Not exactly a sophisticated piece of work, I have to say. It makes the basic error of ignoring the time value of money, equating a Euro spent in year 1 with a Euro saved in year 10. No allowance for cost of capital at all. Assumes
ALL EV charging is done at the night rate cost of 9.5c, including VAT, per kWh!
And that's just off the top of my head having had a quick look; I'm sure there are other dubious methodologies if you drill deeper. Which you can't really, because it doesn't show it's working out in any level of easily accessible detail.
Plus, of course, the SEAI's role is to encourage the use of EVs so they're not exactly unbiased assessors! I've looked at some similar UK studies and the general consensus appears to be that you have to own your EV for a LONG time before its TCO (Total Cost of Ownership) falls below that of an equivalent ICE. Consumer advocate group, Which, who are generally highly regarded for their independence, put it as follows:
"Our pricing research shows that buying an electric car doesn’t necessarily guarantee you’ll save money in the long run. Yes, you’ll pay less for fuel each year, but the high price of purchase makes that all but redundant."
Read more:
https://www.which.co.uk/news/2021/0...ectric-cars-could-push-more-people-to-petrol/ - Which?
moneysupermarket.co.uk came to a similar conclusion, finding that the TCO for petrol vehicles was
less than that for equivalent EVs when looked at over a six year period.
Autoexpress.co.uk put it like this:
"The average total cost of buying a new electric car in 2020 and driving it for just under 14 years - the average lifespan of a car - has been calculated as £52,133. Doing the same with a petrol-powered model would cost £53,625." I'll just point out our that 14 years is a lllllloooooonnnnngggggg payback time for miniscule savings of about 2%.
https://www.autoexpress.co.uk/news/352747/electric-cars-are-cheaper-own-petrol-cars
Obviously, UK and Irish costs are not like for like, particularly the uniquely Irish imposition of VRT, but they're not that hugely dissimilar. I would say the case for EVs having a lower TCO is unproven at best.
It would be interesting to see some detailed and robust Irish studies on TCO for EVs and ICE.