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    SECR Reporting Explained: Who Must Report and What to Include

    SECR (Streamlined Energy and Carbon Reporting) requires UK quoted companies, and large unquoted companies and LLPs, to report their energy use and greenhouse gas emissions in their annual report. A company is large if it meets two of three tests: turnover of £36m or more, balance sheet of £18m or more, or 250 or more employees. Scope 3 is optional.

    Last updated 26 October 2026 · By Tom Wilford, Founder, Ella

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    Who has to report

    Watch the thresholds. From April 2025 the general company size thresholds rose, but the SECR thresholds did not. A company that is now classed as medium-sized for accounts can still have to include SECR disclosures.
    Who has to report
    OrganisationIn scope if
    Quoted companiesAlways, reporting global energy use and emissions
    Large unquoted companiesTwo of three: £36m turnover, £18m balance sheet, 250 employees
    Large LLPsSame two-of-three tests
    Low energy usersExempt if UK energy use is 40,000 kWh or less, but must state the exemption

    What you must report

    1. UK energy use in kWh: electricity, gas and transport fuel (quoted companies report global figures). 2. Scope 1 and Scope 2 emissions in tonnes of CO2e. 3. At least one intensity ratio, such as tCO2e per £m of revenue or per employee. 4. The methodology used, typically the GHG Protocol with UK government conversion factors. 5. A description of energy efficiency actions taken in the year. 6. Previous year figures for comparison, from your second reporting year onwards.

    Where and when it goes

    SECR disclosures sit in your annual report: the directors' report for companies, or a separate energy and carbon report for LLPs. They are due with your accounts, so the deadline follows your normal Companies House filing date.

    How to get it done

    Most of the work is collecting data: meter readings and utility bills for every site, and mileage or fuel data for company vehicles and grey fleet. Convert these to emissions using the current year's UK government conversion factors, calculate your intensity ratio, and write a short narrative on what you did to improve efficiency.

    What is changing

    The core SECR rules remain in place. UK Sustainability Reporting Standards (UK SRS), based on the ISSB standards, are being introduced for voluntary use, and the government is consulting on whether they become mandatory for some companies. Building good emissions data now prepares you for either outcome.

    How Ella helps

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    Frequently Asked Questions

    Does SECR include Scope 3?

    Scope 3 is optional under SECR. You must report Scope 1 and 2 emissions and energy use.

    When are SECR reports due?

    With your annual report and accounts, so the deadline follows your Companies House filing date.

    Do charities have to report under SECR?

    SECR applies to quoted companies, large unquoted companies and large LLPs. A charity is caught only if it is set up as one of those entities and meets the size tests.

    Does the public sector report under SECR?

    No. Public sector bodies follow separate government reporting requirements.

    What is the SECR low energy exemption?

    Companies using 40,000 kWh of energy or less in the UK in the period can be exempt, but must state that they qualify.

    Did the April 2025 threshold changes affect SECR?

    No. The SECR thresholds stayed at £36m turnover, £18m balance sheet and 250 employees, even though general company size thresholds rose.

    What intensity ratio should I use?

    Any ratio that suits your business, commonly tCO2e per £m revenue, per employee or per square metre. Keep it consistent year to year.

    Can Ella prepare our SECR report?

    Yes. Ella collects your energy data, calculates Scope 1 and 2 emissions with current conversion factors and drafts the SECR disclosure for review.

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