Public Sector Bids
Apr 4, 2026
4 Reasons Your Carbon Reduction Plan Will Fail a Public Sector Bid
You are midway through a lucrative public sector or NHS tender. The bid looks strong. Then you reach the Selection Questionnaire stage and encounter a mandatory, pass/fail requirement: a compliant Carbon Reduction Plan (CRP).
If yours is missing, or does not meet the strict government formatting rules, your bid is automatically disqualified. No exceptions, no extensions.
For many SMEs, this is the moment a solid bid unravels. What follows are the four most common reasons CRPs fail - and exactly what to do about each one.
First, a quick recap: what is a Carbon Reduction Plan?
A Carbon Reduction Plan is a formal, public document that sets out your company’s current carbon footprint and your commitment to achieving Net Zero by 2050 at the latest. Under the PPN 006 framework, it is required for any supplier bidding on central government or agency contracts valued at £5 million or more per annum, and for NHS contracts across an expanding range of procurement categories regardless of value.
Local councils, universities, and police forces are also increasingly adopting the same requirement in their own tendering processes - so the mandate extends well beyond central government in practice.
Crucially, a CRP is not a general sustainability statement. A PDF explaining that your office recycles and uses LED bulbs will result in an immediate fail. The document requires a mathematically verified, DEFRA-backed calculation of your UK operational footprint, aligned with both the GHG Protocol and, where applicable, the ISO 14064 standard.
Mistake 1: Guessing the numbers
The most common error - and the easiest for auditors to spot - is estimated data. You cannot approximate your Scope 1 (direct fuel combustion) and Scope 2 (purchased electricity) emissions. Your raw utility and fuel data must be converted using the latest official DEFRA conversion factors, and your methodology must align with the GHG Protocol.
If the calculations do not stack up, the submission is rejected. Auditors check the arithmetic.
The fix: Use actual meter readings and fuel invoices. If you work with a specialist, they will process your raw data against current DEFRA factors - no guesswork involved.
Mistake 2: Assuming zero emissions because you don’t pay the bills
Many SMEs operate from leased offices, serviced workspaces, or co-working environments where energy costs are bundled into the rent. A common assumption is that because there is no direct utility bill, Scope 1 and 2 emissions are zero.
Under the GHG Protocol, you are still required to report your proportional share of the building’s energy consumption. An auditor reviewing an office-based business with zero reported emissions will flag it immediately.
If you do not have access to direct meter readings, compliant proxy calculations based on your floor space, headcount, and official DEFRA benchmarks are permitted - but they must be documented. This is standard practice and nothing to be concerned about; what matters is that the methodology is sound and recorded.
There is one exception. If your office is a fully serviced space where you have no operational control over utilities and cannot obtain consumption data, the energy emissions fall under Scope 3 Category 8 rather than Scope 1 or 2. In this case, reporting zero for Scope 1 and 2 at that location is technically correct under the GHG Protocol operational control approach, provided the boundary decision is clearly documented in your methodology.
The fix: Never submit zero for Scope 1 or 2 without documented evidence. In the vast majority of cases, a proportional estimate is required, and a good specialist will handle this as part of the standard process.
Mistake 3: Missing the mandatory five Scope 3 categories
This is where the majority of DIY plans fail. The government does not require you to report all 15 categories of Scope 3 emissions, but it does require five specific ones. Omitting even one makes your plan non-compliant:
• Business Travel (flights, trains, taxis, hotels)
• Employee Commuting (how your staff travel to work)
• Waste Generated in Operations
• Upstream Transportation and Distribution (deliveries to you)
• Downstream Transportation and Distribution (deliveries from you)
These five categories are not optional additions - they are mandatory fields in the PPN 006 framework. If your plan lacks reported data for any of them, it will be rejected.
If you do not have precise figures for all five - for example, exact commuting data for every member of staff - DEFRA proxy methods exist for each category. The key is that whatever approach you use is documented and defensible.
The fix: Treat these five categories as a non-negotiable checklist before submission. If you are unsure how to calculate any of them, a specialist will handle the methodology and ensure the figures are compliant.
Mistake 4: Getting the governance wrong
Even a mathematically perfect CRP will fail if the governance is not in place. A compliant plan must be:
• Formally signed off at board level or by a company director
• Published publicly on your company website
• Live at the time of bidding - the tender portal requests a URL, not just a file upload
A draft sitting in someone’s downloads folder, or a document signed by a department manager rather than a director, does not meet the standard. The governance requirement is non-negotiable.
The fix: Build the sign-off and publication steps into your bid timeline. Allow at least two to three working days for board review and website upload before the submission deadline.
Working to a tight deadline?
If you are mid-bid and have just hit the CRP requirement for the first time, 10 working days is our standard turnaround - but if your deadline is closer than that, get in touch on your discovery call so we can understand your timeline. We have helped SMEs meet urgent tender deadlines before, and it is always worth a conversation.
Your CRP is not a one-off document
DEFRA conversion factors are updated annually and your operational footprint changes as your business evolves. A CRP produced without an annual refresh will use outdated emissions factors and will not include your most recent emissions data, meaning it no longer accurately reflects your business and risks failing compliance checks on your next submission.
Building in an annual review process protects future bids and ensures your published document remains accurate and audit-ready.
Get your CRP right, first time
At CarbonSync, our process is designed specifically for UK businesses bidding on public sector and NHS contracts. You provide standard exports from your accounting software - we handle the calculation, formatting, and compliance review.
Fixed fee of £2,950. Delivered within 10 working days. Ongoing support included throughout your first year, with your annual refresh available at renewal. Book a discovery call to discuss your requirements or view our Carbon Reduction Plan service for full details.
