G quadrat GmbH

G quadrat GmbH is a leading specialist in geosynthetic solutions for environmental protection and civil engineering, with more than 25 years of expertise in research, planning and professional installation.

We specialize in next-generation Pit Thermal Energy Storage (PTES) systems, utilizing innovative high-temperature resistant PP-HTR liners capable of withstanding 90 °C for more than 25 years.

By providing integrated services from initial design to certified on-site installation, we deliver the sustainable and cost-effective thermal storage solutions essential for a flexible energy transition.