Total support for the transition to high-performance homes

We contribute to our customers by offering a product lineup with the high-level sealing, strong heat insulation, energy creation, and resilience essential for high-performance homes, and through total support including optimal device selection, fabrication, and installation to realize low initial and running costs, while at the same time considering the environment.

Vehicle to Home (V2H)

We are focused on proposing “V2H” as a new initiative using our top-class industry sales record in the home solar energy systems market and our ample procurement network.


Given the way that people use vehicles is changing with the development of electric vehicles, we anticipate demand for large-scale storage batteries, and by helping the market expand through solutions with new business categories for “transportation methods” plus “home consumption-type storage batteries,” we will contribute to the realization of a carbon neutral society.


Furthermore, using the installation capabilities of our associates Doryoku Co., Ltd. and HIT Engineering Co., Ltd., one-stop proposals are possible.

Internal and external materials for rolling stock

We provide solutions based on the keywords of energy saving, weight saving, and labor saving to railway operators and manufacturers of rolling stock in Japan and overseas, contributing to the realization of a decarbonized society.

Energy saving solutions for commercial facilities

We provide one-stop proposals from planning to installation including country-wide handling of LED construction and interior construction to promote energy saving and environmental improvement at commercial facilities, sales of refrigerant gas to refill refrigerating devices, and installation of electric vehicle charging stations for parking lots, thereby contributing to energy saving and cost cutting.