Yachiyo Green Energy

What Yachiyo Green Energy does

Yachiyo Green Energy Co., Ltd. (八千代グリーンエナジー株式会社) is a Japanese renewable energy developer and power business operator, established on November 28, 2013, as a wholly-owned subsidiary of Yachiyo Engineering Co., Ltd. The company operates across five integrated business pillars: (1) development and operation of company-owned renewable energy power plants (primarily solar, with hydro and biomass references) sold to utilities under Japan's Feed-in Tariff (FIT) scheme; (2) the UDA (User-Driven Alliance) model that brokers demand-driven renewable procurement via long-term power purchase agreements, on-site PPAs, and FIP (Feed-in Premium) bilateral transactions; (3) property and asset management services for renewable energy portfolios, pursuing ISO 55000 certification; (4) grid-scale battery energy storage system (BESS) project development and operation; and (5) Energy Resource Aggregation using IoT to integrate distributed solar, biomass, hydro, battery, and EV assets for autonomous regional operation including disaster response. As of mid-2024, three solar plants were operational across Fukushima (2,172kW, since November 2014), Gunma/Ota (2,100kW across six sites, since March 2021), and Kagoshima/Satsumasendai (663kW, since October 2020), totaling approximately 4,935kW of panel capacity and roughly 5.4 million kWh of annual generation. The company is private, headquartered in Asakusabashi, Taito-ku, Tokyo, with registered capital of ¥450 million JPY following a January 2024 increase.

Underlying technology comprises owned generation assets, 2MW/8MWh high-voltage BESS units planned at Kuwana and Toyohashi, and an IoT-based aggregation platform for distributed energy resources. The proprietary UDA Model and the aggregation platform are the two named technical differentiators versus a standard FIT-only developer. The company is engineered, staffed via secondment, and go-to-market supported by its parent Yachiyo Engineering, which also provides project development infrastructure and Japanese utility-side relationships.

The company generates revenue through multiple streams: selling electricity to utilities under FIT and FIP frameworks, structuring long-term PPAs and bilateral transactions with corporate offtakers (including a power supply contract with Toyota Tsusho via the YTS-Solar joint venture with Eurus Energy), earning recurring asset management fees from renewable asset owners, and (prospectively from late 2026) BESS capacity, ancillary services, and arbitrage revenue. Go-to-market is direct B2B enterprise sales backed by EPC partner relationships (notably Sun Village Co., Ltd.) and partnership channels. Pricing is custom-quote based and not publicly disclosed. The company does not maintain a mobile app, public API, or disclosed AI/ML capabilities, and distributes domestically only within Japan.

Name

Yachiyo Green Energy

Legal name

八千代グリーンエナジー株式会社 (Yachiyo Green Energy Co., Ltd.)

Website

https://yge.co.jp

Company type

Private

Founded year

2013

Operating status

Operating

Short description

Yachiyo Green Energy Co., Ltd. is a Tokyo-based Japanese renewable energy developer and operator, wholly owned by Yachiyo Engineering. It develops and operates solar power plants, grid-scale battery storage, UDA-model renewable PPAs, and asset management services for utilities and corporate offtakers across Japan.

Ownership category

akta.pro rank

Product category

Renewable Energy Power Generation

NAICS

Solar Electric Power Generation (221114), Electric Power Generation (22111)

SIC

Electric Services (4911), Cogeneration Services & Small Power Producers (4991)

akta.pro primary industry

Utility-Scale BESS Project Development & Ownership (IPP/Developer) (EUAFAAAA)

akta.pro secondary industries

Energy Storage & Microgrid Electrical Infrastructure (BESS, Controls) (IMAFAHAE), Microgrid Development, EPC & Integration (EUAMAJAB), Utility-Scale Power Generation Asset Management (EUAEAMAA), Renewable Energy Infrastructure (FSAAAKAG)

Keywords

• Renewable energy generation
• Solar power development
• Battery energy storage
• Power purchase agreements
• Energy resource aggregation

Headquarters

HQ city

Tokyo

HQ country

Japan

HQ region

Asia

Offices6 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Infrastructure, Supply Chain, Personnel, Operations, Technology or R&D, Marketing or Sales

Revenue model

1. Power Generation and Feed-in Tariff (FIT) Sales: Owning and operating solar power generation facilities. Revenue generated by selling electricity under Japan's fixed feed-in tariff (FIT) scheme. The Fukushima Solar Power Station (2,172kW panel output) and other facilities are operated under this model.
2. UDA Model (PPA / FIP Bilateral): Long-term power purchase agreements with corporate or institutional demanders. Revenue is generated through on-site PPA (Power Purchase Agreement) or FIP (Feed-in Premium) bilateral transactions where renewable energy is sold directly to committed buyers.
3. Property Management Services: Asset management and property management services for multiple renewable energy power generation assets. Revenue from management fees aimed at improving asset value, operational efficiency, and stable income for asset owners.
4. BESS (Battery Energy Storage System) Business: Development and operation of grid-scale battery energy storage systems. Revenue generation through capacity markets, ancillary services, and arbitrage opportunities in electricity markets.
5. Power Trading (Electricity and Environmental Value): Sale of electricity and environmental values (RECs, J-Credits) generated from owned power generation facilities under power sales and electricity/environmental value sales business.

Go-to-market motion2 records

Distribution channels4 records

Marketing channels4 records

Core offering

Yachiyo Green Energy develops, owns, and operates renewable energy power generation assets (primarily solar plants in Fukushima, Gunma, and Kagoshima) selling electricity under Japan's FIT scheme, and provides grid-scale Battery Energy Storage System (BESS) projects, demand-driven long-term power purchase agreements via its proprietary UDA model (on-site PPA and FIP bilateral transactions), property/asset management for renewable energy portfolios targeting ISO 55000 certification, and an IoT-based energy resource aggregation platform integrating solar, biomass, hydro, battery storage, and EV charging for autonomous area-level grid operation.

Product overview

Yachiyo Green Energy is a renewable energy developer and power business operator offering five integrated service pillars: (1) self-owned power plant development and operations under the FIT model, (2) the UDA (User-Driven Alliance) model for demand-driven renewable energy deployment including on-site PPA and FIP schemes, (3) property management for renewable energy asset portfolios targeting ISO 55000 certification, (4) Battery Energy Storage System (BESS) grid-scale storage power plant development and operations, and (5) Energy Resource Aggregation business using IoT for integrated control of distributed energy resources (solar, biomass, hydro, batteries, EVs). Key operational assets include the Fukushima Solar Power Plant (2,172kW), the Gunma Ota Solar Power Plants (2,100kW across 6 sites), and the Kagoshima Satsumasendai Solar Power Plant (663kW). The company is 100% owned by Yachiyo Engineering Co., Ltd. and is headquartered in Asakusabashi, Taito-ku, Tokyo.

Differentiator

Problem solved

Functional benefit

Products and services

• Self-Owned Power Plant Development and Operations Development and operation of company-owned renewable energy power plants including solar, hydro, and biomass. Key operational assets include the Fukushima Solar Power Plant (2,172kW), Gunma Ota Solar Power Plants (2,100kW across 6 sites), and Kagoshima Satsumasendai Solar Power Plant (663kW). Electricity is sold under Japan's FIT framework.
• Power UDA Model Business Demand-driven renewable energy procurement service offering long-term power purchase agreements or capital investment commitments, including on-site PPA and FIP (Feed-in Premium) bilateral transactions, with corporate and institutional energy consumers. Also includes hydroelectric power generation projects.
• Property Management Business Asset management and property management services for multiple renewable energy generation assets, extending beyond basic maintenance to asset value enhancement. Aims for ISO 55000 series certification and international-standard asset efficiency optimization through stable operation and revenue generation.
• Battery Energy Storage System (BESS) Business Development and operation of grid-scale Battery Energy Storage System (BESS) power plants. Addresses electricity market price suppression, renewable energy curtailment reduction, and power self-sufficiency for remote islands and depopulated areas. Projects include Kuwana City (2MW/8MWh, planned operation October 2026) and Toyohashi City (planned completion November–December 2026).
• Energy Resource Aggregation Business IoT-based aggregation and integrated control of distributed energy resources including solar, biomass, hydroelectric generation, battery storage, and electric vehicles (EVs). Builds and operates an autonomous energy platform for disaster-resilient, self-sufficient area operations.
• Yachiyo Green Energy Fukushima Solar Power Plant Solar power plant in Fukushima Industrial Park with panel output of 2,172kW across 33,120m² of land. Annual generation approximately 2,080,000kWh. Total project cost approximately 800 million yen.
• Yachiyo Green Energy Ota City Power Plant Six solar power generation facilities in Ota City, Gunma Prefecture, with combined installed capacity of 2,100kW across 22,702m² of land. Annual generation approximately 2,572,905kWh. Total project cost approximately 520 million yen.
• Yachiyo Green Energy Satsumasendai Power Plant Solar power plant in Satsumasendai City, Kagoshima Prefecture, with installed capacity of 663kW. Annual generation approximately 753,101kWh. Total project cost approximately 150 million yen.

Quantifiable outcome

• ~5.4 million kWh/year clean electricity generated across all operating solar power stations, displacing approximately 2,700 tonnes of CO2 annually (estimated)
• +1 more outcomes

Named customers1 record

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Four partnerships are on record, tiered core.

• ユーラスエナジー (Eurus Energy Corporation)coreStrategic or Co-development Partner · 19 January 2026Yachiyo Green Energy and Eurus Energy jointly established YTS-Solar LLC (合同会社) for bulk high-voltage solar power generation project development. The joint venture has signed a power supply contract with Toyota Tsusho Corporation for the electricity output from these projects.
• 豊田通商株式会社 (Toyota Tsusho Corporation)coreChannel Partner/ Reseller/ Distributor · 19 January 2026Toyota Tsusho Corporation signed a power supply (purchasing) contract with YTS-Solar LLC (joint venture between Yachiyo Green Energy and Eurus Energy) for the bulk-developed high-voltage solar power generation project. Toyota Tsusho acts as the offtaker/purchaser of electricity from the project.
• 株式会社サンヴィレッジ (Sun Village Co., Ltd.)coreImplementation/ SI/ Consulting Partner · 18 December 2025Sun Village Co., Ltd. (CEO: Mimura Tsuguji) serves as the engineering procurement and construction contractor for Yachiyo Green Energy's grid-scale battery energy storage system (BESS) projects. A construction contract was signed for the Kuwana City (Mie Prefecture) BESS facility (2MW/8MWh, planned operation October 2026). This partnership was expanded to include the Toyohashi City (Aichi Prefecture) BESS facility as the second joint project.
• 八千代エンジニヤリング株式会社 (Yachiyo Engineering Co., Ltd.)coreOthersYachiyo Green Energy is a 100% owned subsidiary of Yachiyo Engineering Co., Ltd. (YEC). YEC founded the company in November 2013 with 10 million JPY capital and continues to provide engineering expertise, corporate governance, and operational support. Employees are seconded from Yachiyo Engineering to Yachiyo Green Energy.

Scale indicators5 records

Recent moves7 records

Expansion highlights6 records

Broad incumbents

• Kyocera Corporation: Japanese electronics/energy conglomerate with a large solar module business and renewable IPP activities. Comparable as a vertically integrated player participating in Japan's solar generation market, though much broader in scope.
• Tokyo Electric Power Company (TEPCO Renewable Power): Largest Japanese utility with significant renewable energy development and asset management activities. Comparable in operating renewable generation portfolios and engaging in similar grid-scale BESS and corporate renewable procurement themes.
• Chubu Electric Power Co., Inc. Major Japanese utility whose grid service territory includes Yachiyo Green Energy's Kuwana and Toyohashi BESS project sites. Comparable as a counterparty and potential off-taker, and representative of the utility incumbents the company serves via BESS and FIT.
• Sumitomo Corporation Power & Mobility: Major Japanese trading house active in renewable energy development, storage, and corporate PPA intermediation. Comparable as a diversified commercial counterparty for renewable offtake and project finance in Japan.
• Solar Frontier (ENEOS Renewable Energy): Major Japanese solar power company (now under ENEOS) covering module manufacturing through project development and operations. Broader portfolio scope than Yachiyo Green Energy, but highly comparable in utility-scale solar project activity in Japan.

Direct peers

• SB Energy Corp. SoftBank Group's renewable energy arm developing large-scale solar and battery storage in Japan. Comparable as a Japanese utility-scale solar + storage developer pursuing similar customer segments.
• Pacifico Energy: Japanese solar and renewable energy IPP developing, owning, and operating utility-scale projects across Japan. Closely comparable business model of asset ownership, FIT revenue, and corporate PPA offerings.
• Shizen Energy Inc. Japanese renewable energy IPP active in solar, wind, and biomass, with an in-house energy services platform and corporate PPA business. Comparable as a vertically integrated renewable developer with platform-style offerings.
• RENOVA, Inc. Listed Japanese renewable energy IPP focused on solar, wind, biomass, and geothermal with a similar portfolio approach. Comparable scale and asset-ownership model with FIT/FIP revenue streams.
• Eurus Energy Corporation: A leading Japanese renewable energy IPP/developer (wind + solar) and Yachiyo Green Energy's joint venture partner in YTS-Solar LLC. Directly comparable as a Japan-focused utility-scale renewable developer with similar BESS and corporate PPA activities.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Yachiyo Green Energy