Most UK PLCs do not have a SECR problem. They have a data problem that shows up once a year in the annual report.
Streamlined Energy and Carbon Reporting (SECR) sets the legal minimum for quoted companies: global Scope 1 and 2 emissions, energy use, an intensity ratio and energy efficiency actions. But investors, customers and lenders now expect far more. They ask for Scope 3, transition plans, science-based targets and disclosures aligned with ISSB standards.
That leaves sustainability and compliance leaders with a buying decision. Do you need dedicated SECR reporting support, a broader carbon accounting platform, or both? This guide sets out what each option does, where each one genuinely wins, and how to choose.
What UK PLCs must report, and what is changing?
SECR remains the statutory baseline. Every UK quoted company must disclose in its directors’ report:
- Global Scope 1 and Scope 2 greenhouse gas emissions
- Underlying global energy use
- At least one intensity ratio, such as tonnes CO2e per £m revenue
- The methodology used
- The energy efficiency actions taken in the year
Scope 3 is not mandatory under SECR. That is the gap the rest of the regulatory landscape is now closing.
The UK government published the final UK Sustainability Reporting Standards (UK SRS S1 and S2) in February 2026, based on the ISSB’s IFRS S1 and S2. On 30 September 2026, the FCA confirmed in Policy Statement PS26/19 that listed companies must report against UK SRS on a comply or explain basis. The new rules replace the TCFD-aligned Listing Rules and apply to accounting periods starting on or after 1 January 2027, with first reports in 2028.
There is transitional relief: one year for Scope 3 emissions and two years for the wider, non-climate UK SRS S1 disclosures. That means Scope 3 disclosure is expected on FY2028 data for most listed companies. Comply or explain is not a free pass either. If you do not disclose, you must explain why, in public, to the same investors who read your SECR figures.
SECR software vs carbon accounting platforms: what each does
Dedicated SECR software and reporting support is built around one deliverable: an accurate, compliant SECR disclosure. It typically collects utility, fuel and fleet data, applies the current DEFRA emission factors, calculates intensity ratios and produces wording ready for the directors’ report. The best options pair the software with a consultant who checks the figures and the narrative.
It wins on focus. Setup is quick, cost is low, and there is little for your team to learn. It loses when you need anything beyond Scope 1 and 2. Most SECR tools were never designed for supplier data, product footprints or target tracking.
Carbon accounting platforms treat emissions as a continuous dataset rather than an annual report. They cover all three scopes, track progress against targets, and feed several frameworks from one source: SECR, UK SRS, CDP, Science Based Targets and customer questionnaires.
They win on breadth. They lose on effort if the platform is software only. Choosing Scope 3 methods, cleaning supplier data and defending assumptions to an assurer still need expert judgement. A powerful platform without that support can leave your team doing consultancy work in-house.
Side-by-side comparison
| Criteria | SECR software and support | Software-only carbon accounting | Platform plus in-house experts |
|---|---|---|---|
| Scope coverage | Scope 1 and 2 | Scope 1, 2 and 3 | Scope 1, 2 and 3 |
| Frameworks served | SECR | SECR, UK SRS, CDP, SBTi | SECR, UK SRS, ESOS, SBTi, CSRD, PPN 006 |
| Expert judgement | Varies by provider | Your own team | Named consultant |
| Assurance readiness | Annual figures only | Depends on your processes | Full audit trail plus expert review |
| Setup effort | Low | Medium to high | Low to medium |
| Typical cost | Lowest | Medium | Medium, often a fixed monthly fee |
| Best for | Simple estates with no Scope 3 pressure | Experienced in-house ESG teams | PLCs preparing for UK SRS with lean teams |
Decision guide: which do you need?
Dedicated SECR support is enough if:
- You have a small number of UK sites and a simple energy profile
- No customer, lender or investor is asking for Scope 3 or targets
- You are comfortable explaining non-disclosure under UK SRS for now
- Your main goal is a clean, on-time directors’ report
To be fair to the simple option: if that describes you, a full carbon accounting platform is overkill. Pay for accurate SECR and revisit the decision in a year.
You need broader carbon accounting if:
- You intend to comply with UK SRS rather than explain, including Scope 3
- You have set, or plan to set, a Science Based Target
- Customers send supplier questionnaires or bid requirements, such as PPN 006 Carbon Reduction Plans for public sector contracts
- You have EU operations that may fall under CSRD
- You run multiple sites, countries or business units and need one consolidated view
For manufacturers, the case is usually stronger. Manufacturing sustainability reporting goes well beyond the energy bill. Purchased materials, logistics and product use often make up most of a manufacturer’s footprint, and customers increasingly ask for product carbon footprints and EPDs. Exporters to the EU also face CBAM data requests. SECR software alone will not answer any of these.
The cost of choosing wrong runs both ways. Buy too little and you rebuild your data a year later. Buy a software-only platform without the expertise to run it and you pay twice: once for the licence, and again for the consultancy you end up needing.
Evaluation checklist for PLC buyers
Take these into supplier calls. Each one separates a reporting tool from a long-term partner.
- Can the same dataset produce SECR, UK SRS S2 and Scope 3 disclosures without re-entering data?
- Which emission factors are used, and how quickly are DEFRA updates applied?
- Who reviews the figures before they go into the annual report, and are they employees or contractors?
- Will we have a named consultant who knows our business?
- What does the audit trail look like when our assurer asks for evidence?
- How many reports have you delivered, and has any failed compliance?
- Is the platform developed in-house, so it can adapt as UK SRS guidance is finalised?
- What is the total cost over three years, including extra sites, users and frameworks?
How Enistic combines compliance, data and expertise
Enistic sits in the third column of the table above. You get one platform and one team, so you never have to choose between SECR accuracy and wider carbon accounting.
- Compliance you can rely on: more than 5,000 reports delivered since 2002, with a 100% compliance record.
- Less data collection: our in-house AI platform cuts the data collection burden by up to 80% across multi-site, multi-user and multi-language estates.
- One dataset, every framework: SECR, UK SRS, ESOS, Science Based Targets, CSRD and PPN 006 all draw on the same Scope 1, 2 and 3 data.
- Experts, not a helpdesk: a named consultant, backed by in-house ESOS Lead Assessors, carbon consultants and auditors. Nothing is outsourced.
- Fewer challenges: an audit rate of 11.7% against an industry average of 33%, and our own work is audited by the Big 4.
- Speed: reports in as little as 24 hours once your data is complete.
- Simple pricing: one monthly payment with no hidden costs, and a 98% client renewal rate.
If your next SECR report is also your first step towards UK SRS, book a free consultation. We will show you exactly what you need now, and what can wait.
Frequently asked questions
What is the difference between SECR software and carbon accounting software? SECR software produces the statutory Scope 1, 2 and energy disclosure for the annual report. Carbon accounting software tracks all three scopes continuously and feeds several frameworks, including UK SRS, SBTi and customer requests.
Do UK PLCs have to report Scope 3? Not under SECR. Under the FCA’s new UK SRS rules, listed companies must disclose Scope 3 or explain why not, with one year of transitional relief on Scope 3.
When do the UK SRS rules apply to listed companies? For accounting periods beginning on or after 1 January 2027, with first reports published in 2028.
Does UK SRS replace SECR? No. SECR remains a Companies Act requirement. UK SRS replaces the FCA’s TCFD-aligned Listing Rules, so most PLCs will report under both.
Is SECR software enough for a manufacturing PLC? Rarely. Most of a manufacturer’s footprint sits in Scope 3, and customers increasingly ask for product-level data. A platform that covers Scope 3 and product footprints is usually the better investment.