- Business
- TESS Holdings Co., Ltd. provides engineering, procurement, and construction services along with energy supply solutions focused on energy conservation, renewable energy, and intelligent energy infrastructure primarily in Japan. The company operates through two main segments: the engineering segment, which delivers EPC for cogeneration systems, LNG satellite systems, utility energy-saving systems, photovoltaic generation systems, and biomass power systems; and the energy supply segment, which includes operation and maintenance of renewable energy power plants, renewable energy power generation with over 300MW capacity across solar plants such as Ibaraki Ushiku Mega Solar (29.4MW) and Kochi Muroto Mega Solar (30.2MW), biomass facilities like Mie Enewood Matsuzaka Woody Biomass Power Plant (5.8MW), electricity retailing, energy management services, 24-hour remote monitoring, energy resource aggregation business using virtual power plants and demand response, and fuel supply services including LNG and biomass fuel. Founded in 2009 as the holding company with the TESS Group originating in May 1979, TESS Holdings maintains its registered head office in Osaka at Shin-Osaka Prime Tower and a Tokyo head office, serving industrial customers, power retailers, and transmission operators through consolidated subsidiaries and equity affiliates. Recent developments include a December 2024 capital and business alliance with Tokyo Century, under which Tokyo Century acquired a minority stake and agreed to consider tolling agreements for battery energy storage systems (BESS) projects, followed by a February 2025 partnership with Daiwa Energy & Infrastructure to develop 2GWh of grid-scale BESS projects in Japan within three years, leveraging TESS's development expertise and Daiwa's investment capabilities.