E.ON installs an innovative energy storage system in Zánka, Hungary

10 December 2020
E.ON installs an innovative energy storage system in Zánka, Hungary

To tackle local challenges in the distribution grids, E.ON Hungaria Group and E.ON Innovation install a unique energy storage system in the Hungarian village of Zánka

The total installed capacity of solar power plants connected to the grid has grown by more than 17 times in the last 4 years in E.ON’s service area in Hungary alone, and further significant growth can be expected in the future, as solar systems are becoming increasingly popular between industrial users and private households. With increasing renewable energy production, electricity distribution networks need new capabilities. In addition to delivering energy to users in the traditional way, they must also be able to receive energy produced from renewable sources from geographically scattered units. This makes energy flow in the opposite direction in the network to what it was originally designed for and thus poses a serious challenge to grid operators.

E.ON Hungária Group, in collaboration with E.ON Innovation, has found an innovative and cost-effective solution to tackle this challenge. With the help of the energy storage system more renewable energy systems (RES) can be connected to the grid faster and in a more affordable way. The energy storage, installed in the village of Zánka, is an interim solution for local hotspots where new renewable plants, exceed the currently available connection capacities. The storage system leads to significant cost savings as regardless of limited capacities the solar panels can be connected to the grid at the closest connection point. This way costly and time-consuming work that would be needed to connect them at an available, but more distant point is avoided.

On top of that, with this solution energy from renewable sources can be flexibly aligned with consumer needs. The battery energy storage system stores the surplus of solar power during the day when production is high, but consumption is low, and makes it available in the evening, when more energy is needed. By combining the storage solution with active energy management and intelligent metering systems in residential houses the project managers are also planning to promote the development of new energy communities.

E.ON installs an innovative energy storage system HELGA in Zánka, Hungary

Since the energy storage system installed in Zánka can be easily transported, installed and commissioned, it can later be relocated to other locations if required. „Smart grid is the basic pillar of a sustainable future. With our innovation projects, we aim to ensure that families and businesses can benefit from green resources, while we secure a stable groundwork for dependable energy supply. To achieve this, we equip our electric network with the newest innovations that not only contribute to Hungary's economy, but also bring us closer to achieving our country's and our company's climate goals,“ says Attila Kiss, E.ON Hungária Group’s Chairman and CEO.

The installed battery energy storage system in Zánka is one of two demo-sites of the project HELGA (Hungarian Energy Storage: Local Communities for Global Advantage) with a total budget of approximately € 3.6 million. HELGA has been implemented as part of the EU-supported IElectrix program. The IElectrix consortium consists of 16 project partners, who aim to develop mobile storage as a fast available and cost-effective solution to tackle local challenges in the distribution grids. The storage solutions are designed to reduce grid overloads, promote decentralized generation, increase flexibility in the networks and enable energy communities.

E.ON Innovation is the technical director of IElectrix. The first demo-site of the IElectrix program has been installed in September 2020 in Friedland, Germany.  In spring 2021 another demo-site in Duzs is to be put into operation.

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