Carbon Reporting UK
Understanding Your Obligations and How to Report
UK Carbon Reporting Landscape 2026
Major Frameworks
Different reporting requirements for different company types
Large Company Coverage
Estimated percentage of large UK companies affected
UK SRS Mandatory
Proposed start date for UK Sustainability Reporting Standards
The Current Situation
UK carbon reporting has evolved from simple energy disclosure to comprehensive sustainability frameworks. Companies now face multiple overlapping requirements, each with different scopes, metrics, and deadlines. The key is understanding which apply to your organisation and how they connect.
Which Carbon Reporting Framework Applies to You?
Quick Assessment Tool
Step 1: Company Size & Type
✅ Large Company (SECR applies if 2+ criteria):
- • Turnover: £36 million+
- • Balance sheet: £18 million+
- • Employees: 250+
📊 Listed Company:
- • SECR automatically applies
- • TCFD may apply (depends on size)
- • UK SRS proposed from 2027
Step 2: Sector-Specific Requirements
🏭 High Energy Use
- • UK ETS: >20 GWh/year
- • ESOS: Energy qualification
- • Enhanced SECR disclosure
🏦 Financial Services
- • TCFD: Large banks/insurers
- • PRA requirements
- • Financed emissions (PCAF)
🏢 Other Sectors
- • SECR (if large company)
- • TCFD (if premium listed)
- • UK SRS (future)
| Framework | Who Must Comply | What to Report | Deadline | Status |
|---|---|---|---|---|
| SECR Streamlined Energy & Carbon | Large companies (2+ size criteria) + all quoted companies | Energy use, Scope 1&2 emissions, intensity ratio | Annual report deadline | Mandatory |
| TCFD Task Force on Climate Disclosures | Premium listed companies >£500m market cap + regulated financial | Governance, strategy, risk management, metrics & targets | Annual report deadline | Mandatory |
| UK SRS UK Sustainability Reporting Standards | Listed companies (proposed 2027) + large private companies (TBC) | Climate (S2) + general sustainability (S1), Scope 3 emissions | Annual report deadline | Proposed 2027 |
| UK ETS Emissions Trading System | Power generation >20MW, manufacturing >20GWh energy use | Verified emissions, allowance surrender, monitoring plan | 31 March (report), 30 April (surrender) | Mandatory |
| ESOS Energy Savings Opportunity Scheme | Large undertakings meeting energy consumption criteria | Energy audits, efficiency opportunities, board oversight | 5 December 2026 (Phase 3) | Mandatory |
| CDP Carbon Disclosure Project | Companies invited by CDP (voluntary response) | Comprehensive climate questionnaire: governance to metrics | July annually | Voluntary |
| SBTi Science Based Targets initiative | Companies making net-zero commitments (voluntary) | Science-aligned emissions reduction targets and progress | Annual progress reporting | Voluntary |
How the Frameworks Connect
Data Flows & Synergies
Smart companies build their carbon reporting architecture once and use it for multiple frameworks.
📊 Foundation Data
- • Energy consumption (kWh, kWh/£)
- • Scope 1&2 emissions (tCO2e)
- • Activity data and conversion factors
- • Business metrics for intensity ratios
Used by: SECR, UK ETS, ESOS baseline
🔍 Enhanced Analytics
- • Scope 3 value chain emissions
- • Climate risk assessments
- • Scenario analysis and modelling
- • Reduction target pathways
Used by: TCFD, UK SRS, CDP, SBTi
🎯 Strategic Integration
- • Net-zero transition planning
- • Climate governance structures
- • Financial impact quantification
- • Stakeholder engagement strategy
Drives: Business strategy, investment decisions
Benefits of Integrated Approach
Efficiency Gains
- • Single data collection system
- • Automated report generation
- • Consistent methodology and boundaries
- • Reduced audit and verification costs
Strategic Value
- • Coherent narrative across disclosures
- • Enhanced credibility with stakeholders
- • Better business decision-making
- • Future-proofed for new requirements
Getting Started with Carbon Reporting
For First-Time Reporters
Determine Obligations
Use our assessment tool above to identify which frameworks apply to your business
Establish Boundaries
Define organisational and operational boundaries using equity share or control approach
Collect Baseline Data
Gather energy bills, fuel receipts, travel data for Scope 1&2 calculation
Calculate & Report
Apply DEFRA conversion factors, prepare disclosures, consider third-party verification
🚨 Common First-Year Mistakes
Data Quality Issues
- • Using wrong version of DEFRA conversion factors
- • Mixing calendar and financial year data
- • Double-counting energy consumption
- • Missing significant emissions sources
Methodology Errors
- • Inconsistent boundary definitions
- • Wrong location-based vs market-based factors
- • Inappropriate intensity metrics
- • Inadequate quality assurance processes
Essential Resources
🔗 Official Guidance
📚 Standards & Methodology
🛠️ Tools & Support
Navigate UK Carbon Reporting with Confidence
Get expert guidance on your carbon reporting obligations and implementation strategy
Framework-Specific Guidance
SECR Reporting
Streamlined Energy and Carbon Reporting requirements and calculation guide
TCFD Disclosure
Task Force on Climate-related Financial Disclosures framework
UK SRS Standards
UK Sustainability Reporting Standards implementation guide
Scope 3 Emissions
Complete value chain emissions measurement and reporting
ESOS Phase 3
Energy Savings Opportunity Scheme compliance guide
CDP Climate
Carbon Disclosure Project questionnaire guidance