In the period of record of low water the river Dniester requires special treatment and protection. It is not just about limiting the construction of new hydropower plants, but also on the revision of the activities available. According to the Water Code of Ukraine, if the level of the total river flow approaches the total volume of reservoirs created on it, then it is impossible to build new reservoirs, as it destroys the ecosystem of the river. The «Green Tariff» from the state makes the HES a very attractive business, but only its benefit to everyone, other than the owners, is doubtful.There is a view supposedly small hydro is environmentally friendly electricity. This is incorrect and harmful statement - hydroelectric power stations are too expensive, because it disrupted the ecosystem of the river are flooded large areas that can be used in agriculture.