Battery Storage Systems for Green Electricity

Tesvolt GmbH in Wittenberg is supplying energy storage systems for Europe’s largest e-car charging park

Wittenberg-based company Tesvolt GmbH is supplying energy storage containers for Europe’s largest electric car charging park at the Kreuz Hilden highway intersection in Germany. The Saxony-Anhalt manufacturer’s battery storage systems provide a total capacity of two megawatt hours, using exclusively renewable energies.

“To bring affordable, clean energy to every corner of the world. Even to places where people have no access to the power grid.” With this vision in mind, Daniel Hannemann and Simon Schandert founded TESVOLT in 2014. Their company, based in Lutherstadt Wittenberg, has a clear goal: to develop and manufacture battery systems that store electricity from renewable energy sources as efficiently as possible. The energy storage containers for the e-car charging park in North Rhine-Westphalia are exactly in line with the company philosophy devised by the two entrepreneurs. Every single station in Europe’s largest charging park project will be supplied with green energy. It will be sourced in part from a large rooftop photovoltaic installation above the carports, and along with the electricity generated by two wind power installations, stored temporarily in the Wittenberg manufacturer’s battery storage systems. They will also store green energy from the public grid when it is particularly inexpensive and relieve the grid when there is more energy available than is being drawn. “It’s particularly important that a charging park’s storage systems can be quickly charged and discharged at any time,” says Gregor Hinz, energy consultant and general technical planner for the project. “Currently, only a very few storage products on the market are capable of this,” he says confidently. What sets Tesvolt apart is that its TPS flex storage container “offers very high performance while being relatively compact” and is capable of fulfilling the high technical demands.

Tesvolt developed its own smart battery management system

A smart battery management system developed by Tesvolt engineers ensures that the cells are charged and discharged as efficiently as possible, and has already won the company a number of accolades including the 2019 smarter E Award in the Outstanding Projects category and the 2018 international Alliance for Rural Electrification (ARE) Award for a project supplying off-grid energy to an avocado farm in South West Australia. Four years ago the commercial storage system manufacturer was awarded the Hugo Junkers Prize for research and innovation from Saxony-Anhalt, when its smart battery management system came first in the Most Innovative Product Development category. The judging panel was particularly impressed by the energy storage unit’s high cell balancing efficiency of 92 percent and its long lifespan, which is made possible by Tesvolt’s proprietary battery management system. “That was a huge acknowledgement for us,” recalls Daniel Hannemann.

Saxony-Anhalt is home to Europe’s first gigafactory for battery storage systems

From the outset, the entrepreneurial duo focused on high-capacity storage systems. Why? Because in many countries, commerce and industry have the highest energy requirements. They worked on their own battery control technology “to make the products as durable and economical as possible,” says Hannemann. Today, Tesvolt produces its commercial storage solutions in series in the first gigafactory for battery storage in Europe and delivers them all over the world. The factory in Lutherstadt Wittenberg makes energy storage systems of various size classes. The company has already completed over 1,200 storage projects around the world and more than 1,000 customers are using “made in Saxony-Anhalt” systems. Tesvolt produces its storage systems using prismatic lithium nickel manganese cobalt oxide cells (lithium NMC) from Samsung SDI. According to CEO Daniel Hannemann, “One of the benefits of our storage systems is that they suit any application, be it high- or low-voltage, on- or off-grid. And they can be combined with any renewable energy source but equally, with a cogeneration unit or a fuel cell.”

E-mobility makes all the more sense with renewable charging energy

Tesvolt’s business director and co-founder is delighted that commercial energy storage solutions from Lutherstadt Wittenberg will soon be in use at what is probably the largest e-car charging park. “We’re mega-proud to be supplying the storage systems for this holistically-conceived project,” says Hannemann. “E-mobility makes all the more sense when electric cars are charged with renewable energy. The Kreuz Hilden charging park is a perfect example.” The storage systems from Saxony-Anhalt will supply 114 charging stations. The site, which is owned by an organic baker, will also have office buildings and catering facilities with an organic bakery and a vertical farming greenhouse. According to Tesvolt, the first construction phase – around half of the charging stations – will be inaugurated in August.

Author: Manuela Bock


Tesvolt GmbH
Am Heideberg 31
06886 Lutherstadt Wittenberg
Tel (toll-free in Germany): 0800/8 37 86 58
Tel (international): +49 (0) 3491/8797-100

HERE we set mobility in motion.

The mobility of tomorrow is being conceived and tested in Saxony-Anhalt. HERE, components, systems and technologies are being developed as advance development for the automobiles that the OEMs will create tomorrow. And HERE procedures are optimised for new, manageable, and rapidly implementable technologies.

> Further information about New Mobility in Saxony-Anhalt HERE.