Electric Vehicle Calculator Assumptions
Calculations
Guernsey Electricity's vehicle calculator is based on a number of assumptions to reflect an average vehicle and should be used as guidance only. These assumptions include average factors for emissions during production, average lifetime kilometers driven of 150,000 km, and fuel efficiency factors for an average diesel, petrol and battery electric vehicle based on available literature.
These carbon emission figures are based on Guernsey’s electricity mix. This takes into account the diesel-generated electricity from the power station which is used to top-up the 60MW imported renewable electricity.
If you charge a vehicle between 11pm and 5am, the carbon intensity will be lower than the figures displayed on our website. This is because fewer people are demanding electricity from the grid during this period and many electrical items can be powered using 100% imported renewable electricity.
Electric vehicles
Financial running cost based on 6.4km per kWh and carbon cost based on figures published in the independently commissioned Electric Vehicle study which can be found here.
Petrol and diesel vehicles
Price should be researched by user.
Financial running cost based on 10.56km per litre (or 30 miles per gallon) and carbon cost based on figures published in the independently commissioned Electric Vehicle study which can be found here.
Carbon Dioxide Equivalent (CO²e)
Carbon footprints are often measured in CO²e.
This is a way to describe an object or action’s overall contribution to global warming taking into account carbon dioxide (CO²) alongside other greenhouse gases such as methane and nitrous oxide.