Construction fleet emissions: follow the litre

What construction fleet emissions reporting tools are

Construction fleet emissions reporting tools are the records and systems that turn litres of fuel into a Scope 1 figure, in four types: fuel-card or fuel-management data, machine and vehicle telematics, carbon-accounting platforms that ingest those feeds, and spreadsheets with an audit trail. Each leaves a gap that another has to cover.

Fuel-card and fuel-management data record purchases and, where a site tank is metered, dispensing: litres, fuel type, date and the asset or card charged. They cannot show who burned the fuel. EPA's mobile-combustion guidance names card records, delivery records and invoices as the usual sources of fuel quantity, and notes that stock changes and spills separate purchase from combustion. US EPA Center for Corporate Climate Leadership: Direct Emissions from Mobile Combustion Sources (December 2023)

Machine and vehicle telematics record what a unit reports: location, engine hours and, where the machine supplies it, fuel use and idle time. They cannot report a field the unit does not provide, and hours alone are an input to an estimate, not a litre count.

Carbon-accounting platforms apply a boundary and emission factors to those feeds and keep the result. They cannot repair incomplete data: the GHG Protocol asks companies to test data gathered for other purposes for completeness and consistency with the source category and factors used. GHG Protocol: Corporate Accounting and Reporting Standard (revised edition)

Spreadsheets with an audit trail can serve a small fleet if each figure keeps its source, author and date, which is what the GHG Protocol means by transparency. They reconcile nothing unless someone builds that in. GHG Protocol: Corporate Accounting and Reporting Standard (revised edition)

We name no tool and rank none.

Two fleets, one Scope 1 line, three definitions

The GHG Protocol Corporate Standard places emissions from combustion in owned or controlled vehicles in Scope 1 and requires Scopes 1 and 2 to be reported separately at a minimum. Its sector tables treat on-site machinery — quarry operations, mining equipment, on-site transport — as mobile combustion alongside road vehicles, so an excavator and a van land on the same line of the inventory. GHG Protocol: Corporate Accounting and Reporting Standard (revised edition)

They do not land on the same line anywhere else. The Greater London Authority's NRMM guide defines non-road mobile machinery as any mobile machine or vehicle not solely intended for carrying passengers or goods on the road, and counts road-registered telehandlers and dumpers, generators and compressors among it. UK SECR's transport wording for unquoted companies turns instead on whether a vehicle is a road-going vehicle — one that needs a vehicle licence under the Vehicle Excise and Registration Act 1994, or is exempt under it. The same telehandler can sit on different sides of each line. Greater London Authority: NRMM Practical Guide, version 6 (January 2024); legislation.gov.uk: SI 2008/410, Schedule 7 Part 7A (unquoted companies)

So the evaluation starts at the asset register, not the dashboard. Ask the vendor to hold, against each asset: owned, leased or hired, and on what terms; road-going or not; engine power and emission stage; and the fuel it actually runs on. A single on-road/off-road flag cannot answer all three regimes at once.

Where the litre was recorded decides what the number means

Reconcile the sources rather than choosing one

The GHG Protocol expects most small and medium-sized companies, and many larger ones, to calculate Scope 1 from purchased quantities of commercial fuels and published emission factors, and it asks companies to check activity data generated for purposes other than a GHG inventory — which is exactly what fuel-card statements and telematics exports are — for completeness and for consistency with the source category and the emission factors used. GHG Protocol: Corporate Accounting and Reporting Standard (revised edition)

In practice that means reconciling, not picking: purchases against deliveries, deliveries against dispensed litres, and dispensed litres against telematics where it exists. The unreconciled remainder is the finding, and the software should show it rather than allocate it away. The UK government makes the same distinction between activity data and spend: its conversion factors are built for quantities such as volume of fuel used, and it describes spend-based methods as an option where activity data is insufficient, provided the method is reported. DESNZ: Greenhouse gas reporting, conversion factors 2026

Telematics or manual fuel logs: which gives the better litre

Neither is better in general. A manual fuel log gives the better litre where fuel is dispensed to a named asset and the log is complete; telematics gives the better litre where the unit reports fuel used per machine and you have shown which assets report it. Where a unit reports only engine hours, the dispensing record is the stronger figure and the hours serve as a cross-check.

The guidance supports starting from fuel quantities rather than estimates. The US EPA calls fuel receipts and purchase or delivery records the preferred route to fuel combusted, ranks an estimate from fuel-economy factors below directly obtained fuel use, and ranks a cost-based estimate lowest. The UK methodology paper, writing about road vehicles, calls fuel in litres the more accurate route than distance. US EPA Center for Corporate Climate Leadership: Direct Emissions from Mobile Combustion Sources (December 2023); DESNZ: 2026 conversion factors methodology paper

Each method has a typical failure point to test: a manual log loses litres to missed entries, a wrong asset or a shared bowser, and telematics loses them to machines with no unit, units that report hours but not fuel, and readings never compared with a dispensed litre.

Reconcile rather than choose. Compare purchases, adjusted for opening and closing stock, with dispensed litres; compare each machine's dispensed litres with its telematics fuel burn, or with hours multiplied by a documented rate; and compare the year's total with the last, since the GHG Protocol suggests investigating year-to-year changes above 10 percent. Record the unmatched remainder and who closed it, and confirm the method with your auditor. US EPA Center for Corporate Climate Leadership: Direct Emissions from Mobile Combustion Sources (December 2023); GHG Protocol: Corporate Accounting and Reporting Standard (revised edition)

Four ways a fleet figure goes wrong

Fuel bought on your card, burned in someone else's machine. Scope 1 follows the source that burns the fuel, not the account that pays for it. Where a subcontractor's plant is filled from your bowser or on your card, decide — and record — whether that combustion sits inside your boundary, whether the fuel is recharged, and how it leaves your total if it does not. The NRMM guide gives the principal contractor overarching responsibility for NRMM compliance on site, sub-contractors' machinery included; that is an air-quality control, not a carbon boundary, and it should not be read as one. GHG Protocol: Corporate Accounting and Reporting Standard (revised edition); Greater London Authority: NRMM Practical Guide, version 6 (January 2024)

Hired plant. The GHG Protocol applies your chosen consolidation approach to leased assets: under operational control a lessee accounts for the leased assets it operates, and under equity share or financial control only those treated as finance leases. The revised ESRS, adopted by the Commission on 3 July 2026 and published as Delegated Regulation (EU) 2026/1563, are more direct: a lessee reports the impacts connected with using a leased asset in its own operations during the lease period, and that rule takes precedence over the climate standard's emissions disclosure. Neither text settles a wet-hired machine that arrives with the hire company's operator and fuel. Make the vendor show where that decision is recorded against each hire. GHG Protocol: Corporate Accounting and Reporting Standard (revised edition); European Commission: C(2026) 5010 annexes (revised ESRS as adopted); EUR-Lex: Commission Delegated Regulation (EU) 2026/1563 (revised ESRS), OJ L, 21 September 2026

Blends and HVO. The emission factor has to follow what was actually in the tank. The UK government's 2026 methodology lists 100% mineral diesel as a fuel in its own right, calculates factors for diesel as supplied at public and commercial refuelling stations by factoring in the well-to-tank component of biodiesel's share of UK supply, and publishes separate factors for biofuels, HVO among them. For HVO, the direct emissions in the UK dataset are methane and nitrous oxide only, and the CO2 from combustion is given as an outside-of-scopes figure. Methyl-ester biodiesel (FAME) is a different case: since April 2020 the direct figures in the methodology's biofuel table for methyl-ester biodiesel, and for off-road biodiesel, also carry a small fossil CO2 component, so a FAME blend should not be treated as if it were HVO. The GHG Protocol requires CO2 from burning biomass to be reported separately from Scope 1, and the revised ESRS E1 requires biogenic CO2 to be disclosed separately while keeping methane and nitrous oxide in the scopes. Software that records HVO as zero has dropped both the in-scope methane and nitrous oxide and the outside-of-scopes CO2. For a blend, the split between the mineral and renewable parts has to come from the supplier's documentation — and because the methodology notes that net emissions from biofuels vary significantly with feedstock and production pathway, and recommends more specific figures where available, the supplier's feedstock evidence matters for the upstream figure too. DESNZ: 2026 conversion factors methodology paper; GHG Protocol: Corporate Accounting and Reporting Standard (revised edition); European Commission: C(2026) 5010 annexes (revised ESRS as adopted); EUR-Lex: Commission Delegated Regulation (EU) 2026/1563 (revised ESRS), OJ L, 21 September 2026

Emission factor versions. UK conversion factors are republished every year with a methodology paper and a major-changes report. The 2026 set was published on 11 June 2026, and in July 2026 the flat file intended for automatic processing was republished to correct values reported as zero instead of left blank; the full set was not revised. The corrected values relate to well-to-tank emissions from certain hybrid, CNG and LPG cars, and to hotel stays in certain countries, so no direct factor for a vehicle or plant fuel was among them; even so, “the 2026 factor” can mean two files, and each result should record which one it came from. The methodology also notes that methane and nitrous oxide factors for gas oil differ by use, non-road mobile machinery included, and that the published figures for fuels are an activity-weighted average of those use-specific factors — so applying them to plant is an approximation worth recording as one. The GHG Protocol treats a change in methodology, or an improvement in the accuracy of factors or data, that significantly affects the base year as a reason to recalculate it, and a change in a factor or in activity data that reflects a real change in emissions, such as a change of fuel, as not a reason. Software has to tell the two apart. Switching to HVO is a real change. A new annual factor set can contain either kind: a correction or a method change is a reason to recalculate if it is significant, while a factor that moved because the fuel supplied changed is not — and the methodology itself notes that the biofuel supply behind the UK figures is likely to vary from year to year. Record which it is for each factor that moved. DESNZ: Greenhouse gas reporting, conversion factors 2026; DESNZ: 2026 conversion factors methodology paper; GHG Protocol: Corporate Accounting and Reporting Standard (revised edition)

Off-highway equipment: engine hours, idling and fuel type

For off-highway (non-road) equipment, litres per machine remain the preferred basis; engine hours and idle share support them, because distance means little for an excavator or generator. Hours matter when fuel was not logged per machine. Idle share matters because a machine can run for hours doing little work, so one burn rate across all hours can mislead.

The IPCC guidelines for national inventories describe estimating off-road emissions from annual hours of use, rated power, load factor and a power-based factor when fuel data are missing, and say such inputs may need assumptions. IPCC: 2006 Guidelines for National Greenhouse Gas Inventories, Volume 2, Chapter 3 (Mobile Combustion) A 2007 EPA report says fuel burned at idle varies by equipment type and that detailed idling data for non-road equipment are scarce. US EPA: Cleaner Diesels, Low Cost Ways to Reduce Emissions from Construction Equipment (March 2007, archived)

Fuel type sets the factor, so record whether a machine ran on gas oil, road diesel, HVO or a blend; one client tool we read lists red diesel and biodiesel separately. National Highways: Carbon Tool Guidance, version 2.7 (September 2025)

US EPA Tier 4 and EU Stage V are engine standards, not fuel records. EPA says manufacturers meet Tier 4 with new engines and advanced controls. US EPA: Regulations for Emissions from Heavy Equipment with Compression-Ignition (Diesel) Engines Regulation (EU) 2016/1628 sets Stage V limits for carbon monoxide, hydrocarbons, nitrogen oxides and particulates, with no CO2 limit; manufacturers pass a type-approval CO2 value to the end user, which is a test result, not a site measurement. EUR-Lex: Regulation (EU) 2016/1628 (emission limits and type-approval for engines in non-road mobile machinery) Keep the stage in the asset register.

Factor sets differ too. The EPA Hub gives one CO2 factor per gallon of diesel plus separate methane and nitrous oxide rows for construction and mining equipment; the UK set averages those two gases across uses. US EPA: Emission Factors for Greenhouse Gas Inventories (GHG Emission Factors Hub, 2025 edition, modified 15 January 2025); DESNZ: 2026 conversion factors methodology paper

What each regime asks of the fleet figure (checked 22 September 2026)

The regulatory detail, and what it means for the software

UK SECR. The requirements sit in Schedule 7 to the Large and Medium-sized Companies and Groups (Accounts and Reports) Regulations 2008: Part 7A, for unquoted companies, was inserted and Part 7, for quoted companies, extended with effect from 1 April 2019. Quoted companies report emissions from the combustion of fuel wherever it occurs and state the share in the UK and offshore area. Unquoted companies that exceed at least two of the size tests — applied over consecutive years, and on a group basis for parents — report UK emissions from the combustion of gas and from fuel for the purposes of transport, which the regulations define by reference to aircraft, road-going vehicles, trains and vessels. Read literally, diesel or HVO burned in a machine that is not a road-going vehicle is neither, so the unquoted-company minimum does not name diesel or HVO site plant. Plant that burns LPG or natural gas is different: the regulations define gas to include methane, propane and butane, so that fuel falls under the combustion of gas. Whether to include diesel and HVO plant anyway is a decision for whoever signs the directors' report; the software's job is to show which assets were counted under which heading. Both parts require the methodology to be stated, and both allow information that is not practical to obtain to be left out if the report says what and why — the provision a gap in subcontractor fuel data will end up relying on. legislation.gov.uk: SI 2008/410, Schedule 7 Part 7 (quoted companies); legislation.gov.uk: SI 2008/410, Schedule 7 Part 7A (unquoted companies)

London NRMM. The Low Emission Zone covers machines of 37–560 kW on construction and demolition sites across Greater London. The GLA guide asks local planning authorities to apply it through a planning condition and expects every site to comply whether or not a condition applies. It sets Stage IV as the minimum across Greater London from 1 January 2025, with generators remaining at Stage V; Stage V everywhere from 1 January 2030; and an aim of zero emissions from NRMM by 1 January 2040. The Cleaner Construction for London team, which sits in the Regulatory Services Partnership hosted by Merton Council and delivers the scheme's auditing on behalf of the GLA, stated in a summary dated 4 November 2025 that the London-wide Stage IV minimum took effect on 1 January 2025. The City of London's page, updated 16 September 2026, states Stage IV as the current requirement in the Square Mile; the Square Mile lies inside the Central Activities Zone, where the guide shows Stage IV already applied before 2025, so that page does not by itself confirm the London-wide step. Every in-scope machine, sub-contractors' included, goes on the GLA register, which the guide describes as a live record of machinery on site during the development. Nothing in the guide asks for fuel quantities, so treat the register as an asset list for reconciling plant fuel, not as a carbon record. Greater London Authority: NRMM Practical Guide, version 6 (January 2024); Cleaner Construction for London (Merton Council, on behalf of the GLA): NRMM emissions savings estimates, 4 November 2025; City of London Corporation: Non-Road Mobile Machinery

EU CSRD and ESRS E1. Directive (EU) 2025/794 moved the second wave of CSRD reporting to financial years starting on or after 1 January 2027. Directive (EU) 2026/470, published on 26 February 2026, then limited that wave to undertakings — and parent undertakings of groups, on a consolidated basis — that exceed both €450 million net turnover and an average of 1,000 employees. For financial years 2024 to 2026 the original first wave continues, and Member States may exempt first-wave undertakings that do not exceed €450 million net turnover or 1,000 employees for 2025 and 2026. The Commission states that the directive entered into force on 18 March 2026 and must be transposed by 19 March 2027. On 3 July 2026 the Commission adopted revised ESRS and sent them to the Parliament and Council for scrutiny. They were published in the Official Journal on 21 September 2026 as Delegated Regulation (EU) 2026/1563, which enters into force on 10 November 2026 and applies to financial years beginning on or after 1 January 2027. For financial years beginning in 2026, an undertaking already in scope may apply the previous standards, the revised ones, or the previous ones with specified reliefs, provided it states which version it applies. In the published text, disclosure requirement E1-8 still requires gross Scope 1, biogenic CO2 is disclosed separately, the default boundary follows financial control, and emissions may be broken down by source type, mobile combustion included. EUR-Lex: Directive (EU) 2025/794 (stop-the-clock); EUR-Lex: Directive (EU) 2026/470 (Omnibus I); European Commission: corporate sustainability reporting; European Commission: revised ESRS adopted, 3 July 2026; European Commission: C(2026) 5010, Delegated Regulation as adopted on 3 July 2026; European Commission: C(2026) 5010 annexes (revised ESRS as adopted); EUR-Lex: Commission Delegated Regulation (EU) 2026/1563 (revised ESRS), OJ L, 21 September 2026

United States. The SEC stayed its March 2024 climate disclosure rules on 4 April 2024, voted to end its defence of them on 27 March 2025, and saw the Eighth Circuit hold the litigation in abeyance on 12 September 2025. On 29 May 2026 it proposed rescinding the rules entirely; its rulemaking page lists the rescission as a proposed rule with comments due by 3 August 2026, and we found no final action by 22 September 2026. The US obligation with a current date that we found is California's: SB 253 requires US entities with annual revenue over $1 billion that do business in California to disclose Scope 1, 2 and 3 emissions annually, and CARB says it is updating its proposal to defer the first Scope 1 and 2 deadline from 10 August 2026 to 10 November 2026, subject to approval of its initial regulation. Fleet and plant fuel are Scope 1 in that report. US SEC: proposed rescission of the climate disclosure rules (press release 2026-49); US SEC: rulemaking file S7-2026-19; California Air Resources Board: corporate GHG reporting programme (SB 253)

Reporting fleet emissions in a project bid or client scorecard

A bid or client scorecard usually asks for the company's Scope 1 and 2 footprint, or fuel and energy quantities for the contract, with the boundary, period and factor source stated. The two published requirements we read ask for that, not for telematics output, and a bid can claim only what the records behind it support: litres, boundary, factor set and period.

UK central government bodies are asked to require a Carbon Reduction Plan for contracts above an estimated £5 million a year including VAT, where relevant and proportionate. The plan reports Scope 1 and 2 and five Scope 3 categories in CO2e using UK government conversion factors, states a financial control, operational control or equity-share boundary, is signed off by a director or equivalent and is published; the technical standard says an audit is not required. GOV.UK: PPN 006, Taking account of Carbon Reduction Plans in the procurement of major government contracts (updated February 2025); GOV.UK: PPN 006, Technical standard for completion of Carbon Reduction Plans

National Highways asks suppliers to report contract carbon through its Carbon Tool, monthly for Major Projects and quarterly for Operations and DBFOs. Its version 2.7 guidance (September 2025) asks for fuels used in vehicles and plant on site, entered by fuel type in litres from auditable sources such as delivery notes and invoices, and it includes well-to-tank emissions, so its total is not a Scope 1 figure. National Highways: Carbon emissions calculation tool (supplier page); National Highways: Carbon Tool Guidance, version 2.7 (September 2025)

We found no fleet-specific requirement in a US or EU public bid, so read the tender documents, confirm with your auditor or the client what your boundary may state, and do not present a saving without its baseline, factor version and records. Nothing here is legal advice.

The demonstration: one month of fuel cards against one machine

Questions that separate candidates