Carl-Johan Linér

STRI AB is a Swedish company that specializes in high voltage testing for smart grid lab research and development. The private company's laboratory, located in Ludvika, Sweden, is equipped to handle tests on products with system voltages up to and above 800 kV DC and AC. The company offers a range of testing services, including high voltage tests, pollution and environmental testing, cable testing, temperature rise tests, and more. The company performs independent high voltage tests on power products and are accredited by Swedac, the Swedish accreditation body. The company is a member of Sats, the Scandinavian Association for Testing of Electric Power Equipment, which is a member of the Short Circuit Testing Liaison (STL).

Hitachi Energy Sweden AB engages in power and automation technologies. The firm composed of divisions including electrification products; discrete automation and motion; process automation; and power grids division. Its products include transformers, drives, air circuit breakers, power semiconductors, fluoride monitors, and indoor fuses. The firm offers services to the utility, industrial, and commercial customers. The company is headquartered in Västerås, Sweden.