From the vocabulary through to measurement, the order of reduction levers, carbon pricing and border measures, the legitimate role of credits and removals, and what target frameworks now expect. Written for people who have to build a plan rather than describe one.
Six sections, from vocabulary to transition plans
Decarbonization, carbon neutral, net zero
Three words used interchangeably in meetings, with three different meanings. Fixing this early prevents a lot of rework.
The practical rule: define which term your organisation is using, in writing, before you publish a target. Most credibility challenges are not about ambition — they are about a claim that turns out to mean less than the word suggested.
Measure before you plan
A reduction plan built on an unreliable inventory produces work that has to be redone. Sequence matters.
Start with Scope 1 and 2 properly, then estimate Scope 3. For most companies Scope 3 is the large majority of the total, so a plan that ignores it is a plan for the small part of the problem.
Two choices shape everything downstream. The organisational boundary (equity share, financial control or operational control) determines what is inside the number. And for Scope 2, the location-based versus market-based distinction determines whether renewable electricity contracts show up at all — market-based accounting is what makes a PPA or a certificate visible in your inventory.
Set a base year and a recalculation policy at the same time as the first inventory. Restating later without a stated policy is the fastest way to lose the trust of a rating agency or an assurance provider. Method detail is in the Scope 3 complete guide.
The order of reduction levers
There is a conventional sequence, and following it is both cheaper and easier to defend.
- 1. Use less energy. Efficiency, controls, heat recovery, electrification of low-temperature heat. Usually the best return and never contested as a claim.
- 2. Buy cleaner electricity. On-site generation, corporate PPAs, utility green tariffs. This is where the largest single step change normally comes from.
- 3. Use certificates for the remainder. Unbundled attribute certificates close the gap, but they carry the weakest claim to additionality.
- 4. Offset or remove only what is left. Residual emissions, with quality and permanence assessed explicitly.
Steps 2 and 3 are where most disputes arise, because they look similar on a slide and are very different in substance. Contract structures — physical PPA, virtual PPA, green tariff, certificate purchase — differ in who bears price risk and in whether new generation is actually built. The renewable procurement and PPA guide works through the options.
A newer requirement is worth planning for: buyers and standard setters are moving towards matching clean electricity to consumption by hour and by grid rather than annually and globally. Contracts signed today on an annual-matching basis may not satisfy a customer requirement in a few years.
Carbon pricing, and the border measure
Once emissions carry a price, decarbonization stops being a sustainability question and becomes a cost question.
For exporters, CBAM is the mechanism that makes emissions data a commercial document rather than a report. Covered goods are concentrated in carbon-intensive materials, and the practical requirement is being able to supply verified embedded emissions per product to your EU customer. Companies that cannot supply it risk default values applied against them.
Credits, removals, and where they legitimately fit
The market has moved from “buy credits to be neutral” towards “reduce first, remove the residual”.
Carbon credits represent avoided or removed emissions, issued under a methodology and registry. Quality varies enormously, and the differences that matter are:
- Avoidance versus removal. Avoided emissions prevent a projected release; removals take carbon out of the atmosphere. Net-zero frameworks treat only removals as suitable for neutralising residual emissions.
- Permanence. How long the carbon stays out — decades for some nature-based approaches, centuries or more for geological storage.
- Additionality. Whether the outcome would have happened anyway.
- Double counting. Whether the same tonne is also claimed by a host country or another buyer.
Because of this variance, the safe posture is to treat credits as a small, clearly-labelled component, disclosed separately from gross reductions — never netted into a headline reduction figure. Regulators are moving the same way: environmental claims rules in the EU are tightening precisely around neutrality claims supported by offsets.
Targets, transition plans and climate risk
A target is a statement of intent. What gets examined now is the route and the exposure.
Science-based targets are reduction targets aligned with a warming limit and validated against a published method, which is why they are read as more credible than self-declared goals. The requirements have been tightening — notably around how value-chain emissions are treated in net-zero claims.
Alongside the target, disclosure frameworks now ask for a transition plan: the actions, capital, dependencies and assumptions that connect today to the target. This is the part that separates companies with a plan from companies with an ambition.
The mirror image is climate risk. Physical risk covers acute events and chronic change affecting assets and supply chains; transition risk covers policy, technology, market and reputational shifts. Scenario analysis is how these are tested, and IFRS S2 expects the results to be disclosed where used. Policy direction itself is now a live risk factor — the North American policy analysis covers the federal-versus-state divergence that companies operating in the US now have to plan around.
The questions that decide whether a plan holds up
Is carbon neutral the same as net zero?
No. Carbon neutral describes a balance that can be achieved largely by purchasing offsets, and says nothing about how much was reduced first. Net zero, as used by recognised target frameworks, implies deep reduction across the value chain with only residual emissions neutralised by permanent removals. Choose the term deliberately and define it where you publish it.
Where does the biggest reduction usually come from?
For most companies, from electricity — energy efficiency followed by cleaner purchased power. It is the step with the clearest business case and the least exposure to claims criticism. Heat, process emissions and Scope 3 are harder and take longer, which is why they should be started early even though they deliver later.
Are carbon credits acceptable?
For residual emissions, disclosed separately, with quality assessed — yes. As a substitute for reduction, no. Distinguish avoidance from removal, check permanence and additionality, and never net credits into a headline reduction number. Environmental claims regulation is tightening around exactly this practice.
Does CBAM apply to us if we are not in the EU?
The reporting and payment obligations sit with the EU importer, but the embedded emissions data has to come from the producer. In practice that means EU customers ask their suppliers for verified product-level emissions, and default values are applied where data is missing. It functions as an export requirement even though it is not addressed to you.