Air Water has completed a demonstration facility at the Shinagawa Clean Center in Tokyo for high-CO2-concentration waste combustion under NEDO's Green Innovation Fund. Air Water designed and installed liquid oxygen supply, CO2 capture and CO2 liquefaction equipment, targeting a CO2 capture rate of more than 90% from waste treatment facilities.
Keiyo Gas opened its first domestic grid-scale battery storage facility in Isesaki, Gunma, beginning full-scale operation on October 1, 2026. The 2 MW, 8 MWh high-voltage facility is operated by KG BESS LLC and was developed and constructed by Sun Village; Marubeni New Power handles market transactions as aggregator.
KC-22 Investment, jointly funded by Chubu Electric Power and Komata Construction, completed construction of the Noba Solar Power Plant in Hachinohe, Aomori, and began commercial operation on October 1, 2026. The plant has 1,990 kW of generating capacity and is expected to produce approximately 3.4 million kWh annually.
Kawada Industries introduced an on-site solar power purchase agreement system at its Yasui Factory in Nanto, Toyama, starting September 1, 2026. The system is expected to generate 526,900 kWh annually, with surplus electricity supplied to three other Kawada facilities in the Toyama area.
Sumitomo Corporation, through its wholly owned subsidiary BS Holdings, has started construction of a grid-scale battery storage facility (rated output 62 MW, storage capacity 291 MWh) in Namie, Fukushima, financed via project finance led by MUFG Bank. The facility was selected under Japan's long-term decarbonization power source auction, with commercial operation planned for 2029; the disclosure does not state the investment amount, contractor or equipment supplier.
J-POWER has started full-scale construction of the Mimaki Power Station at the Miboro Dam in Shirakawa, Gifu. The facility will install a 550 kW generating unit on an existing river-maintenance-flow discharge pipe and is scheduled to begin operation in FY2028.
West Holdings, Mitsui & Co. Realty Management, e-dash and JERA Cross have agreed to develop more than 10 MW of rooftop solar generation at underused roofs of logistics and other facilities by March 2028. The equipment-leasing model will supply on-site and surplus off-site renewable power to offices, commercial facilities and hotels across the real-estate fund portfolio.
Takaoka Toko and e-Mobility Power jointly developed the SERA-400 ultra-fast charger, which began operation at the inbound Ebina Service Area on the Tomei Expressway on September 14, 2026. The site has three rapid chargers with eight outlets and 920 kW of total output; Takaoka Toko installed two units with four outlets and 520 kW of output, including one 400 kW SERA-400 unit.
HARE晴れ has started operating a solar power plant in Kitahiroshima, Hokkaido, developed under an off-site PPA to supply renewable electricity to 14 Skylark Holdings-owned and operated restaurants. The facility has approximately 360 kW of output and expected annual generation of approximately 490,000 kWh, reducing CO2 emissions by about 250 tonnes annually.
GS Yuasa will develop a new manufacturing plant for stationary energy storage systems in Ibaraki Prefecture under its Ministry of Economy, Trade and Industry-approved battery supply security plan. The facility is scheduled to begin supply in October 2028, with production spanning domestically made lithium-ion battery cells through control systems.
Kansai Electric has begun commercial operation of the Borkum Riffgrund 3 offshore wind power project in Germany, in which it participates alongside Gremont Partners and other investors. The offshore facility comprises 83 wind turbines located approximately 70 km from the coast, with total capacity of 913 MW.
Reene Energy and Appletree will jointly develop a grid-connected battery storage facility in Kakegawa, Shizuoka, to store surplus renewable electricity and discharge it during evening demand peaks. Reene Energy will own and operate the facility, while Appletree will provide EPC services; construction is scheduled to start in October 2026, with operations targeted during FY2027.
Kyushu Electric Power has submitted a project-stage environmental consideration document for the planned new Shimousen-Matsubara pumped-storage hydroelectric power station. The submission marks an early planning and environmental-assessment stage; investment cost, capacity and construction schedule were not disclosed in the source.
Kokusai Kogyo, which owns and operates the facilities under an on-site PPA contract with Muko City, completed solar power generation systems designed and installed by SYLA Solar at Muko Municipal Dairoku Koyo Elementary School and Muko Municipal Nishinooka Junior High School in Kyoto. Construction ran from January 19 to February 28, 2026; the project provides renewable electricity and emergency power during outages.
Kawasaki Heavy Industries has begun construction of a steam methane reforming hydrogen production facility in the coastal area of Kawasaki, Kanagawa. Scheduled for completion in spring 2029, the plant will produce approximately 18 tonnes of high-purity hydrogen per day from city gas and supply it via a high-pressure hydrogen pipeline to the Kawasaki LH2 Terminal as part of a commercial liquefied-hydrogen supply-chain demonstration.
Tsuruya has begun operating a solar power facility at its Agui Plant in Aichi under an on-site power purchase agreement with Toenec and Sumitomo Mitsui Trust Panasonic Finance. The facility began operation on August 1, 2026, with 1,120.9 kW of installed capacity and expected annual generation of 1,414 MWh.
PT Mulya Energi Lestari has started commercial operation of its 3.4 MW run-of-river Pungga small hydropower plant in North Sumatra, Indonesia. The facility supplies renewable electricity to Indonesia's state-owned utility PLN under a long-term power purchase agreement and is expected to reduce greenhouse-gas emissions by 8,863 tCO2 annually; EnBio Holdings participates through its jointly managed investment vehicle Alamport Renewables.
Local Energy System, backed by Kumagai Gumi, Kiyomoto Iron Works and Shinsho Corporation, completed a black bark pellet manufacturing plant in Saijo, Ehime. The plant uses bark from sawmills to produce wood pellets and thermally processes them into black bark pellets for power-generation and industrial applications; trial operations will continue through September 2026, with commercial operations planned from October 2026.
Intellect is responsible for the design and construction of the Togusa Solar Power Plant in Kikuyo, Kumamoto. A safety prayer ceremony was held on July 3, 2026, marking the start of construction; the project's capacity and investment amount were not disclosed.
Arata installed a self-consumption solar power generation system under a power purchase agreement at its Kyushu South Center logistics facility in Kagoshima. The system began operating in February 2026, with planned annual generation of 603,707 kWh and surplus electricity supplied to the surrounding area as CO2-free power.
Dynapac installed an owner-operated rooftop solar power system at Toki Dynapac in Toki, Gifu, which began operation on July 10, 2026. The 215-panel system has 100 kW output and is expected to generate approximately 100,000 kWh annually, covering about 4% of the facility's electricity demand.
Yakult Honsha will introduce solar power generation at its Philippines Yakult No. 2 factory to promote decarbonization. The project is the Yakult Group's first initiative to use Japan's Joint Crediting Mechanism (JCM).
Hokkaido Electric Power has filed the construction plan for Unit 2 of the Ishikariwan Shinko Power Station and considers the project started under Japan's Electricity Business Act. Building construction and installation of power-generation equipment will proceed, with commercial operation targeted for fiscal 2030.
Hankyu Hanshin Properties will begin using renewable electricity generated by newly developed solar power facilities to supply three properties it operates in Osaka Umeda from late August 2026. The solar plants will be opened progressively, reaching a combined generation capacity of 10 MW by the end of FY2027, with expected annual generation of approximately 19 million kWh.
Kansai Electric Power started commercial operation of the Kotori River Power Station, a 510kW run-of-river hydro plant in Hida, Gifu, that uses maintained flow from the Shimo-Kotori Dam on the Jinzu River system. Construction began in November 2019; the disclosure does not state the investment amount.
Green Energy & Company's wholly owned subsidiary Green Energy Plus has received an additional construction order from eREX for a grid-scale battery storage facility in Kameoka, Kyoto. The facility is designed to stabilize regional power supply and demand as renewable-energy generation expands, with a rated output of 1,999 kW and nominal capacity of 8,147 kWh.
Tamagawa Holdings' subsidiary Tamagawa Energy will acquire the site and development rights for a grid-scale battery storage facility in Iga, Mie, from Green Energy Plus. The project is planned for grid connection in September 2027 and will have a rated output of 1,999 kW and nominal capacity of 8,000 kWh; total development cost is ¥570 million excluding tax.
Miralita is raising funds for Phase II of a grid-scale battery storage project in Yahatanishi Ward, Kitakyushu, Fukuoka. Funding will cover the acquisition of project rights and the procurement, installation and construction of battery equipment; the completed facility and rights are planned for lump-sum sale to a corporate end user after approximately 10 months of operation.
CULTA will establish new research and development facilities in Kashiwa, Chiba, and Tsukuba, Ibaraki, focused on climate-adapted crop breeding, cultivation technology and stable seedling supply. The facilities will include sunlight-powered and artificial-light plant factories, laboratories, cultivation research greenhouses and a nursery building, with operations scheduled to begin sequentially from September 2026.
INTELLECT will develop a grid-scale battery storage facility in Kumamoto City's Kita Ward, using land owned by the BLD WEDDINGS group. The facility is planned to have approximately 2 MW of rated output and 8 MWh of storage capacity, with operations scheduled to begin in June 2027; INTELLECT will provide development, EPC and O&M services.
PowerX plans to begin mass production of its Mega Power 4000 battery systems in May 2027. The liquid-cooled LFP units provide up to 4,680 kWh per 20-foot container. In an August 13 production-plan update, the company added the series to the product mix of its Tamano headquarters factory and planned Tomakomai factory. The additional Tamano production line remains scheduled for January 2027, while the Tomakomai factory is now scheduled to open in July 2028. Planned annual capacity is 800 systems at each factory, across the stated product mix; this is not a capacity figure exclusively for Mega Power 4000.
Eku Energy Japan has completed delivery and installation of the major equipment, including 32 Tesla Megapack 2 XL battery systems, at the Hirohara Battery Storage Facility in Miyazaki, Miyazaki. Construction, equipment connection work and testing will continue toward planned operation in January 2027; Tokyo Gas will operate the facility under a 20-year offtake agreement.
Tokyu Land and Saitama Fukko developed and completed the ReENE Solar Farm Kumagaya agrivoltaic power plant in Kumagaya, Saitama, with operations beginning on April 1, 2026. The facility consolidates 35 agricultural parcels covering approximately 4 hectares, grows wheat beneath elevated solar panels, and supplies electricity to Tokyu Land-owned offices and commercial facilities through an off-site PPA.
Daiwa Energy, a subsidiary of Daiwa House Industry, completed its largest-ever repowering project at the DREAM Solar Hyogo Toyooka solar power plant in Toyooka, Hyogo. The project replaced the existing solar panels and power conditioners, with first-year planned generation and electricity-sale revenue expected to increase by up to approximately 40%.
Mitsubishi Chemical has begun using electricity from a floating solar power facility installed at the regulating pond of its Hiroshima plant under an onsite power purchase agreement. Kyowalak Co., Ltd. installed, owns and operates the facility, which supplies part of the site's electricity without using the external transmission grid.
TAOKE ENERGY completed grid interconnection on July 31, 2026 for a new high-voltage battery storage facility in Mutsurecho, Tahara, Aichi. The facility has a rated output of 2 MW and storage capacity of 8.14 MWh, and is scheduled to enter Japan's primary reserve market in October 2026.
RENOVA's project company R.Six Energy Storage LLC signed a project financing agreement with Mizuho Bank for a 99.9 MW / 280 MWh grid-scale battery storage facility in Ukari, Fukuroi, Shizuoka Prefecture. The loan is about JPY7.2 billion; the total project cost is not disclosed. Construction is scheduled for FY2026 with commercial operation in FY2029. It is RENOVA's second storage project to reach project financing, taking its operating and under-construction storage capacity to 452 MW.
Seal Engineering, a subsidiary of listed Remix Point (3825), has developed a grid-scale battery storage facility in Ogano, Chichibu District, Saitama, which partner Fit Founder has sold to a customer company. The 2MW/8MWh facility is planned to begin operation in January 2027 and will support renewable energy integration and grid stability in Japan's energy transition.
Tokyu Real Estate is planning a wind power generation project in the Atsuta district of Ishikari City, Hokkaido, with a planned output of up to 64,500 kW. The project is undergoing statutory environmental impact assessment; the preparation document (junbisho) was published in March 2026 and a public hearing was held on July 31, 2026.
Hokkaido Electric Power says it aims to complete the Tomari Nuclear Power Station seawall in August 2027. Construction began on March 28, 2024. The tsunami-protection structure is designed to reach 19.0 m above sea level and extend approximately 1,200 m. The company disclosed an approximate total construction cost of ¥180 billion, comprising ¥70 billion of preparation work and ¥110 billion of installation work, and said the effect of the revised schedule on cost remains under review.
J-Holdings's consolidated subsidiary J-Crest will acquire a grid-scale battery energy storage facility (Shokawa ESS) located in Takayama, Gifu Prefecture from Recharge Power as part of a capital and business partnership to expand the grid-scale battery storage business. The 2MW/8MWh facility is planned to be completed and grid-connected in December 2026, with operational commencement and market participation expected in early 2027.
Nippon Chikudenchi has completed construction of NC Toyooka Tajio Energy Storage Station, a 1,988 kW / 8,146 kWh grid-scale battery facility in Hyogo Prefecture. The facility began operation on 24 July 2026 and supports renewable energy integration, grid balancing, and disaster resilience through participation in wholesale electricity markets and capacity markets.
Nippon Parking Development and subsidiary Smart Green Energy completed Japan's first woody biomass power plant built on a former ski resort site in Katashina village, Gunma Prefecture. The facility, commissioned July 20, 2026, will supply electricity generated from local wood waste primarily to municipal public facilities, demonstrating a regional energy circulation and decarbonization model combining renewable energy with rural regeneration.
Nomura Real Estate began a demonstration project for agrivoltaic (farm-based) solar power generation on approximately 3,515 sqm of farmland in Kawajima, Saitama Prefecture, using sun-tracking solar panels installed above crops. The trial, part of the company's new Infrastructure & Industry business unit launched in FY2026, aims to diversify renewable energy procurement and will run for about three years starting July 2026, generating roughly 80MWh/year.
Hexa Energy Service, a Japan-based unit of I Squared Capital, has signed a 20-year long-term offtake agreement with Tokyo Gas for a grid-scale battery storage facility it is developing in Fukushima Prefecture. Hexa will develop, own and maintain the facility while Tokyo Gas will operate it, trading in electricity markets; commercial operation is planned for FY2029.
Pacific Consultants will begin a demonstration project installing floating photovoltaic systems - including perovskite, thin-film silicon and conventional silicon modules - on a multipurpose dam reservoir in Nagano Prefecture. The project, selected under Japan's Ministry of the Environment FY2026 renewable energy demonstration program, aims to verify technical feasibility for design, construction and maintenance of floating solar on deep, water-level-fluctuating dam reservoirs, with potential future rollout to other multipurpose dams and unused water surfaces such as ports.
Nippon Chikudenchi Co., Ltd. signed a disaster-response agreement with Shirakawa City, Fukushima Prefecture, under which a grid-connected battery storage station it is installing in the city will supply emergency power during disasters. The facility has a planned rated capacity of about 8MWh (8,146kWh), enough to supply roughly 470 households for 72 hours in an emergency; the company plans to bring 70 such storage sites online nationwide by 2028.
Glome Holdings Inc. is bringing online a grid-connected battery energy storage system (BESS) in Toyooka, Hyogo Prefecture, with handover and commercial operation start planned for August 1, 2026. The facility has a maximum receiving power of 1,988kW and connects to the grid of Kansai Electric Power Transmission & Distribution, forming part of the company's entry into the grid-scale battery storage business.
MK Group's taxi operator MK Co. installed Standard Energy's vanadium-ion battery energy storage system (VIB ESS) at its Kyoto headquarters garage to support EV rapid-charging infrastructure, marking the technology's first deployment in Japan. The system, supplied by South Korea's Standard Energy and distributed via LB Hunet with support from Mitsubishi Corp's Korea unit, will undergo a one-year demonstration from July 2026 before a decision on full-scale rollout, aiming to reduce peak electricity demand charges as MK expands its EV taxi fleet toward full ZEV conversion by 2030.
Yokote-Yuzawa Forest Cycle began commercial operation of its 1,980 kW Yokote wood-biomass power plant in Akita Prefecture on June 30, 2026. A completion ceremony followed on July 16. Investor Sanyo Trading said the Yuzawa plant was scheduled to begin operation at the end of October 2026. The venture uses wood sourced in Akita Prefecture for its regional forestry and energy project.
Green Energy Frontier began construction on April 1, 2026 of a new central power substation serving Narita International Airport, the first full renewal of the facility since the airport opened. The new substation will expand receiving capacity by about 1.5x to accommodate future demand from Narita's runway expansion and terminal reconstruction project, and will feature AI-based energy demand forecasting and space for the company's headquarters relocation; completion is planned for FY2028.
Power X Inc. will open a new plant, 'Power Base Hokkaido,' in Tomakomai, Hokkaido, to produce large-scale grid storage battery systems, supporting renewable energy adoption in Hokkaido and Tohoku. The facility will convert an existing building and start production of the 'Mega Power 2500' container-type battery system in June 2027, with total project cost of JPY 3 billion.
Waita Dai-2 Chinetsu Hatsuden, backed by Furusato Netsuden, began commercial operation of the Waita No.2 Geothermal Power Plant in Oguni, Kumamoto Prefecture, built in partnership with the local Waita community. The plant has a capacity of 4,995 kW and is expected to generate about 35 million kWh annually, enough for roughly 8,950 households; Tokyo Gas Engineering Solutions served as EPC contractor.
RemixPoint Inc. has completed grid interconnection of its 'NC Shirakawa Hyogo Bansawa' grid-scale battery storage facility in Fukushima Prefecture (1,998kW / 8,146kWh, using CATL batteries and TMEIC power conditioning systems) and started operating it in Japan's balancing (demand-supply adjustment) market as of July 17, 2026. This is the company's second facility to enter the balancing market, part of a mid-term plan to develop 32 grid-scale storage sites by FY2029, with over 20 to be company-owned.
Green Battery Co., Ltd. has begun construction of a 2MW/8MWh grid-connected battery storage facility in Otsuki City, Yamanashi Prefecture, aimed at providing balancing capacity for the power grid amid growing renewable energy adoption. The facility is expected to begin operations in August 2026, participating in Japan's balancing, wholesale, and capacity markets.
Syla Holdings' subsidiary Syla Solar resolved to acquire land and a grid-connected battery storage facility in Oyama City, Tochigi Prefecture, with 2MW receiving capacity and 8MWh storage capacity. The purchase price is undisclosed but confirmed to be less than 30% of the company's consolidated net assets as of FY2026/5. Contract signing is planned for July 17, 2026, with settlement and delivery expected November 1, 2026.
G-Birdman announced the acquisition of fixed assets related to a grid-connected battery storage system. Details on investment amount, location, and timeline were not disclosed in the available notice.
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