Some of the estimates suggest that this measure can help to reduce energy use around the country for at least 0.5%. A lot of studies were conducted to prove these results and some of them were based on different systems of measuring data and complex simulations. At the same time, there are just as many studies that show the opposite effect of implementing DST and claim that there is no noticeable benefit from this practice or even argue that the results are actually worse if the fuel consumption is taken into account. Although, it is proven that it definitely helps to reduce energy and heating usage in the evening, but it most likely results in higher demand for gasoline and electricity during the dark and cold mornings.