Proving the Business Case for the Internet of Things

E.On partners Solarwatt to develop solar energy storage units

Steve Rogerson
March 15, 2016
German utility giant E.On is to develop its own electricity storage system in partnership with Dresden-based Solarwatt, which last year launched an electricity storage system called MyReserve. The first E.On models will be rolled out in Germany in a few months and will be available in increasingly larger numbers going forward.
E.On says the storage devices will be easy to install and, thanks to their modular design, easy to expand to increase capacity at any time. They will store electricity generated by a home solar system and therefore help users permanently reduce their electricity costs. The storage system will come with an energy app visualising the production and consumption for the user.
“An increasing number of our customers want to become more energy autonomous,” said E.On management board member Bernhard Reutersberg. “Together with Solarwatt we can offer them a complete solution that fits their individual needs. We aim to become a leading provider of electricity storage systems in Germany and to continually expand our palette of intelligent solutions for our customers.”
For several years, Solarwatt has marketed intelligent, complete solar systems that enable residential and small-business customers to generate their own electricity and heat.
“Our cooperative arrangement with E.On is an important milestone for Solarwatt,” said Solarwatt principal owner Stefan Quandt. “Earning the trust of Germany’s largest energy supplier indicates the success of our product innovation, which has taken us from being a manufacturer of solar modules to being a provider of systems.”
The cooperative arrangement with Solarwatt is another example of E.On’s focus on the new energy world, which is characterised by renewables, distributed generation, energy efficiency, microgrids and increasingly autonomous and proactive customers.
“We’re very proud that our smart, economical energy systems and high-quality products gave E.On the confidence to forge a partnership with us,” said Solarwatt managing director Detlef Neuhaus.
The potential for electricity storage devices in Germany is enormous. In just a few years nearly 100 per cent of solar arrays may be sold with a storage device. In addition, the country’s more than 1.5 million existing solar arrays offer huge potential for retrofitting with storage devices.
A big power station generates electricity around the clock. But a solar panel’s output varies with the amount of sunshine. It typically reaches its highest level on cloudless days around noon, when the sun is at its zenith. By contrast, families typically consume the most electricity in the morning and the evening. An electricity storage device bridges this gap by storing electricity when it is produced and discharging it when families need it to power lights, appliances and home entertainment systems. Storage devices make renewable energy more flexible and reduce the amount of electricity that customers have to import from the grid, thereby reducing their energy costs.
Founded in 1993, Solarwatt is one of Germany’s leading providers of photovoltaic systems. The Dresden-based company, which has more than 200 employees, operates throughout Europe. Its products range from solar modules to fully integrated, intelligent systems for domestic and commercial use. Since 2015, the company has partnered with Bosch to market energy systems. Since 2013, it has been a cooperation partner in BMW’s 360Ëš Electric programme to promote efficient, low-emission electric mobility.