Carbon Accounting for Logistics Companies in the UK

Logistics companies face unique carbon accounting challenges. Your operations span multiple emission sources - from diesel-powered HGVs and vans to air freight and warehouse energy consumption. Understanding how to measure and report these emissions accurately is essential for SECR compliance and stakeholder trust.

Understanding Logistics Emissions - Scope 1 and Scope 3

Logistics operations generate emissions across multiple scopes. Scope 1 emissions from your owned and operated vehicles typically represent the largest portion of your carbon footprint, especially if you operate a significant fleet.

However, Scope 3 emissions - particularly from subcontracted transport and third-party logistics providers - often rival or exceed your direct emissions. Many logistics companies underestimate Scope 3 because the responsibility feels distributed across supply chain partners.

Why Scope 1 Dominates Logistics Carbon

Your company fleet consumes thousands of liters of diesel annually. Each liter burned emits approximately 2.68 kg of CO2 equivalent. For a mid-sized logistics operator with 50 HGVs running 100,000 miles per year, this translates to roughly 3,500 tonnes of CO2e annually from vehicles alone.

The Hidden Scale of Scope 3

Subcontracted haulage and freight forwarding represent significant Scope 3 emissions. If you outsource 30% of your transport to third parties, that 30% still belongs in your carbon footprint under the GHG Protocol standards. Many companies miss this entirely, leading to incomplete emissions baselines and failed audits.

Key Emission Sources in Logistics Operations

Effective carbon accounting starts with identifying every emission source in your operations.

Heavy Goods Vehicles (HGVs)

HGVs are your largest direct emitters. Articulated lorries (artics) typically emit 900-1,100g of CO2 per kilometer depending on load and driving conditions. Track fuel consumption meticulously - this is your most reliable data source for emissions calculation.

Van Fleet and Last-Mile Delivery

Vans emit less per vehicle but operate more frequently across urban routes. A standard delivery van produces 200-250g CO2/km. When aggregated across dozens of vehicles, van emissions become substantial. Implement telematics systems to capture mileage data automatically.

Air Freight Handling

If your logistics operation includes air freight consolidation or handling, aviation emissions carry a radiative forcing multiplier. The GHG Protocol and most UK reporting standards apply a 2x or 3x uplift to aviation fuel emissions to account for non-CO2 warming effects at altitude.

Warehouse Energy Consumption

Warehousing energy - electricity for lighting, heating, cooling, and forklift charging - typically falls under Scope 2 (purchased electricity) or Scope 1 (if you use on-site diesel generators). Modern warehouses with climate control can consume 50-100 kWh per 100 square meters annually.

Subcontracted Transport

Document contracts with haulage partners and request fuel consumption data or emissions certifications. If data is unavailable, use industry averages - the Department for Environment, Food and Rural Affairs (DEFRA) publishes emissions factors for road haulage by vehicle type.

SECR Compliance Requirements for Logistics

The Streamlined Energy and Carbon Reporting (SECR) standard applies to UK companies with 250+ employees or annual turnover exceeding GBP 50 million. For logistics operators, SECR introduces specific requirements around fuel intensity reporting.

Fuel Intensity Ratio Reporting

SECR mandates that you report your fuel intensity ratio - typically expressed as tonnes of CO2e per tonne-km (t CO2e/t-km) or per GBP revenue. This metric benchmarks your efficiency against industry peers and tracks improvement over time.

Calculate your ratio by dividing total Scope 1 emissions from transport by either total tonnes moved or total revenue. A logistics company moving 500,000 tonnes with 5,000 tonnes CO2e achieves a 0.01 t CO2e/t-km ratio.

Five-Year Baseline Requirement

SECR requires you to establish a baseline year and compare current performance against it. Most logistics companies use their first reporting year as baseline. Track year-on-year improvement trajectories - investors increasingly scrutinize these trends.

Transitioning to Electric Fleets and Hydrogen - Accounting for the Shift

Fleet electrification is no longer optional for UK logistics companies. Battery electric vehicles (BEVs) and hydrogen fuel cell vehicles (HFCVs) are becoming mainstream, but accounting for the transition requires careful methodology.

Measuring BEV Emissions

Electric vehicles produce zero direct tailpipe emissions (Scope 1 = 0), but you must account for Scope 2 emissions from grid electricity. The current UK grid emissions factor is approximately 0.193 kg CO2e per kWh (2026 data). A typical electric HGV consuming 1.5 kWh/km produces roughly 290g CO2e/km - roughly 70% lower than diesel equivalents.

Hydrogen Vehicle Accounting

Hydrogen vehicles emit only water vapor from the tailpipe, but you must trace the hydrogen production method. Grey hydrogen (from natural gas) carries significant embedded emissions - approximately 10 kg CO2e per kg hydrogen. Green hydrogen (from electrolysis using renewable power) approaches zero emissions.

Managing Mixed Fleet Transitions

During transition periods, calculate separate emissions profiles for diesel, electric, and hydrogen vehicles. Report blended fleet intensity to show improvement, but maintain granular data by powertrain type for board-level strategy discussions.

FAQ

What is the difference between Scope 1 and Scope 3 emissions in logistics?

Scope 1 covers emissions from vehicles and equipment your company directly owns and operates. Scope 3 covers emissions from outsourced transport, subcontracted haulage, and third-party logistics providers. Both must be included in your carbon footprint and SECR reporting.

How do I calculate emissions from subcontracted transport if I don't have fuel data?

Use industry-standard emissions factors published by DEFRA. These factors apply typical CO2e per tonne-km based on vehicle type. Alternatively, request fuel consumption or CO2 certification data from your haulage partners as part of supplier contracts.

When should I transition my fleet to electric or hydrogen vehicles for SECR compliance?

SECR itself doesn't mandate fleet electrification by a specific date. However, the UK government's Zero Emission Vehicle (ZEV) mandate requires 80% of new HGV sales to be zero-emission by 2040. Plan your transition now to avoid cost overruns and ensure realistic carbon reduction targets.

Is warehouse energy included in SECR reporting?

Yes. Warehouse electricity falls under Scope 2 (purchased electricity) and must be reported. On-site diesel generators fall under Scope 1. Include all energy consumption in your intensity ratio calculations.

What data systems should I implement to support carbon accounting?

Implement telematics systems in all vehicles to capture mileage automatically. Use fuel management systems to track diesel, electric, and hydrogen consumption by vehicle. Integrate warehouse energy monitoring (sub-meters by facility). Ensure monthly data feeds to your carbon accounting platform for real-time reporting.

Conclusion

Carbon accounting for UK logistics companies requires disciplined data collection across Scope 1 vehicles, Scope 3 subcontracted transport, and warehouse operations. SECR compliance demands transparency around fuel intensity ratios and year-on-year improvement tracking.

Start by establishing a clear emissions baseline. Implement automated data capture systems - telematics for vehicles, smart meters for warehouses. Include Scope 3 emissions from subcontractors in your calculations, even if the data feels incomplete initially.

As you transition to electric and hydrogen fleets, your emissions will decline substantially, improving your SECR intensity ratio and strengthening stakeholder confidence. Platforms like Greenio streamline this complexity, automating emissions calculations and generating SECR-ready reports.

For a practical guide to calculating your Scope 1 emissions, see How to Calculate Scope 1 Emissions. Learn more about SECR compliance deadlines and supply chain emissions reporting.