*As of March 31, 2026 (Total of solar, wind, hydroelectric and biomass power generation, Includes in-house consumption)
Daiwa House Group’s Environment and Energy Business
Nobuo Ishibashi, founder of Daiwa House Industry, foresaw that “the 21st century would be the age of wind, sun, and water.” Carrying forward his vision, the Daiwa House Group entered the wind power generation business in 2007. Since then, drawing on the Group's extensive track record in construction, one of its key strengths, we have promoted the adoption of solar, wind, and hydroelectric power generation by providing solutions tailored to existing building and ground conditions. In addition, we are engaged in the sale of electricity generated at power plants we develop and operate, as well as in the electricity retail business.
As of March 31, 2026, the Daiwa House Group had constructed renewable energy generation facilities with a total capacity of 3,592 MW and developed 825 renewable energy power plants nationwide with a combined capacity of 1,046 MW.
Leveraging the expertise we have accumulated over the years, together with our nationwide network of land information, we will help build a decarbonized society.
Utilization of the sun (Solar power generation systems)
800 locations 835MW*
Utilizing various unused land parcels across Japan, the Group has been developing its DREAM Solar project, a one-stop solar power service that handles everything from installation to operation and management. In addition to designing and constructing large-scale solar power facilities (solar farms), we are currently strengthening our corporate power purchase agreement (PPA) initiatives. This represents a new business model that can thrive after the planned end of Japan’s feed-in tariff (FIT) system. Utilizing our nationwide land database, we are actively pursuing off-site PPA projects based on suitable site searches, as well as on-site PPA projects by utilizing rooftops and other structures.
DREAM Solar Natsumidai III
DREAM Solar Konoyama
DPL Misato
DREAM Solar
Ishikawa Hakui Horikaeshimmachi
TOPIC
New business scheme for expanding renewable energy: The PPA model
We offer power purchase agreements (PPAs) in the form of a contract under which we install solar power equipment on rooftops or unused land that we rent from the customer. The electricity generated by the equipment is then sold to the customer for use in their facilities. Since the customer does not own the equipment, it is also known as a third-party model. For customers, this allows cost-effective adoption of renewable electricity, as there are no initial installation costs or maintenance expenses.
Off-site PPAs
A service model where renewable electricity is supplied to the customer’s operation site using power generation equipment installed in a separate location.
On-site PPAs
A service model where renewable electricity is generated at the customer’s operation site, and supplied without utilizing the power grid.
Utilization of wind (Wind power generation systems)
18 locations 26MW*
The Daiwa House Group first installed three large wind turbines, with a combined generating capacity of 1 MW, at resort hotels in Okinawa Prefecture and other locations that were then owned by the Group, between October and December 2000. We then fully entered the wind power generation business with the Sadamisaki Wind Power Plant in Ehime Prefecture, which began operations in February 2007 with a generating capacity of 9 MW. Since then, we have installed, operated, and maintained a wide variety of wind turbines, ranging from large to small.
DREAM Wind Sadamisaki
DREAM Wind Ehime Seiyo
Utilization of water (Hydroelectric power generation systems)
2 locations 2MW*
Suganuma First Hydroelectric Power Plant
In November 2017, we developed and began operating a hydroelectric power plant in Hida City, Gifu Prefecture. The electricity generated there is used in the Funabashi Grand Oasis development in Chiba Prefecture, which was also built by the Group. This community development has achieved a renewable energy usage rate of 100%, as a result of the Group’s coordinated efforts.
*Use of renewable energy value using non-fossil fuel energy certificates
*As of March 31, 2026
