SUBSCRIBE
PROFILE

Mori Building completes three hybrid solar plants through PPA structured with TEPCO

Mori Building has completed three solar-plus-storage plants in Japan to supply its real estate assets through an intra-group partnership structured by TEPCO Energy Partner.

Share:

Comprehensive energy news coverage, updated nonstop

Annual subscription

8.25$/month*

*billed annually at 99$/year for the first year then 149,00$/year ​

Unlimited access • Archives included • Professional invoice

SUBSCRIBE - 99$/year

OTHER ACCESS OPTIONS

Monthly subscription

Unlimited access • Archives included

5.2$/month*
then 14.90$ per month thereafter

FREE ACCOUNT

3 articles offered per month

FREE

*Prices are excluding VAT, which may vary depending on your location or professional status

Since 2021: 35,000 articles • 150+ analyses per week

Tokyo-based real estate developer Mori Building has completed the construction of three hybrid solar power plants in the Tokyo TSO service area. These facilities, combining 7.2MWDC of generation capacity with 11MWh of storage, will operate under an intra-group Power Purchase Agreement (PPA) structured by TEPCO Energy Partner, a subsidiary of Tokyo Electric Power Company.

An internal partnership model for energy supply

The plants are located in Tochigi Prefecture for one site, and in Hitachi City, Ibaraki Prefecture for the other two. Commissioning is scheduled to begin in phases from January 2026. Once fully operational, the plants are expected to generate approximately 10GWh annually. The electricity produced will be delivered to buildings operated by Mori Building, including the Toranomon Hills Mori Tower, via a sleeved supply mechanism managed by TEPCO Energy Partner. Additional renewable power from other sources under contract will also be included.

Turnkey contract awarded to Ecokaku

The development and construction were carried out by Japanese firm Ecokaku under a turnkey Engineering, Procurement and Construction (EPC) contract worth approximately JPY2bn ($13.2mn). These projects are designed for direct internal use by Mori Building, bypassing wholesale markets through a structured energy partnership between group entities.

Previous agrivoltaic project collaboration

Mori Building had previously partnered with Ecokaku on the construction of six agrivoltaic solar power plants, with a combined capacity of 12MWDC, also located in the Tokyo TSO area. These units were similarly integrated into an intra-group PPA framework, reflecting a sustained collaboration between the two companies.

Developed outside public subsidy regimes

Unlike the majority of hybrid projects in Japan—often retrofits of existing assets under the Feed-in Tariff (FIT) scheme and converted to the Feed-in Premium (FIP) system—these three facilities were purpose-built for independent operation without subsidies. This approach reflects a trend toward direct structuring of energy partnerships within corporate groups.

  • Popular on energynews.pro
PLN secures 103 LNG cargoes for 2026 as Indonesia anchors its supply strategy
AfDB grants $7.41mn to Liberia to complete hydroelectric power plant
Power outages in the United States reach record 11 hours per customer in 2024
Sunman secures AUD171 mn to launch 500 MW solar factory in Australia
Natura Resources accelerates molten salt reactor development with DOE support
Octillion completes solar rollout at battery plant in Pune
Octillion has fully converted its electric vehicle battery production facility in Pune to solar power, initiating the rollout of an energy strategy aimed at achieving energy autonomy for all its India-based operations by 2027.
Westbridge receives final approval for solar and storage project in Canada
Westbridge Renewable Energy has secured final regulatory approval in Alberta for its Dolcy Solar project, marking the last step before construction can begin.
Botswana signs partnership with Oman including 500 MW solar power plant
Botswana has concluded a series of energy agreements with Omani public investors, including the development of a 500 MW solar power plant and projects in fuel storage and petroleum trading.
Greenbuddies deploys Germany’s largest agrivoltaic power plant for MaxSolar
With 16.8 MWp of capacity, the Triticum plant in Bavaria marks a strategic investment for MaxSolar, strengthening the agrivoltaic model in the German energy landscape.
Greencells to migrate 3 GW of solar projects to 3E’s platform
Greencells has signed a partnership with Belgian company 3E to transfer over 3 GW of solar and storage capacity to SynaptiQ, a central monitoring and analytics platform.
Grenergy sells seven photovoltaic plants to Ecopetrol in Colombia
Spanish group Grenergy has signed an agreement to sell seven solar projects with a total capacity of 88 MW to Ecopetrol, as part of its asset rotation strategy.
Zenith Energy launches construction of three 7 MWp solar projects in Italy
Zenith Energy has launched a tender for the construction of three solar plants totalling 7 MWp in Italy, with expected bank financing covering up to 90% of costs.
JA Solar launches photovoltaic solution for extreme desert environments
JA Solar unveils a pioneering white paper on photovoltaic systems in arid regions, with a module designed to withstand extreme desert conditions and improve long-term energy yield.
Shikoku Electric Power expands solar acquisitions and targets water surfaces
Shikoku Electric Power lowers its acquisition threshold for solar projects to 500kWAC and calls for proposals to develop floating plants on reservoirs of at least 15,000m².
Canadian Solar commissions 20 MWAC solar plant in Japan under 25-year virtual PPA
Canadian Solar has started delivering non-fossil certificates from a new 20 MWAC solar plant in Okayama under a 25-year virtual power purchase agreement with a Japanese company.
Ecopetrol targets 88.2 MWp with acquisition of seven solar projects in Colombia
Ecopetrol has reached a conditional agreement to acquire seven companies holding photovoltaic projects across four Colombian departments, for a total potential of 88.2 MWp.
EBRD grants €192 mn to finance 531 MW of solar in Romania
Three photovoltaic plants will receive financing structured by the European Bank for Reconstruction and Development to strengthen Romania's electricity capacity and attract private capital to the sector.
A €15mn solar farm and organic dairy project launched in Loiret
Loiret Energie and Terres d’Energie Développement will invest €15mn in a 31.5-hectare agrivoltaic farm in La Ferté Saint-Aubin, combining electricity production and organic cattle farming.
Canadian Solar Infrastructure Fund acquires non-FIT solar asset for ¥253.5mn
Canadian Solar Infrastructure Fund makes its first acquisition outside the FIT scheme with a 1.1 MW solar plant in Tsukuba, valued at ¥253.5mn ($1.7mn), under a corporate PPA agreement.
Sunsure Energy signs long-term solar agreement with Bisleri in India
The agreement will enable Bisleri to meet 48% of the electricity needs at its Sahibabad site through solar power supplied by Sunsure, cutting annual CO₂ emissions by nearly 2,700 tons.
Vikram Solar opens 5 GW plant in Vallam, reaches 9.5 GW capacity
Vikram Solar has commissioned a new 5 GW automated plant in Vallam, Tamil Nadu, raising its total capacity to 9.5 GW and marking a key milestone in its industrial expansion strategy in India.
Scatec secures 1.1 GW solar PPA to supply Egyptalum amid CBAM pressure
Norwegian group Scatec is developing a 1.1 GW solar plant with 200 MWh of storage for Egypt Aluminium, under a 25-year contract backed by the EIB, AfDB and EBRD.
GreenYellow signs 15-year hybrid solar contract with Thai retailer Dohome
GreenYellow has signed a major energy deal with Dohome to deploy 10.5 MWp of solar and 13 MWh of storage across 15 sites, marking one of the largest hybrid projects in Thailand’s retail sector.
ENEOS to build two solar plants on former JR Hokkaido railway tracks
ENEOS Renewable Energy will develop two solar installations totalling 4MW on a decommissioned JR Hokkaido line, under a power supply agreement signed with the railway company and the regional electric utility.
RWE commissions 300 MW solar and storage project in Texas
RWE has commissioned a project combining 200 MW of solar and 100 MW of battery storage in Milam County, Texas, addressing the growing electricity demand and expanding its operations in the United States.

All the latest energy news, all the time

Annual subscription

8.25$/month*

*billed annually at 99$/year for the first year then 149,00$/year ​

Unlimited access - Archives included - Pro invoice

START - 99$/year

Monthly subscription

Unlimited access • Archives included

5.2$/month*
then 14.90$ per month thereafter

*Prices shown are exclusive of VAT, which may vary according to your location or professional status.

Since 2021: 30,000 articles - +150 analyses/week.