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To demonstrate delivery of the cost and environmental savings of your EnergyMAP, you must identify what are your current and historic transport energy costs and their likely environmental impacts.

Step 6: Develop and overview total energy consumption
Collate invoices for volumes purchased, by month (period), by vehicle
Compare prices paid to budget and expectation
Correlate usage in litres to total productive work
Check for consistency, cross check odometers with sample vehicles

Step 7: Identify key factors that influence energy consumption
List all vehicles by registration number, make, model, year, odometer reading
List all drivers by name, licence class and years of service
Collate vehicle odometer readings for period (e.g. Jan-Dec)
Correlate drivers with vehicles (where possible)
Survey each vehicle (see separate vehicle survey)

Step 8: Survey energy use & identify significant energy users
Calculate litres used per 100Km - for each fuel
Calculate Tonne, Pallet, Case, Passenger, Job per Km per Litre
Identify, best, worst, average and opinion leader drivers & vehicles
Survey i.e. go out with, each of the above drivers
Survey sites

Step 9: Identify energy saving opportunities
Vehicle survey
Collate and report on wastages identified

In a nutshell

Do you know how much diesel and petrol your company uses each year in litres? Oil prices are higher now than some years ago, but they have not yet returned to their historic norms, increases in price can be expected in the future.

Understanding how much fuel your company uses and why, is fundamental to planning your approach to change.

Knowing how many vehicles your company owns, what types and capacities, why they were purchased and what their intended purpose was will help you understand the value(s) of transport in your business.

Why does this step matter?

What gets measured gets managed. In this instance, many companies’ report fuel cost as a total figure in monetary terms, omitting to report how many litres of fuel were purchased or how efficiently it was used in terms of litres per 100Km, in comparison to previous years.

Fuel prices are beyond your control, usage in terms of litres and efficiency in terms of miles driven can be influenced and reduced by you.

An understanding of your fleet profile and baseline fuel usage will enable comparisons with other fleets, a process known as benchmarking.

What to do and how to do it?

If your company is using a fleet management software (FMS) package, it should contain all the data you need. But before starting work, check a sample of your vehicle odometer readings, by going out to vehicles and comparing the reading with the record on the software.

Without an FMS or similar package, gather fuel invoices; collate usage in litres by individual vehicle and driver if possible, by fleet as a whole if not.

Collect and check the mileage figures for your vehicles;

  • All mileage for company owned vans and trucks
  • Business mileage for company or employee owned cars

There are several ways to measure fuel usage and efficiency;

  • Miles per gallon, superseded by Litres / 100Km. Can be useful for presentation purposes
  • Litres per 100Km, you will have seen this measure in vehicles sales brochures and it’s the European standard way of expressing fuel usage for vehicle.
  • Energy Efficiency. In business getting from A to B is good, but getting more products, jobs, passengers from A to B, more profitably is better. Energy efficiency takes into account how much useful work was done for the amount of fuel used.

Tip: If your company uses a fuel card, ask the supplier for all the data in electronic format.

Tip: Seek out electronic records of odometer readings from service histories, expense reports etc...


The above actions can be carried out by your energy manager and independently assessed by 3rd party organisations specialising in commercial vehicle fleet fuel efficiency.

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