A scenario-based approach to predict energy demand and carbon emission of electric vehicles on the electric grid

UK plans to ban the sale of new diesel and petrol cars by 2030 to be replaced by electric vehicles (EVs). The question is, will the UK's electrical grid infrastructure ready for this change? This comparative study investigates the effect of UK green vehicles on the electrical grid and presents a new insight into improving their energy demand and carbon dioxide (CO2) emissions to the electrical grid. The results show that even when there is a very high level of market penetration of EVs, the overall effect on annual energy consumption may seem minimal. On the contrary, the effect that EVs may have on the electrical grid is dependent on the time-of-day EVs are being charged. Therefore, this study concludes that measures need to be put in place to control charging times of EVs and this would help restrict the total daily electricity and electrical energy demands. The introduction of EVs reduces the overall CO2 emissions mainly because a proportion of petrol and diesel cars are replaced by EVs. However, CO2 emissions can only reduce up to a certain level and this reduction of CO2 will have less effect due to an increasing number of EVs in the electrical grid. To reduce CO2 emissions further, the electricity that relies on high-carbon fossil fuels in the electrical grid should be set at the minimum level.

Automated summary

The UK plans to ban the sale of new diesel and petrol cars by 2030 and replace them with electric vehicles (EVs). However, there are concerns about whether the country's electrical grid infrastructure is ready for this shift. This comparative study examines the impact of green vehicles in the UK on the electrical grid and offers insights on improving their energy demand and carbon dioxide (CO2) emissions. The findings indicate that the overall effect on annual energy consumption may appear minimal even with a high market penetration of EVs. However, the impact on the electrical grid depends on the charging times of EVs. Therefore, measures should be implemented to control EV charging times to manage daily electricity and energy demands. While the introduction of EVs reduces CO2 emissions by replacing petrol and diesel cars, the reduction in CO2 emissions will diminish as the number of EVs in the electrical grid increases. To further reduce CO2 emissions, it is crucial to minimize the use of high-carbon fossil fuels for electricity generation in the grid.