by a clear pathway. It discloses anticipated financial effects in a way that a finance professional can actually engage with. And it maintains internal consistency across the sustainability statement and the financial statements.
Good ESRS E1 reporting is also confident about what is not yet in place. It distinguishes between what is fully embedded, what is in development, and where further work is planned. Regulators, investors, and auditors generally respond better to honest progress disclosures than to overstated positioning.
Final thought
ESRS E1 is demanding, but it is also the area where CSRD reporting delivers some of its clearest business value. A well-run climate disclosure forces alignment between strategy, risk, finance, operations, and sustainability. It exposes weaknesses in data, methodology, and governance that would otherwise stay hidden. And it gives boards, investors, and internal decision-makers a genuinely useful view of how the company is positioned for a low-carbon transition.
For ESG leaders, that is the real opportunity. ESRS E1 is not just a compliance obligation. It is a chance to turn climate from a reporting topic into a disciplined part of how the business is run.
Done well, it becomes one of the most valuable disclosures in the entire sustainability statement.