The water consumption prediction has an important place within the water economy. For example, Alicante water utility, in order to be able to distribute potable water to its residents, needs to fill its water tanks. Due to lower energy prices, Alicante water utility is refilling their water tanks over the night – every night. In order to prevent bacteria development in potable water, water needs to be consumed – or disposed (a loss). At the same time, if they run out of water during the day, water utility needs to refill the tanks with energy is in high tariff.