The number of cars on the roads is increasing rapidly, leading to a sharp increase in greenhouse gas emissions. The unintended consequences of this increase are air pollution, which has a negative impact on human health, and a high concentration of greenhouse gases in the atmosphere that causes climate change. To reduce the detrimental effects of an increased number of cars, many states are actively encouraging the production and purchase of electric cars. The use of electric cars and the production of electricity from renewable sources can significantly reduce climate change and contribute to environmental protection. Although the first electric cars appeared in the second half of the 19th century, their high cost, lack of filling stations, and prolonged charging were barriers to mass production and sales. It is only in the last few decades that the awareness of the harmful effects of classic vehicles on the environment has prompted manufacturers to opt for the mass production of electric cars. Greater investment in research and an increase in the number of electric charging stations should lead to a fall in the price of electric cars and an increase in battery power, which should remove the main barriers to buying electric cars. The basic elements that distinguish an electric car from a classic car are the electric motor, the motor controller and the batteries. The electric motor is much simpler than the petrol engine and easier to maintain, the electronics are reliable, but the battery is the main brake that slows down the faster development of electric cars. Most single-car electric cars travel just over 200 km, with batteries weighing several hundred kilograms, and typically lasting several years or about 1000 recharges when used more intensively. Buying a new battery is a big expense, which is why many buyers find it harder to buy an electric car. In Croatia, more and more electric car models of all classes are on the market, and the Government is encouraging subsidies to buy them. ,