The Economy 7 tariff offers customers lower rate electricity between midnight and 8am in the winter, and 1 - 9am in the summer, and a slightly higher rate in the daytime. This tariff is predominantly for customers that use the majority of their electricity overnight - for example, by using storage heaters that run through the night. The cost of the Economy 7 tariff varies, depending on your usage and what region of the country you're in.
