Storage Heaters Expensive

storage heaters
An electric heater that accumulates heat in water or bricks during the night (when electricity is cheaper) and releases it during the day
(Storage heater) A storage heater is an electrical home appliance which stores thermal energy during the evening, or at night when base load electricity is available at lower cost, and releases the heat during the day as required.

expensive
Costing a lot of money
having a high price, cost
high in price or charging high prices; "expensive clothes"; "an expensive shop"
In business, retail, and accounting, a cost is the value of money that has been used up to produce something, and hence is not available for use anymore. In economics, a cost is an alternative that is given up as a result of a decision.