There are two main types of electric hot water systems - electric hot water storage tanks, and continuous flow (instantaneous) electric water
heaters. A storage tank system holds a large amount of water in an insulated storage tank, which keeps the water hot and heats it when necessary.
An instantaneous system on the other hand only heats the water when it passes through the pipes. There is also a range of other options, such as
solar hot water systems and heat pump systems, which incorporate low amounts of electricity to help boost water temperatures.