BayWa r.e. & Ampt deploy wind, solar & storage at ‘unique’ German microgrid

February 29, 2024

Renewable energy company BayWa r.e. and power conversion technology company Ampt, have deployed a combination of wind and solar and generation – as well as battery storage – as part of a microgrid at the Fraunhofer Institute for Chemical Technology (ICT) campus in Pfinztal, Germany.

BayWa r.e. installed three new rooftop arrays and one new ground-mounted system to expand renewable energy utilisation on site. These PV systems with a total capacity of 690 kWp are now connected to the power grid without their own inverters, but via an existing 2 MW wind turbine. The microgrid also includes a 10 MWh flow battery energy storage system completes the triad.

A statement said the project “represents a progressive plant combination of wind and solar energy including battery storage, which is unique in Europe in this form”.

Each of the different technologies was integrated through a shared DC bus – commonly referred to as ‘DC-coupled’ architecture. “In this way, the generation variability across the PV systems can be managed and the different systems united at a high and fixed voltage to increase system efficiency,” the statement added.

Andrea Grotzke, global director of energy solutions at BayWa r.e., said: “We are delighted to bring this milestone project to life. Ampt’s technology simplified a technically very complex project. The way we have added solar to the existing wind energy and battery storage system is unique, and in successfully completing this project we were able to further improve our own expertise and capabilities. We are pleased with the result of this innovative power solution symbiosis and our ability to meet our customer’s individual requirements.”

Levent Gun, CEO of Ampt, added: “Combining both rooftop and ground-mounted solar in seven different orientations and two module sizes in one common microgrid with wind power and batteries is a significant challenge. This project is a testament to the capabilities of our industry-leading power conversion technology to simplify control of the diverse systems spread across a site. We look forward to expanding our relationship with BayWa r.e. and continuing to deploy our technology to solve the challenges of our customers in solar and energy storage applications.”