The savings for using electricity at night and at daytime are negligible. This is the conclusion from price comparing website energieleveranciers.nl, among 10,000 customers.
Almost 25 percent of the Dutch wait till after 11.00 pm or for the weekend starts to put on the washing machine or the dish washer and so be able to use the cheaper rate during these times. On average it seems now that the advantage is only 10 cents per week. About 1 percent of the people reaches a savings of 30 euro per week, while 20 percent of the people pays even more.