How to Write a Carbon Reduction Plan for UK Government Tenders

Introduction

A Carbon Reduction Plan (CRP) is a formal document required under UK government Procurement Policy Note 006 (PPN 006, formerly PPN 06/21) for suppliers creating carbon reduction plans for tenders over £5 million annually. For a detailed breakdown of PPN 006 requirements, see our guide: PPN 006 Explained.

This guide explains what PPN 006 requires for carbon reduction plans for UK tenders, how to structure a compliant CRP aligned with the GHG Protocol Corporate Standard, and how to avoid common compliance errors.

Whether you are an NHS supplier, construction firm, manufacturer, or professional services provider, this guide covers everything from completing the PPN 06/21 template to understanding Scope 3 emissions requirements.

Important: PPN 06/21 applies to all central government and NHS contracts exceeding £5 million annually. Failure to submit a compliant Carbon Reduction Plan will result in automatic tender disqualification.

What Is a Carbon Reduction Plan?

A Carbon Reduction Plan for tenders demonstrates your organisation's commitment to achieving Net Zero by 2050 and outlines measurable steps to reduce greenhouse gas emissions across Scope 1, 2, and 3.

Under PPN 06/21, suppliers must report Scope 1, 2, and relevant Scope 3 emissions, outline specific reduction actions, and provide a signed management declaration.

The Carbon Stamp aligns all carbon reduction plan calculations to the GHG Protocol Corporate Standard, ensuring accuracy and audit readiness for procurement submissions.

What is PPN 06/21 and Why It Matters for UK Tenders

PPN 06/21 (Procurement Policy Note 06/21, now rebranded as PPN 006 under the Procurement Act 2023) is a mandatory UK government requirement for suppliers bidding on central government and NHS contracts exceeding £5 million annually. In 2025, while the naming changed, the content requirements for carbon reduction plans for tenders remain identical.

Who Must Comply

Any supplier bidding for central government or NHS contracts exceeding £5 million annually must submit a compliant Carbon Reduction Plan.

Unchanged Requirements

The technical requirements — baseline emissions, Scope 1–3 reporting, reduction targets, and signed declarations — remain as specified in the original PPN 06/21 guidance.

What to Include in Your Carbon Reduction Plan

The official Annex A template specifies five mandatory sections for a compliant CRP:

1. Commitment to Net Zero by 2050: A formal statement confirming your organisation's commitment to achieving Net Zero greenhouse gas emissions by 2050 or earlier.
2. Baseline Emissions Data: A complete inventory of Scope 1, 2, and relevant Scope 3 emissions for your chosen baseline year, calculated using GHG Protocol standards.
3. Current Year Reporting: Your most recent emissions data showing progress since baseline, with year-on-year comparison and percentage change.
4. Reduction Targets and Actions: Specific, measurable actions to reduce emissions, including timelines, responsible parties, and expected impact.
5. Signed Management Declaration: Director-level signature confirming accuracy of data and commitment to stated reduction targets.

Understanding the Annex A Template Structure

The PPN 06/21 Annex A template is the standardised format used by all UK government departments to assess Carbon Reduction Plans. Understanding its structure is essential for creating a compliant submission.

How to Complete the PPN 06/21 Carbon Reduction Plan Template

The template requires both quantitative data and qualitative declarations. The four mandatory sections are:

1. Commitment Statement: Must include your organisation's commitment to Net Zero by 2050, aligned with the UK Climate Change Act 2008 (as amended). State your interim reduction targets if available.
2. Emissions Reporting: Report Scope 1, 2, and relevant Scope 3 emissions in tCO₂e. Must use GHG Protocol methodology and DEFRA conversion factors for the reporting year.
3. Reduction Measures: List specific, costed actions with implementation dates. Examples include LED lighting retrofit, EV fleet transition, renewable energy procurement, and supplier engagement programmes.
4. Declaration and Sign-Off: Requires director or board-level signature, confirming data accuracy and commitment to reduction actions. Missing signatures result in automatic non-compliance.

For detailed guidance on completing each section, download the official Cabinet Office template and supporting documentation below.

How Small Businesses Can Complete the PPN 06/21 Carbon Reduction Plan Template

Many small businesses wonder whether they can create their own carbon reduction plan for small businesses or need external support. The answer depends on your internal resources and the complexity of your operations.

Small businesses with straightforward operations (single office locations, minimal industrial processes) can often complete the PPN 06/21 template using publicly available DEFRA conversion factors and basic emissions tracking. However, carbon reduction plans for small businesses still require strict adherence to GHG Protocol Corporate Standard methodology.

Key challenges for small businesses include:

• Accurately categorising Scope 3 emissions without dedicated sustainability staff
• Ensuring calculation methodology meets GHG Protocol standards for audit verification
• Identifying cost-effective reduction measures with measurable impact
• Maintaining annual updates and documentation for procurement compliance

The Carbon Stamp offers scalable carbon reduction plan services specifically designed for small businesses bidding on public sector contracts, providing professional verification at accessible price points.

How to Create a Carbon Reduction Plan (Step-by-Step)

The Carbon Stamp follows a systematic five-stage process to ensure GHG Protocol compliance and procurement readiness:

1. Stage 1: Identify — Define all emission sources across Scope 1, 2, and 3.
2. Stage 2: Collect — Gather and validate activity data from operations.
3. Stage 3: Calculate — Apply DEFRA emission factors under GHG Protocol.
4. Stage 4: Report — Prepare the CRP using Annex A format.
5. Stage 5: Reduce — Implement and track reduction actions.

How Carbon Reduction Plans Support ESG and Net Zero Goals

Carbon Reduction Plans serve a dual purpose: they satisfy procurement requirements while supporting broader Environmental, Social, and Governance (ESG) reporting obligations and Net Zero transition strategies.

The Policy Context: PPN 06/21 and UK Net Zero 2050

PPN 06/21 was introduced in 2021 as part of the UK Government's commitment to achieving Net Zero emissions by 2050, enshrined in the Climate Change Act 2008 (2050 Target Amendment) Order 2019. The policy ensures that public sector procurement drives decarbonisation across supply chains.

Key requirement: CRPs must demonstrate measurable progress toward Net Zero, not just static emissions reporting. Your reduction actions should align with science-based targets where possible.

Integration with SECR and Corporate ESG Frameworks

For organisations subject to Streamlined Energy and Carbon Reporting (SECR), Carbon Reduction Plans complement existing reporting requirements by adding forward-looking reduction commitments and governance accountability.

• SECR Compliance: If your organisation already reports under SECR, your CRP should reference this data and explain how procurement-related reductions contribute to overall targets.
• ESG Reporting Standards: CRPs align with frameworks such as TCFD, CDP, and GRI by providing evidence of climate governance, risk management, and reduction strategy implementation.

Supply Chain Carbon Management

PPN 06/21 requirements cascade through supply chains. As a tier-1 supplier, your own CRP becomes a model for engaging tier-2 and tier-3 suppliers, creating a multiplier effect across entire procurement ecosystems.

This supply chain engagement is critical for Scope 3 reporting accuracy and demonstrates your organisation's commitment to systemic decarbonisation beyond direct operational control.

Carbon Reduction Plan Example for NHS Supplier

Below is a carbon reduction plan example for a UK NHS supplier demonstrating how CRPs are structured for specific sectors and tender requirements. This real-world example shows how an organisation in the healthcare sector has successfully created a compliant carbon reduction plan for tenders.

Case Study: Medicom Healthcare — NHS Medical Equipment Supplier

Challenge: Medicom Healthcare needed a verified Carbon Reduction Plan to maintain eligibility for NHS procurement frameworks exceeding £5 million annually.

Approach: The Carbon Stamp conducted a full GHG Protocol-aligned assessment covering Scope 1, 2, and 3 emissions, with particular focus on supply chain impacts relevant to medical equipment distribution.

Outcome: The verified CRP helped position Medicom Healthcare to comply with PPN 006 requirements, strengthening their sustainability credentials for ongoing NHS tender participation.

Read Full Case Study

This carbon reduction plan example UK demonstrates how organisations in the healthcare sector approach PPN 06/21 compliance. Whether you are an NHS supplier, construction firm, or manufacturer, the core requirements remain consistent: baseline emissions, current reporting, reduction targets, and signed management declaration.

For a non-NHS example, see how Moventi used a compliant Carbon Reduction Plan to win UK public sector tenders — a useful reference for SMEs bidding outside healthcare procurement.

Common PPN 06/21 Mistakes to Avoid

The following errors frequently result in non-compliance and tender disqualification:

• Excluding Scope 3 emissions: PPN 006 requires reporting of relevant Scope 3 categories.
• Using non-GHG Protocol calculation methods: Only the GHG Protocol Corporate Standard is accepted.
• Omitting baseline year data: A complete baseline is mandatory for measuring progress.
• Failing to update annually: CRPs must reflect current emissions and reduction progress.
• Submitting unsigned declarations: Director-level signature is a formal requirement.

Carbon Reduction Plans by Sector

CRP requirements apply across industries, with sector-specific considerations for Scope 3 emissions:

• Healthcare and NHS Suppliers: Medical equipment suppliers must account for supply chain emissions and product distribution across NHS facilities. Key Scope 3 categories include purchased goods and upstream transportation, with a focus on medical device manufacturing impacts.
• Construction and Infrastructure: Construction firms must report emissions from materials, equipment use, and subcontractor activities. Key Scope 3 categories include cement and steel procurement and downstream construction, with a focus on embodied carbon in materials.
• Manufacturing: Manufacturers must quantify process emissions, energy use, and supply chain impacts for raw materials. Key Scope 3 categories include raw materials and product transportation, with a focus on production process efficiency.
• Professional Services: Service providers must account for office operations, business travel, and employee commuting patterns. Key Scope 3 categories include business travel and employee commuting, with a focus on office energy and transport.

Frequently Asked Questions