EV Annual Fuel Cost and CO2 Savings

An EV with a fuel efficiency of 150Wh/km (or 1.5L/100k or 188mpg) travelling an annual distance of 16,000km will produce the following annual fuel cost savings:

€797 pa with respect to an equivalent Diesel or 80% saving
€1,264 pa with respect to an equivalent Petrol 86% saving

In terms of annual CO₂ savings, the following savings will occur:

523 kg per annum of CO₂ with respect to an equivalent Diesel or 27% saving
683 kg per annum of CO₂ with respect to an equivalent Petrol or 33% saving

The Example below illustrates how these figures are derived. It is assumed that the Consumer is charging 100% of the time at their own Domestic location.

To compare vehicles of your own choosing use SEAIs Performance Calculator provided below.

Please note these figures are illustrative only and final figures will depend on usage, driving style, weather, energy prices and chosen electricity tariffs.

EV Fuel Cost Comparison Example

	Units	BEV	Petrol	Diesel
Combined Fuel Efficiency		150Wh/km (or 1.5L/100km)	7L/100km	5L/100km
Annual Mileage	km	16,000	16,000	16,000
Annual Fuel Requirement	Litres	n/a	1,120	800
Annual Fuel Requirement	kWh	2,400	n/a	n/a
Energy Prices per unit (inclusive of all VAT, Duty, Levy and Carbon Tax)	Euro/Litre	n/a	1.31	1.25
	Euro/kWh¹	Urban 24hr^{2, 3} = 0.1600 Night Saver^{2, 3} = 0.0846	n/a	n/a
Annual Fuel Cost	Euro	Urban 24hr = 384 Night Rate = 203	1,467	1,000
Maximum Annual EV Fuel Cost Savings	Euro	-----	1,264	797
Maximum Annual EV Fuel Cost Savings	%	0	86%	80%

Note:

1. Electricity prices are those price inclusive of VAT @ 13.5%, these prices represent the additional cost on the existing Electricity Bill for the additional energy units, all PSO levies and Standing Charges remain unchanged unless the Consumer is switching Tariffs
2. Note there is no specific EV Tariff yet available for Domestic electricity supplied for an EV, if the Consumer switches Tariff from a 24hr Urban to a Night Saver Tariff, note that the Standing Charge and Day Rate prices of electricity will rise. Although there is no cost for switching Tariffs, there may be a metering cost involved in switching back at a future date.
3. For a comparison of electricity tariffs available please see below links to a number of domestic electricity suppliers:

EV CO₂ Emission Comparison Example

	Units	BEV	Petrol	Diesel
Direct CO₂ Emissions (ie Direct for EV)	g/km	0	130	120
Indirect CO₂ Emissions from Electrical Grid¹	g/kWh	582	n/a	n/a
Annual Electricity	kWh	2,400	n/a	n/a
Annual Mileage	km	16,000	16,000	16,000
Annual Direct CO₂ Emissions	Kg	0	2,080	1,920
Annual Indirect CO₂ Emissions	kg	1,397	n/a	n/a
Annual CO₂ savings	kg	-----	683	523
Annual EV CO₂ Savings	%	0	33%	27%

Notes:

Based on SEAI “Energy in Ireland – 2009 Report” average electricity generation mix, note that this CO₂ intensity will continue to fall as Ireland’s Renewable Electricity content rises from the value of 14.4% in 2009 to 40% by 2020