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Net zero strategy, claims and carbon data.

A practical route through net zero definitions, carbon footprints, Scope 1, 2 and 3 emissions, supplier questionnaires, carbon reduction plans, SBTi targets and transition-plan evidence. Start with the claim being made, then check the data behind it.

Updated June 2026 · Measurement, supplier evidence and credible action

Choose your starting point

Claims need evidence Net zero is only useful when the boundary, baseline, data, target, delivery plan and claims language can be checked.
I need the definition What net zero means, what it does not prove and how claims should be read. I am measuring emissions Build a first business footprint using activity data, boundaries and assumptions. I am dealing with Scope 3 Understand supplier, value-chain and purchased-goods emissions without overclaiming. I am checking a transition plan Targets, governance, capex, delivery milestones and evidence investors can test.

Guide map

Net zero guides

Use this page as the entry point for the Net Zero section. It separates definitions, carbon accounting, Scope 3, supplier evidence, reduction plans and transition plans so readers can move from a claim to the evidence behind it.

DefinitionWhat is net zero?The core definition, target boundaries, residual emissions and credible claims.Read guide Accounting rulesGHG Protocol explainedThe accounting framework behind Scope 1, Scope 2 and Scope 3 emissions.Read guide Value chainScope 3 emissions guideSupplier data, purchased goods, category checks and practical starting points.Read guide SME actionSmall business reduction planHow to turn a first footprint into actions, owners, evidence and milestones.Read guide ProcurementCarbon reduction plan templateWhat UK buyers expect to see, what to include and what to avoid.Read guide Transition planningClimate transition plansTargets, governance, capital allocation, delivery milestones and risk.Read guide

Start here

Start with the net zero question you are trying to answer

Net zero is easier to assess when you separate the claim, the carbon boundary, the supplier data and the delivery plan.

What net zero meansWhat is net zero?Check boundary, baseline, residual emissions, target date, reduction pathway and claims language.Read first Net zero vs carbon neutralNet zero vs carbon neutralCheck whether the claim relies on reductions, offsets, removals or a short-term neutrality statement.Read first Business footprintingCalculate a business carbon footprintCheck activity data, emissions factors, reporting period, exclusions and evidence quality.Read first Scope 1, 2 and 3Scope 1, 2 and 3 explainedCheck direct emissions, purchased energy, value-chain emissions and double counting risk.Read first Supplier and value-chain dataScope 3 emissions guideCheck category fit, supplier evidence, estimation methods and whether the data can be repeated.Read first Small business action30-day net zero action planCheck owners, quick wins, first data set, supplier engagement and documented assumptions.Read first Supplier questionnairesSupplier carbon questionnaire guideCheck what the buyer is asking, what evidence you have and where not to overclaim.Read first Corporate targetsSBTi explainedCheck near-term targets, net-zero standard requirements, Scope 3 coverage and current version status.Read first Transition-plan credibilityClimate transition plan guideCheck governance, capex, strategy, risk, milestones and whether the plan changes real decisions.Read first

Evidence and context

From footprint to credible action

These guides help connect carbon data to procurement, software, policy signals and public claims.

SoftwareCarbon accounting software for SMEsWhat tools can help with, what they cannot prove and what evidence to keep.Read guide ProcurementNet zero procurement requirementsWhat suppliers need to know when buyers ask for carbon evidence.Read guide UK policySeventh Carbon BudgetWhy the UK's 2038 to 2042 carbon budget matters for credibility.Read guide Energy contextWorld Energy Investment 2026What global capital flows say about clean energy, grids, fossil fuels and transition pressure.Read guide BriefingLatest net zero updatesShort context pieces for standards, policy and market-moving developments.Read briefings AcronymsSustainability acronyms guidePlain-English definitions for GHG, SBTi, Scope 3, TCFD and other recurring terms.Open guide

Featured

Featured net zero guide

Longer explainers and source-backed analysis from the Net Zero section.

Latest

Latest net zero articles

Newest targets, carbon accounting, Scope 3 and transition-plan guides from the Net Zero section.