Green Power Investment

What Green Power Investment does

Green Power Investment Corporation is a Japanese renewable energy developer that develops, constructs, and operates utility-scale wind and solar power generation facilities across Japan. The company operates Japan's largest onshore wind farm (Wind Farm Tsugaru, 121.6MW in Aomori Prefecture, commercial since April 2020) and Japan's first commercial offshore wind farm with battery storage (Ishikari Bay New Port, 112MW in Hokkaido, commercial since January 2024). Additional operating assets include Sumita-Tono (113.4MW, Iwate), Fukaura (79.8MW, Aomori), Odoyama (33MW, Kochi), and solar plants in Chiba and Shimane Prefectures, with an aggregated operational capacity exceeding 460MW and a development pipeline of over 1GW including the planned 480MW Tsugaru Offshore project. Technology centers on large-scale onshore and offshore wind turbines from GE Vernova, Siemens Gamesa, and Vestas, with offshore projects featuring 8MW-class turbines on jacket foundations and integrated battery storage systems.

The business model is anchored in Japan's fixed feed-in tariff (FIT) regime: all generated electricity is sold under 20-year power purchase agreements to regional electric utilities including Hokkaido Electric Power Network and Tohoku Electric Power Network, providing long-duration recurring revenue. Each project is typically held through a dedicated special purpose company (SPC) financed via project finance structures with consortiums of major Japanese banks (MUFG, SMBC, Mizuho, DBJ) and international institutions (Societe Generale), with tens-of-billions-of-yen facilities and 18-19 year tenors. Since March 2024, subsidiary Green Power Retail (GPR) holds retail electricity operator registration, enabling direct B2B sales including to data center operators (KCCS agreement, April 2024). Ownership rests with NTT Anode Energy and JERA following the August 2023 transfer from US-based Pattern Energy Group LP, with GPI operating as a privately-held corporation headquartered in Minato-ku, Tokyo.

GPI's competitive position rests on early-mover status in Japan's offshore wind sector, an established fishery coexistence model developed over 17+ years, and proprietary technology initiatives including SAMRAI satellite-based wind mapping developed with JAXA. The company's strategic significance is reinforced by multiple international project finance awards (PFI 2022, IJGlobal APAC 2022), Japan's Reiwa 7 New Energy Award from the Agency for Natural Resources and Energy, and recent selection under the Renewable Energy Sea Area Utilization Act for offshore wind development in Aomori Prefecture.

Name

Green Power Investment

Legal name

株式会社グリーンパワーインベストメント

Website

https://greenpower.co.jp

Company type

Private

Founded year

2016

Operating status

Operating

Headcount range

51–100 employees

Short description

Green Power Investment Corporation is a Japanese renewable energy developer that develops, constructs, and operates utility-scale onshore and offshore wind and solar power facilities across Japan, selling electricity under 20-year feed-in tariff contracts to regional electric utilities.

Ownership category

akta.pro rank

Product category

Renewable Energy / Wind Power Generation

NAICS

Wind Electric Power Generation (221115)

SIC

Electric Services (4911)

akta.pro primary industry

Wind Farm Ownership & Operations (IPP/Utility-Owned Asset Operations) (EUACAFAF)

akta.pro secondary industries

Wind Farm Development & Permitting (Greenfield/Brownfield) (EUACAFAE), Onshore Wind Power Generation (Utility-Scale) (EUACAFAA), Hybrid Wind Power Plants (Wind+Solar+Storage Co-located) (EUACAFAH), Green Power Retailing & Bundled Supply (Energy + Certificates) (EUAGAFAE), Renewable Energy Infrastructure (FSAAAKAG)

Keywords

• Wind power generation
• Solar power generation
• Renewable energy development
• Offshore wind projects
• Electricity retail sales

Headquarters

HQ city

Minato

HQ country

Japan

HQ region

Asia

Offices6 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Renewable Energy Feed-in Tariff Sales: Long-term power purchase agreements with regional electric utilities (Hokkaido Electric Power Network, Tohoku Electric Power Network) under Japan's fixed feed-in tariff (FIT) system. Projects operate under 20-year contract terms, selling all generated electricity to utilities. Additional revenue potential through retail electricity sales via subsidiary Green Power Retailing (GPR).
2. Power Retail (GPR): Subsidiary合同会社グリーンパワーリテイリング (GPR) holds retail electricity operator registration, enabling GPI to sell electricity directly to end consumers in regions where GPI operates generation facilities, promoting local energy consumption.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

Green Power Investment develops, constructs, and operates utility-scale onshore wind farms, offshore wind farms, and solar power plants across Japan with a combined operating capacity exceeding 500 MW. It sells generated electricity to regional electric utilities under Japan's 20-year fixed feed-in tariff (FIT) system, and has expanded into retail electricity sales through its subsidiary Green Power Retailing (GPR) to promote local renewable energy consumption.

Product overview

Green Power Investment Corporation develops, constructs, and operates renewable energy power generation facilities across Japan. The company's core portfolio consists of onshore and offshore wind farms (如нд Farm Tsugaru, Ishikari Bay Offshore, Sumita-Tono, Fukaura, Odoyama) and solar power plants (Futtsu, Kino), with a combined capacity exceeding 500MW in operation. The company also operates Green Power Retail (GPR), a subsidiary providing retail electricity sales to local consumers, enabling local energy self-sufficiency. Projects range from Japan's largest onshore wind farm (121,600kW) to pioneering offshore wind facilities with battery storage systems.

Differentiator

Problem solved

Functional benefit

Products and services

• Wind Farm Tsugaru (ウィンドファームつがる) Japan's largest onshore wind power plant located in Tsugaru City, Aomori Prefecture, with total output of 121,600 kW from 38 GE wind turbines (3,200 kW each). Electricity is sold to Tohoku Electric Power Network under a 20-year FIT contract. Operational since April 2020, it supplies power equivalent to approximately 90,000 households.
• Ishikari Bay New Port Offshore Wind Power Plant (石狩湾新港洋上風力発電所) Japan's first large-scale commercial offshore wind power plant located in Ishikari Bay New Port, Hokkaido. Total output of 112,000 kW from 14 Siemens Gamesa turbines (8,000 kW each) combined with a 180,000 kWh battery storage system. Electricity is sold to Hokkaido Electric Power Network under a 20-year FIT contract. Operational since January 2024.
• Sumita-Tono Wind Farm (住田遠野ウィンドファーム) Onshore wind farm spanning Iwate Prefecture's Sumita Town and Tono City. Total output of 113,400 kW from 27 Vestas wind turbines (4,200 kW each). Operational since May 2023 with electricity sold to Tohoku Electric Power Network under long-term FIT contracts.
• Green Power Fukaura Wind Power Plant (グリーンパワー深浦風力発電所) Onshore wind power plant in Fukaura Town, Aomori Prefecture, with total output of 79,800 kW from 19 GE Vernova turbines (4,200 kW each). Operational since February 2024 with electricity sold to Tohoku Electric Power Network under long-term FIT contracts.
• Green Power Inaniwa-Takko Wind Power Project (グリーンパワー稲庭田子風力発電事業) Onshore wind power project under construction spanning Ninohe City, Hachimantai City in Iwate Prefecture and Takko Town in Aomori Prefecture. Planned capacity of 100,800 kW with a connected capacity of 94,500 kW. Strategic partnership with Tohoku Electric Power.
• Odoyama Wind Farm (大洞山ウィンドファーム)

Quantifiable outcome

• CO2 reduction of approximately 180,000 tons annually from Wind Farm Tsugaru alone
• +3 more outcomes

Named customers2 records

Segments1 record

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Eleven partnerships are on record, tiered minor, strategic, core and major.

• 名古屋大学 (Nagoya University)minorStrategic or Co-development Partner · 19 May 2026Special lectures delivered by GPI employees for graduate-level course on Renewable Energy and Social Innovation at Nagoya University Graduate School.
• 学校法人立教学院立教大学環境学部 (Rikkyo University Faculty of Environmental Studies)minorStrategic or Co-development Partner · 27 April 2026Educational partnership for cultivating renewable energy and environmental talent. Includes classroom lectures and collaborative research agreements to develop future workforce in the renewable energy sector.
• 国立研究開発法人 海上・港湾・航空技術研究所 港湾空港技術研究所 (PARI)strategicTechnology or Integration · 4 August 2023Research collaboration with PARI on ocean environment data sharing. Joint research on atmospheric and oceanic phenomena data and wind turbine load evaluation to support offshore wind expansion in Japan.
• 前田工繊株式会社 (Maeda Kosen)minorStrategic or Co-development Partner · 10 April 2023Three-party agreement with Tsugaru City for rice straw and husk utilization. Maeda Kosen develops materials from rice husks, with application planned for GPI's Fukaura Wind Power project, supporting decarbonization.
• 国立研究開発法人宇宙航空研究開発機構 (JAXA)strategicTechnology or Integration · 13 March 2023Agreement to evaluate SAMRAI (Scanning Array for hyper-Multispectral Radio wave Imaging) technology for offshore wind applications. Goal is to create Japan's first satellite-based 'wind maps' for offshore wind site selection efficiency.
• 東北電力株式会社 (Tohoku Electric Power)coreStrategic or Co-development Partner · 18 December 2019Strategic partnership covering multiple wind projects including Tsugaru offshore wind (480MW), Fukaura (70MW), and Inaniwa-Takko (100MW). Tohoku Electric provides capital investment and operational support across 1.03 million kW of projects.
• 北海道電力株式会社 (Hokkaido Electric Power)coreStrategic or Co-development Partner · 8 August 2019Strategic partnership for Ishikari Bay offshore wind development. Hokkaido Electric provides technical expertise and regional support while GPI leads development and construction. Partnership aims to expand renewable energy and regional economic development.
• 鹿島建設株式会社 (Kajima Corporation)majorImplementation/ SI/ Consulting PartnerPrimary construction contractor for major projects. Constructed Wind Farm Tsugaru (121.6MW) and serves as onshore construction contractor for Ishikari Bay New Port offshore wind project.
• 清水建設株式会社 / 日鉄エンジニアリング株式会社 (Shimizu Corporation / Nihon Steel Engineering)majorImplementation/ SI/ Consulting PartnerJoint venture for offshore construction of Ishikari Bay New Port project. Shimizu and Nihon Steel Engineering handled the offshore installation work for the 14-unit, 112MW offshore wind farm.
• 石狩湾漁業協同組合 (Ishikari Bay Fisheries Cooperative)coreStrategic or Co-development PartnerCritical partnership for offshore wind coexistence with fisheries. GPI supported the cooperative in obtaining J-Blue Credit certification (2.1t CO2). 17+ years of relationship building since project inception in 2007.
• 株式会社よびもり (Yobimori)minorOthersMaritime safety service provider for Ishikari Bay offshore wind construction and operations. Volunteer marine rescue coordination service helping ensure safety of construction workers, visitors, and local fishermen in the offshore area.

Scale indicators6 records

Recent moves8 records

Expansion highlights6 records

Broad incumbents

• RWE Renewables: RWE is a European utility with one of the world's largest offshore wind development pipelines. It is comparable to GPI as a utility-affiliated renewable developer with onshore and offshore wind operations and large-scale project finance capabilities.
• Engie: Engie is a French multinational utility with substantial renewable energy operations including offshore wind. It is comparable as a major utility-affiliated renewable developer with a focus on offshore wind and grid-scale storage, though operating at a much larger global scale than GPI.
• Ørsted: Ørsted is the global offshore wind market leader with a multi-GW portfolio. It is a comparable peer given GPI's pioneering offshore wind + battery storage deployment at Ishikari Bay, although Ørsted operates at substantially larger scale globally.
• Infigen Energy (now Iberdrola Australia): Iberdrola (which acquired Infigen Energy in 2020) is one of the world's largest renewable energy developers with extensive wind operations. It is comparable as a global IPP with utility-scale wind development and operational expertise.
• Pattern Energy Group: Pattern Energy was GPI's controlling shareholder until August 2023 and is one of North America's largest wind and transmission developers. It is a relevant peer as a global utility-scale wind developer with comparable project finance and IPP operating models.
• JERA: JERA is Japan's largest thermal power generator and a major offshore wind developer (formally a GPI shareholder and consortium partner). It is comparable as a large Japanese utility-led renewable energy developer, though it operates across a much broader energy portfolio.
• TEPCO Renewable Power: TEPCO Renewable Power is a subsidiary of Tokyo Electric Power Company and operates Japan's largest utility-owned renewable portfolio including onshore and offshore wind. It is comparable as a Japanese utility-affiliated wind/solar developer but with a much broader and older asset base.
• Mitsui & Co. (Renewables Division): Mitsui & Co. is a Japanese trading house with significant renewable energy investments including offshore wind. It is comparable as a Japan-headquartered entity developing wind projects domestically and globally, though it operates as a diversified conglomerate rather than a pure-play IPP.

Emerging players

• Pacifico Energy: Pacifico Energy is a Japanese renewable energy developer focused on solar and wind projects. It is comparable as a domestic Japan-based renewable IPP, though its portfolio is more solar-weighted than GPI's wind-heavy mix.

Direct peers

• Eurus Energy Holdings: Eurus Energy is one of Japan's largest wind power developers with onshore and offshore wind portfolios across Japan and globally. It is the most directly comparable Japanese wind IPP, with a similar mix of operating assets, project finance structures, and FIT-based revenue model.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/profile.php

Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Subsidiaries9 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 Green Power Investment