Three kinds of thing

  • Free tools answer one question each, such as "do I need a Carbon Reduction Plan?". No account, no email. See all free tools.
  • A plan is the software itself: you add a year of bills, it works out your footprint in tCO2eTonnes of CO2e, the unit a carbon footprint is given in. One tonne is 1,000 kg of greenhouse gases, counted as if they were all CO2.More in the glossary and writes the reports. Every plan makes the Carbon Reduction Plan (CRP)A public document reporting your Scope 1, 2 and selected Scope 3 emissions and committing to net zero. Required for major UK government and NHS contracts.More in the glossary, the SECRStreamlined Energy and Carbon Reporting: the UK law requiring large companies and LLPs to publish energy use and emissions in their annual report.More in the glossary report and the VSMEThe EU's Voluntary Sustainability Reporting Standard for smaller companies: a short, set format for energy, emissions and other figures that EU customers, banks and investors ask their suppliers for.More in the glossary report. See the plans.
  • Add-ons are extra jobs on top of a plan, each with its own price. Most businesses don't need any. See all add-ons.

What has happened?

Find the line that sounds like you. Start with the free tool where there is one: it tells you whether you need to do anything at all.

Someone has asked you for something

The most common reason a business starts. Check first whether you really have to, then make the document.

  • A buyer or a tender asks for a Carbon Reduction Plan

    Free tool
    Do I need a Carbon Reduction Plan?Three questions about your customer and contract that tell you whether PPN 006 or the NHS rules mean you need a plan.
    Plan
    Any plan writes the Carbon Reduction Plan from a year of your bills.
    Add-on
    Public sector tender packCheck your carbon evidence against central government and NHS tender rules, including the April 2027 NHS rules, and copy answers to the carbon and social value questions, filled in from your own figures.

  • You supply the NHS

    Free tool
    NHS supplier carbon checkerFive questions that tell you which NHS net zero rules apply to you now, and what changes in April 2027.
    Plan
    Any plan writes the Carbon Reduction Plan the NHS asks for.
    Add-on
    Public sector tender packCheck your carbon evidence against central government and NHS tender rules, including the April 2027 NHS rules, and copy answers to the carbon and social value questions, filled in from your own figures.

  • Your accountant mentions SECR, or your company is large

    Free tool
    Do I need to report under SECR?Check whether your company or LLP must include energy and carbon figures in its annual report.
    Plan
    Any plan writes the SECR report for your annual accounts.

  • A customer sends a carbon questionnaire or asks for your footprint

    Free tool
    Supplier questionnaire answer bankModel answers to the 20 carbon questions customers ask suppliers most, filled in from your own figures.
    Plan
    Any plan works out your footprint, so the answers use your real figures.
    Add-on
    Customer questionnaire packAnswers to the carbon questions your customers send, from CDP supply chain to their own forms, filled in from your figures and plan, with each customer's share of your emissions worked out from what they spend.

  • An EU customer, bank or investor asks for a VSME report

    Plan
    Every plan includes the EU VSME report, filled in from the same figures.

  • Your bank's loan has carbon targets in it

    Plan
    A plan gives you the yearly figures.
    Add-on
    Lender and assurance packTrack the carbon targets in your green or sustainability-linked loan year by year from your own figures, with a statement of how the figures were put together and a full change log for your lender or assurance provider.

You want to know your footprint, or cut it

No one has asked yet, but you want the number, or a plan to bring it down.

  • You just want to know your carbon footprint

    Free tool
    kWh to CO2e calculatorTurn electricity, gas and fuel use into carbon emissions with the 2026 government factors, side by side with 2025.
    Plan
    Any plan adds up a whole year, every scope, and compares it with last year.

  • You want a target and a plan to reach net zero

    Plan
    Any plan sets a target in the Carbon Reduction Plan.
    Add-on
    Net zero plannerModel the measures you're considering on your own figures, see the carbon and running-cost effect of each, check your target against the Science Based Targets initiative's rules for smaller companies, and add the plan to your Carbon Reduction Plan.

  • You run company cars or vans and are thinking of going electric

    Free tool
    Electric vs petrol vs diesel car: running cost and CO2 per mileCompare a year's fuel or charging cost and CO2e for petrol, diesel, hybrid and electric cars of the same size, at today's prices.
    Add-on
    Fleet switch plannerEvery company car and van ranked by how much carbon it would save as an electric vehicle of the same size, from the government's conversion factors, with fuel costs per mile from HMRC's advisory fuel rates as a guide.

  • Your customers want a footprint for each product you make

    Plan
    A plan works out the energy your products share.
    Add-on
    Product carbon footprintsA carbon footprint for each of your products, per unit: materials from the government's material factors, your own energy shared across what you make, and delivery to your customer, with each step shown.

You want to save money on energy

Free checks that can find money, with or without an account.

  • You think a site may be paying Climate Change Levy it shouldn't

    Free tool
    Climate Change Levy check: are you paying too much?Seven questions about a site that show the Climate Change Levy you should pay, any you shouldn't, what you could claim back, and whether the VAT on the bills looks right.
    Plan
    Every plan checks the levy on all your sites from your bills.

  • You run a manufacturing site that uses a lot of electricity

    Free tool
    British Industrial Competitiveness Scheme check: could your site be exempt?Six questions that show whether a manufacturing site looks eligible for the electricity levy exemption, how big it would be, and a rough £ guide. Applications close 30 November 2026.

A rule applies to your business

Specific rules that only some businesses have to follow.

  • You import steel, aluminium, cement, fertiliser or hydrogen

    Free tool
    Do I need to register for UK CBAM?Four questions about your imports that tell you whether you must register for the UK CBAM, from when, and your first deadlines.
    Add-on
    CBAM packWork out the embedded emissions and the UK CBAM charge on imports of steel, aluminium, cement, fertiliser and hydrogen. You can buy it without a plan.

  • You are a large business and ESOS applies to you

    Add-on
    ESOS Phase 4 packGet ready for ESOS Phase 4: whether you qualify, your total energy use over the reference period, the 95% you must cover, energy intensity ratios, the deadlines and a draft action plan, ready for your lead assessor.

  • You need to sort and record your workplace waste

    Free tool
    Simpler Recycling check: does your workplace meet the new rules?A few questions that show whether your workplace in England separates its waste the way Simpler Recycling requires, and when the rules apply to you. Micro-firms have until 31 March 2027.
    Add-on
    Waste logKeep the year's waste in one place: tonnes by stream, your recycling rate, and each collector with their carrier registration and any co-collection assessment, checked against the Simpler Recycling rules.

  • You let buildings and need to keep their EPCs in order

    Add-on
    Property energy standardsEach site's Energy Performance Certificate in one place, with expiry dates, and buildings you let checked against the minimum EPC E standard and the proposed EPC B for larger buildings from 2031.

  • A tender asks about flood and heat risk at your sites

    Add-on
    Climate riskFlood and heat risk for each of your sites, with a climate risk summary you can put in a tender or a TCFD-style report.

You work on other people's carbon figures

For advisers and software companies rather than for your own footprint.

  • You are an accountant doing carbon reporting for clients

    Add-on
    Accountant portalRun carbon reporting for your clients from one login, with a dashboard showing where each one is up to.

  • You build software and need official emission factors in it

    Add-on
    Factor APIThe official UK conversion factors, and electricity factors for more than 120 countries and every US power region, in your own software through a simple API.

Which plan?

Every plan makes the same reports. They differ in how much of your business they cover.

  • Starter, £59 + VAT a month: one business with up to 2 sites and 3 users.
  • Growth, £149 + VAT a month: up to 10 sites and 10 users, and you can ask your suppliers for their own figures.
  • Enterprise, from £399 + VAT a month: a group of companies, more sites, or sites outside the UK.

Not sure? Six worked examples with prices, or start the free trial: it includes everything for 14 days, so you can decide later.

Start your free trial Try a free tool

Words you'll meet

Your footprint is split into three scopes: Scope 1Direct emissions from things you own or control: gas boilers, company vehicles, fuel burned on site and refrigerant leaks.More in the glossary is fuel you burn, Scope 2Indirect emissions from the electricity, heat and steam you buy.More in the glossary is the electricity you buy, and Scope 3All other indirect emissions in your value chain, in fifteen categories, from purchased goods to business travel, commuting and waste.More in the glossary is everything else, such as travel and waste. Each bill is turned into emissions with an official Conversion factorA number that turns an activity, such as a kWh or a litre, into kg CO2e. The UK government publishes a new set each June.More in the glossary from DESNZThe Department for Energy Security and Net Zero, which publishes the UK government conversion factors. Older sets were published by DEFRA and BEIS.More in the glossary, the government department that publishes them. Tap any underlined word to see what it means, or read the glossary.