https://www.tu.no/artikler/elbil-mindre-miljovennlig-enn-diesel/245709
Looks like he's comparing apples and bananas. He expects gasoline / diesel to enters the tank in a "magical way", which certainly is not a case. If the oil is expected to be pumped up from the sea depth, transported ashore, refined (which is very energy-intensive), transported over long distances in tankers and then burned in an ICE car with perhaps 20-30% efficiency, then the calculation becomes different .
It is a bit special that he counts 50% efficiency in the electricity production and then it adds up to the efficiency of an electric motor. It is true that the article writes that electric motors have 90% efficiency. One must also count on approx. 10% transfer loss + a small charge loss.
It does not seem as if the calculation is an honest attempt to compare electricity and fossil: you can get the outcome you want by including the factors you want.
Electric Cars Release Less CO2 Over Lifetime Than Diesel Cars Even When Powered By Dirtiest Electricity In EU
Even when they are powered exclusively by the “dirtiest” grid-provided electricity in the world, plug-in electric vehicles are responsible for a smaller greenhouse gas footprint than diesel cars are, according to a new lifecycle analysis from VUB University (Brussels) and Transport & Environment (T&E).
https://cleantechnica.com/2017/11/01/electric-cars-release-less-co2-lifetime-diesel-cars-even-powered-dirtiest-electricity-eu/
https://electrek.co/2017/06/27/koch-brothers-electric-cars-fossil-fuels/
https://reneweconomy.com.au/koch-front-group-putting-misleading-attack-ads-electric-vehicles-85985/
"The argument that electric vehicles are just as polluting as gas-powered vehicles because they consume electricity produced from coal plants has been looming over electric vehicles for a long time."
https://electrek.co/2017/06/05/electric-cars-cleaner-than-gas-powered/
https://electrek.co/2017/06/27/koch-brothers-electric-cars-fossil-fuels/
https://reneweconomy.com.au/koch-front-group-putting-misleading-attack-ads-electric-vehicles-85985/
"The argument that electric vehicles are just as polluting as gas-powered vehicles because they consume electricity produced from coal plants has been looming over electric vehicles for a long time."
https://electrek.co/2017/06/05/electric-cars-cleaner-than-gas-powered/
https://news.cision.com/no/fortum-norge/r/fortum-loser-stort-miljoproblem-med-elbiler---resirkulerer-kobolt-og-oker-gjenvinningsgraden-for-bat,c2771192
https://thecorrespondent.com/7056/why-electric-cars-are-always-green-and-how-they-could-get-greener/741917761200-afaa6e5d
https://www.ucsusa.org/clean-vehicles/electric-vehicles/life-cycle-ev-emissions
https://www.tu.no/artikler/vi-ser-naermere-pa-elbilens-skitne-hemmeligheter/396938
https://www.youtube.com/watch?v=6RhtiPefVzM&feature=youtu.be
https://thecorrespondent.com/7056/why-electric-cars-are-always-green-and-how-they-could-get-greener/741917761200-afaa6e5d
https://www.ucsusa.org/clean-vehicles/electric-vehicles/life-cycle-ev-emissions
https://www.tu.no/artikler/vi-ser-naermere-pa-elbilens-skitne-hemmeligheter/396938
https://www.youtube.com/watch?v=6RhtiPefVzM&feature=youtu.be