E.ON is to develop an electricity storage system for householders in Germany.

It has partnered with SOLARWATT to develop the project which is expected to help consumers reduce energy costs.

The electricity generated from rooftop solar panels in customers’ homes will be stored in the device.

Householders will be able to control their energy production and consumption through an app which can be downloaded.

According to E.ON, nearly 100% of solar arrays could be sold with a storage device in the next few years.

Bernhard Reutersberg, E.ON Management Board Member said: “An increasing number of our customers wants to become more energy autonomous. Together with SOLARWATT we can offer them a complete solution that fits their individual needs.”

In the UK, the government cut financial support for domestic solar projects by 64%.