Kathrin Theelen

Part of First Solar, Inc., First Solar European Technology Center AB is a Swedish company that is leading the evolution in solar by commercializing the next generation of photovoltaics. The company is based in Uppsala, Sweden. The company's unique PV power booster technology increases solar cell efficiency by 25 percent over conventional solar cells. The company is on a mission to bring solar power to everyone by putting highly efficient and affordable perovskite tandem solar cells within reach around the world. The company was founded in 2019 by Erik Wallin, Kathrin Theelen, Lars Stolt, Mats Urban Ljunggren, and Olle Lundberg. Mats Urban Ljunggren has been the CEO of the company since 2019. First Solar European Technology Center was acquired by First Solar, Inc. from Magnora ASA on May 12, 2023 for $7.74 million.