Group Marth Inaugurates Ultra-Fast Charging Hub in Kehlen

On Thursday 9 July 2026, Luxembourg-based engineering and energy company Group Marth officially inaugurated a new 250 kW ultra-fast charging station integrated into its Voltizy Community renewable energy community at its headquarters in Kehlen.

The event brought together around 30 guests, including representatives of public authorities, customers, business partners, members of the Voltizy Community renewable energy network and other stakeholders involved in Luxembourg's energy transition.

According to the company, the new charging station also creates additional local electricity demand within the energy community, increasing opportunities to share surplus renewable electricity whenever it is available. Members of the Voltizy Community will also benefit from preferential charging rates outside office hours, during evenings and weekends.

"We have solar panels at the company and solar panels at home, but when the company's panels are producing electricity, I cannot use that electricity during the weekend. The opposite is also true when my home is producing electricity during the week while I'm at the office. It doesn't make sense," Rudy Kech, co-CEO of Group Marth Luxembourg, told Chronicle.lu, explaining how the idea for the project emerged. He said this led the company to create an energy community allowing locally generated electricity to be shared more efficiently between homes and businesses.

"We always test complex things ourselves. It's like our laboratory here. When it works, then we offer it to our customers," he added, noting that the ultra-fast charging station and battery storage system were first developed and tested at the company's own facilities before being rolled out as solutions for customers. 

According to Group Marth, the new infrastructure combines a 250 kW ultra-fast charging station capable of charging two vehicles simultaneously at up to 150 kW each, a battery energy storage system and an expanded photovoltaic installation with an annual production of around 100,000 kWh.

The company explained that electricity generated on site is first used to meet the building's own needs. Surplus electricity is then shared with members of the Voltizy Community, while the battery storage system helps optimise the use of locally generated renewable energy and supports the operation of the new charging station.

"The first step was to charge the vehicles of our employees. They are usually here for only one or two hours, which is not enough time with a conventional charger, so they had to use public fast chargers, where charging costs between fifty and sixty cents per kilowatt-hour," Patrick Marth, CEO of Group Marth, told Chronicle.lu. He added: "We realised we needed our own ultra-fast charger. Then we thought: why not build an energy community around it and use electricity generated by other members? That is how the whole ecosystem was created."

The project represents a total investment of around €410,000, including the charging infrastructure, battery storage system, expansion of the photovoltaic installation and a second ultra-fast charging station in Soleuvre. According to Patrick Marth, government support schemes helped reduce the company's own investment, while the project is expected to pay for itself within five to seven years through lower charging costs and additional services offered to members of the Voltizy Community.