ESG for tenders and PQQs

The headline requirement: a PPN 006 Carbon Reduction Plan

For major central-government contracts, the defining ESG requirement is a Carbon Reduction Plan under Procurement Policy Note 006 (PPN 006). It applies to procurements with an estimated value above £5 million per year (including VAT), and a supplier bidding for one of these contracts must have, and publish, a Carbon Reduction Plan that:

• confirms a commitment to achieving net zero by 2050;
• states the organisation’s current carbon footprint; and
• sets out the measures in place, or planned, to reduce it — in a set format.

The key word is gateway. A Carbon Reduction Plan is not scored like a quality answer where a weak response merely loses marks; not having one at all can rule you out of the process entirely. That is what makes it so different from ordinary sustainability box-ticking: a live, winnable bid can be blocked for the want of a single document.

One point of currency matters here, because a great deal of guidance online is out of date. The requirement is now issued as PPN 006, which replaced and updated the older PPN 06/21 to reflect the Procurement Act 2023 and the Procurement Regulations 2024, in force for procurements commenced on or after 24 February 2025. If a competitor’s advice still refers only to “PPN 06/21”, it has not kept up — and on a compliance document that can matter.

Beyond central government: what PQQs and selection questionnaires ask

The Carbon Reduction Plan is the sharpest requirement, but it is not the whole picture. Beyond central-government contracts, the buyers who now probe ESG hardest are local authorities, NHS bodies, universities and large private customers, and they do it through selection questionnaires and pre-qualification questionnaires. These increasingly ask for:

• your carbon footprint — often Scope 1 and 2 as a minimum, and increasingly relevant Scope 3;
• your emissions-reduction targets, and whether they are credible or externally validated;
• evidence of an environmental management system (for example ISO 14001);
• your policies on wider governance and social issues, such as modern slavery and diversity.

The practical effect is that ESG has become a qualifying discipline across the public sector and much of large-company procurement. A bid that cannot answer these questions cleanly is at a disadvantage before its price and quality are even read.

Why your Scope 3 is your customer’s problem too

There is a deeper reason the questions keep getting harder, and it is worth understanding because it explains why the pressure will not ease. When a large customer or a public buyer reports its own emissions, your emissions are part of their Scope 3 — the value-chain category that, for most organisations, is the largest and hardest part of the footprint. So when they ask you for a carbon footprint and a reduction plan, they are not being bureaucratic; they are managing their own reported numbers. That is why a credible answer from you protects your place in their supply chain, and why we treat Scope 3 and supply-chain emissions as a commercial issue, not just a technical one.

What a compliant Carbon Reduction Plan actually needs behind it

A Carbon Reduction Plan is only as good as the numbers under it. Confirming a net-zero-by-2050 commitment is a sentence; substantiating a current footprint and a credible set of reduction measures is a piece of work. That means a Scope 1 and 2 baseline built to the GHG Protocol using the UK government’s conversion factors, an honest view of the Scope 3 categories that matter, and a costed roadmap of measures that a buyer — and, if it comes to it, an auditor — would find defensible. A plan with a confident target and no substance behind it is exactly the kind of unquantified claim the Competition and Markets Authority’s Green Claims Code targets, so a weak plan can be a liability as well as a missed opportunity.

This is where the reporting and the tender meet. The baseline you build for a Carbon Reduction Plan is the same baseline that feeds a SECR disclosure and a science-based target, which is why we build it once, properly, and let it serve every purpose rather than assembling a throwaway document for each bid.

How the requirement actually reaches you in a bid

It helps to understand the mechanics, because ESG requirements do not all arrive in the same place in a procurement. The Carbon Reduction Plan requirement typically appears as a pass or fail selection criterion: you either have a compliant, published plan or you are excluded, and there is no partial credit. The wider ESG questions — carbon footprint, targets, environmental management, modern slavery and governance — usually sit in the selection questionnaire or pre-qualification stage, where they filter who is allowed to bid at all, and sometimes reappear in the award-stage quality questions where the strength of your answer is scored against competitors. The same evidence therefore has to do two jobs: clear the gate to get you into the process, and then differentiate you once you are in it.

That is why a throwaway document rarely holds up. A buyer’s evaluators are increasingly experienced at spotting a plan with a confident target and nothing underneath it — a footprint that does not reconcile, an emissions boundary that quietly excludes the inconvenient parts of the business, or reduction measures that are aspirations rather than commitments. The plans that pass, and then score well, are the ones built on a defensible baseline with a clear methodology, exactly the discipline the reporting standards demand and exactly what an assurance provider would look for.

It is also worth remembering that a published Carbon Reduction Plan is a public document. Once it is on your website for a bid, it is visible to every other buyer, competitor and stakeholder, and it can be held against you if next year’s figures move the wrong way without explanation. That is an argument for getting it right rather than getting it done: a plan you are comfortable standing behind publicly, with a methodology you can defend and a trajectory you can actually deliver, is an asset; a hurried one is a hostage to fortune. We build them to be the former.

What a compliant, competitive submission looks like

Pulling it together, a submission that both clears the gate and stands up under scrutiny needs a Scope 1 and 2 baseline that reconciles to your energy data, an honest and prioritised view of the Scope 3 categories that dominate your footprint, a net-zero-by-2050 commitment expressed in the required format, and a set of reduction measures that are costed and sequenced rather than listed as good intentions. Where relevant, it also needs the supporting evidence the wider questionnaire asks for: an environmental management system, credible targets — ideally externally validated through the Science Based Targets initiative — and clean governance and modern-slavery policies. None of that can be conjured in the days before a deadline; it is the output of the same reporting programme that serves your statutory obligations, repurposed to the format a buyer wants.

The commercial case for acting before the bid, not during it

The most expensive time to build a Carbon Reduction Plan is the week a tender closes. A baseline built under deadline pressure is harder to get right, harder to assure, and more likely to contain a number you later have to defend. Building it ahead of the pipeline — while you have time to gather clean data and make a proper materiality judgement on Scope 3 — turns a bid-blocker into a standing asset you can reuse across every opportunity. It also compounds: once the baseline exists, each subsequent bid is a matter of updating and re-presenting it rather than starting again, and the same numbers keep your SECR disclosure and your targets current in parallel. For a business whose growth depends on public-sector or large-corporate work, that is not a compliance cost; it is the price of staying eligible to compete, paid once and drawn on repeatedly.