Thomas Lemper

Part of Trius Holdings SCA, ista Deutschland GmbH is a private company based in Essen, Germany that provides solutions to make buildings climate-friendly, safe, and comfortable. The German company's digital infrastructure can also be used for other applications, such as digital smoke alarm devices, which can be remotely serviced, increasing residents' safety. With over 6,000 employees in 22 countries, ista aims to become the partner for digitization and smart solutions for building owners and their residents. The company was founded in 1957 by Johannes Schultz, Karl Völker, and Thomas Zinnöcker has been the CEO of the company since 2016. ista offers data-based products and services that make individual energy consumption transparent to residents, helping them save energy, costs, and CO2 emissions.

ista North America, Inc. provides accounting services. The company offers its services to property managers, home owners, and utilities service providers. Its offices are located in Irvine, California; Atlanta, Georgia; and Jacksonville, Florida. The company was founded in 1902 by Odin & Aksel Clorius and is headquartered in Alpharetta, GA.