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Examining several studies on the impact of EVs, Redburn expects average global electricity consumption from EVs to grow from around 8TWh in 2017 to 1,800TWh by 2040. While this is a massive increase, it represents only 5% of projected global electricity consumption in 2040 – not a huge percentage.

Why so little? The simple answer – which must be most annoying to utility executives the world over – is that EVs are incredibly efficient, certainly compared to internal combustion engines (ICEs).

According to Redburn: “Filling a vehicle with oil is one of the most expensive ways to purchase a usable unit of mobility: by a factor of 4-5x. This is because ICE vehicles are inefficient and fuel taxes are high, especially in Europe.

“Moreover, driving 100km in a conventional vehicle requires roughly 80kWh of energy, because ICEs waste some 75-80% of their fuel generating heat rather than mechanical energy – the clue is in the word ‘combustion’. Moreover, a typical ICE has as many as 1,000 moving parts as opposed to 70-80 or fewer for an EV.

“This means that the average EV needs as little as 25kWh to travel 100km, even after accounting for the energy lost during charging and ‘vampire losses’ as the battery mildly depletes over time. Divide 80kWh/100km by 25kWh100 km and the result shows EVs are 3.3x more efficient if not better.”



On 2021-10-17 10:32, VaidotasN wrote:
> > įdomus skaičiavimai.. prie esamo elektros poreikio (dabr suvartojamos > elektros) pridedame naują elektros poreiki ty 80proc. elektromobilių
> ir rezultate tik 15-20proc padidejimas?