What Renewable Japan does

Renewable Japan, legally known as ReENE Energy Corporation (株式会社リエネ・エナジー), is a Tokyo-headquartered renewable energy platform operating as a subsidiary of Tokyu Fudosan Holdings. Founded in 2012 and employing 251-500 staff, the company develops, owns, and operates utility-scale power generation assets across three core technologies: solar photovoltaic (太陽光発電), wind (風力発電), and hydroelectric (水力発電) generation. Beyond asset ownership, it has expanded into battery energy storage (蓄電所事業), secondary-market solar plant acquisition (太陽光発電所買取), and operates wholly-owned branded operating entities including ReENE SOLAR FARMS HIGASHIMATSUYAMA and ReENE WIND FARMS MATSUMAE.

The company's revenue model combines four streams: power generation sales to utilities and through retail operations, recurring O&M and asset management services, subscription-based retail electricity supply under the ReENE Denki (リエネでんき) brand, and transactional fees from secondary-market solar plant purchases. A proprietary remote monitoring system called mielooop (ミエルループ) supports asset performance management across the portfolio. The April 2026 launch of the Tokyu Fudosan Holdings 'Renewable Energy Procurement One-Stop Service' (再エネ調達ワンストップサービス) integrates power plant development, transfer, O&M, and retail electricity supply into a unified corporate decarbonization offering.

Customer segments split between primary enterprise and corporate customers pursuing carbon neutrality and renewable procurement, and secondary residential consumers served via the ReENE Denki retail electricity brand. All operations are concentrated in Japan, with no international footprint. Strategic capital backing has historically come from Mitsubishi UFJ Capital, Hitachi Capital Trust, Barclays Global Investors, Tokyu Land, and Kansai Electric Power, with cumulative disclosed funding exceeding $190 million between 2015 and 2020.

Name

Renewable Japan

Legal name

ReENE ENERGY Corporation

Website

https://rn-j.com

Company type

Private

Founded year

2012

Operating status

Operating

Headcount range

251–500 employees

Short description

Renewable Japan (ReENE Energy Corporation) is a Tokyo-based renewable energy platform and Tokyu Fudosan Holdings subsidiary that develops, owns, and operates solar, wind, hydro, and battery storage assets across Japan while supplying retail electricity to residential and corporate customers.

Ownership category

akta.pro rank

Product category

Renewable Energy Generation

NAICS

Electric Power Generation (22111), Wind Electric Power Generation (221115), Solar Electric Power Generation (221114), Hydroelectric Power Generation (221111)

SIC

Cogeneration Services & Small Power Producers (4991)

akta.pro primary industry

Renewable Energy Infrastructure (FSAAAKAG)

akta.pro secondary industries

Renewable Energy Asset O&M (Wind, Solar, Hydro, Geothermal) (EUAEAGAB), Distributed & Commercial Renewable O&M (Rooftop Solar, C&I Wind, Small Hydro) (EUAMAGAB)

Keywords

• Renewable energy generation
• Solar power development
• Wind power operations
• Electricity retail services
• Power plant maintenance

Headquarters

HQ city

Tokyo

HQ country

Japan

HQ region

Asia

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

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

Revenue model

1. Power Generation Sales: Revenue from operating solar, wind, and hydroelectric power generation facilities. Generated electricity is sold to utilities and through retail electricity operations.
2. O&M Services: Operations and maintenance services for renewable energy power plants, including asset management and monitoring.
3. Retail Electricity Sales: Direct electricity sales to end consumers under the ReENE Denki (リエネでんき) brand.
4. Power Plant Acquisition and Resale: Purchase and resale of operating solar power plants in the secondary market.

Distribution channels3 records

Marketing channels2 records

Core offering

Renewable Japan (ReENE Energy Corporation) develops, owns, and operates solar, wind, and hydroelectric power generation plants across Japan, and provides operations & maintenance services supported by its proprietary mielooop remote monitoring system. The company also sells renewable electricity directly to households and businesses under the ReENE Denki retail brand, acquires and resells operating solar power plants in the secondary market, and operates battery energy storage assets.

Product overview

ReENE Energy Corporation is a comprehensive renewable energy platform that develops, operates, and manages power generation assets across three core technologies: solar (太陽光発電), wind (風力発電), and hydropower (水力発電). The company operates a platform-plus-services model consisting of power generation asset development (as self-owned operational plants or for sale), combined with O&M services featuring the proprietary remote monitoring system 'mielooop', and a retail electricity business under the 'ReENE Denki' brand. Additional services include battery energy storage (蓄電所事業), solar power plant acquisition (太陽光発電所買取), and business land recruitment for new project development.

Differentiator

Problem solved

Functional benefit

Brands

• ReENE (リエネ): Main brand for renewable energy power generation and retail electricity services, including solar, wind, and hydroelectric power generation, O&M services, and remote monitoring systems.
• リエネでんき
• ReENE SOLAR FARMS
• ReENE WIND FARMS
• mielooop (ミエルクール)

Products and services

• Solar Power Generation (太陽光発電) Development and operation of solar power generation plants using photovoltaic systems to supply renewable electricity. A core business line within the company's renewable energy portfolio.
• Wind Power Generation (風力発電) Development and operation of wind power generation facilities that harness wind resources to produce sustainable electricity for sale.
• Hydropower Generation (水力発電) Development and operation of hydroelectric power generation systems utilizing water resources to produce clean, renewable electricity.
• O&M Services (Operations & Maintenance Services) Asset management and operational maintenance services for power generation facilities, ensuring optimal performance and longevity of renewable energy assets for asset owners.
• mielooop Remote Monitoring System (遠隔監視システム) Proprietary remote monitoring service for renewable energy power generation facilities, enabling real-time surveillance, performance tracking, and asset management of distributed power generation assets.
• Retail Electricity Business (ReENE Denki / 小売電気事業) Retail electricity sales service supplying renewable energy power directly to end consumers, marketed under the ReENE Denki (リエネでんき) brand for households and small businesses.
• Solar Power Plant Acquisition (太陽光発電所買取) Purchase service for existing operating solar power generation plants, enabling secondary-market transactions for sellers of operational renewable energy assets.
• Battery Energy Storage Business (蓄電所事業) Battery energy storage system business supporting grid stability and enabling efficient use of renewable energy through storage solutions paired with generation assets.

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Partnerships

Five partnerships are on record, tiered core.

• とうぎんリニューアブル・エナジー (Togin Renewable Energy)coreStrategic or Co-development Partner · 22 May 2026Partnership for renewable energy power generation. ReENE Energy collaborates with Togin Renewable Energy to create renewable electricity, as announced in May 2026.
• ReENE (tokyu-reene.com)coreStrategic or Co-development PartnerRelated entity within the Tokyu renewable energy ecosystem, sharing the ReENE brand for solar farms and wind farms operations.
• ReEN株式会社 (reene.co.jp)coreStrategic or Co-development PartnerRelated company within the ReENE group network, part of the broader Tokyu renewable energy platform.
• ReENE SOLAR FARMS HIGASHIMATSUYAMA (solrfarm.jp)coreStrategic or Co-development PartnerSolar farm operation entity, part of the ReENE brand portfolio for power generation assets.
• ReENE WIND FARMS MATSUMAE (windfarmmatsumae.com)coreStrategic or Co-development PartnerWind farm operation entity in Matsumae, part of the ReENE brand portfolio for renewable power generation.

Scale indicators1 record

Recent moves4 records

Expansion highlights3 records

Broad incumbents

• Marubeni Corporation: Diversified Japanese trading house with a significant renewable energy IPP business globally and in Japan. Overlaps as a large-scale renewable asset owner and corporate PPA supplier in the Japanese market.
• Tokyo Century Corporation: Major Japanese leasing and finance company with a renewable energy investment and asset management business. Comparable as a capital partner and operator in renewable power assets in Japan.
• Tokyo Gas Co., Ltd. Major Japanese integrated energy utility with growing renewable energy generation and retail electricity operations. Comparable as a domestic multi-energy incumbent competing in retail electricity and corporate decarbonization supply.
• Chubu Electric Power Co., Inc. Major Japanese regional electric utility expanding renewable generation capacity and competing in the deregulated retail electricity market. Comparable as an incumbent utility participating in renewables and retail supply.

Direct peers

• RENOVA, Inc. Japanese renewable energy developer and operator with solar, wind, biomass, and geothermal assets. Directly comparable multi-technology renewable IPP with similar corporate PPA focus in the Japanese market.
• Japan Renewable Energy Co., Ltd. (Nippon Renewable Energy): Specializes in renewable energy power generation, primarily solar, with O&M services. A close direct peer for utility-scale and distributed renewable generation and asset management in Japan.
• Looop Inc. Japanese renewable energy retailer and solar IPP with retail electricity brand (Looop Denki). Directly comparable as a renewable-focused retailer competing head-to-head with ReENE Denki in the Japanese retail electricity market.
• Japan Wind Development Co., Ltd. (JWDC): Japanese wind power developer and operator with utility-scale wind generation assets. Comparable as a domestic renewable IPP with a wind-focused asset portfolio serving similar customers.
• SoftBank Energy (SB Energy Corp.): Japanese renewable energy IPP focused on solar and wind power plant development, ownership, and operation. Directly comparable as a multi-technology renewable generator with corporate PPA business serving Japanese enterprises.

Others

• Hitachi Zosen Inova (HZI) / Renewable Energy Asset Operators: Engineering and asset operations provider adjacent to renewable power generation. Relevant as a peer in the O&M/asset management value chain that competes for technical services on similar renewable assets.

Market position

Strengths1 record

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries3 records

Funding overview

Funding rounds6 records

Investors5 records

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 Renewable Japan