Voltaiyo
- Company typePrivate
- Founded2021
- HeadquartersTokyo, Japan
- Headcount1–10
- GTM typeB2B
- OfferingServices
What Voltaiyo does
Voltaiyo K.K. (Voltaiyo株式会社) is a Japanese renewable energy developer specializing in the end-to-end development, construction, and operation of utility-scale solar photovoltaic power plants. Formed in September 2025 through the merger of two Japanese subsidiaries of Denmark-based Obton A/S—Obton Japan GK and Obton Japan AM K.K. (formerly BCPG Japan)—the company operates as a wholly-owned subsidiary of Obton and carries forward a portfolio lineage traceable to SunEdison Japan (established 2010). Voltaiyo manages an operating portfolio of approximately 408 MW DC across at least seven utility-scale sites in Fukushima, Miyagi, Osaka, Fukuoka, and other prefectures, with an additional 13 MW DC in development.
The company's core product is grid-connected, utility-scale solar electricity generation, with operational technology comprising standard industry components: photovoltaic modules from Trina Solar, LG, Jinko, Neo Solar Power, and others, paired with power conditioning systems from TMEIC and Huawei. Engineering, procurement, construction, and operations & maintenance services are handled in-house through subsidiary Voltaiyo Engineering K.K., supported by EPC contractors including IHI Plant Construction and Daiwa House Industry. Voltaiyo also operates Japan's largest-scale agrivoltaic (solar sharing) facilities at Gotemba, where hisakaki (sacred Shinto/Buddhist trees) are cultivated under elevated panels in partnership with agricultural firms Kyu Hanaen and Kumagai Nenkisha.
Voltaiyo monetizes electricity through long-term (typically 20-year) Power Purchase Agreements under Japan's Feed-in Tariff (FIT) system at fixed rates of 36-40 yen/kWh, selling exclusively to regional electric utilities including TEPCO, Chubu Electric Power, Tohoku Electric Power, and Chugoku Electric Power. Project-level capital is structured through non-recourse project finance (e.g., ING Bank covering ~85% of project costs for the Nagi plant). The company's strategic direction is anchored by an April 2025 partnership with ICG Asia-Pacific Infrastructure, providing institutional capital to support a publicly stated goal of surpassing 1,000 MW of installed solar capacity within five years through a combination of M&A and self-development. GTM is direct enterprise sales targeting landowners for site acquisition, financial institutions for project finance, and institutional investors for portfolio expansion.
Voltaiyo firmographics
Firmographics- Name
- Voltaiyo
- Legal name
- Voltaiyo株式会社
- Website
- https://voltaiyo.com
- Company type
- Private
- Founded year
- 2021
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Ownership category
- akta.pro rank
Voltaiyo industry classification
Industry- Product category
- Utility-Scale Solar Power Generation
- NAICS
- Solar Electric Power Generation (221114), Electric Power Generation (22111)
- SIC
- Electric Services (4911)
- akta.pro primary industry
- Solar Project Development & IPP (Utility-Scale & Rooftop) (EUAMABAA)
- akta.pro secondary industries
- Solar EPC & Construction (Utility-Scale, Rooftop, Balance of System) (EUAMABAB), Solar PV Power Plant EPC (Utility-Scale) (EUAEAAAG), PV Balance of System (BOS) & Electrical Infrastructure (Inverters, Transformers, Cabling, Substations) (EUACAGAC)
Keywords
Where Voltaiyo is headquartered
LocationHeadquarters
- HQ city
- Tokyo
- HQ country
- Japan
- HQ region
- Asia
Offices3 records
Markets served
Voltaiyo business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Technology or R&D, Infrastructure, Operations, Supply Chain, Personnel, Others
Revenue model
- Solar Power Generation and Sale: Voltaiyo develops, constructs, and operates solar power plants, selling all generated electricity through Japan's Feed-in Tariff (FIT) system to regional utility companies including Tokyo Electric Power, Chubu Electric Power, Tohoku Electric Power, and others. Revenue is generated through long-term power purchase agreements at fixed rates.
Go-to-market motion1 record
Distribution channels1 record
Marketing channels3 records
Voltaiyo product offering
Product offeringCore offering
Voltaiyo develops, constructs, and operates utility-scale solar photovoltaic (PV) power plants across Japan, selling the generated electricity to regional electric utilities under long-term Feed-in Tariff (FIT) contracts. The company manages a portfolio of approximately 408 MW DC of operating capacity plus 13 MW DC under development, including agrivoltaic (solar sharing) installations that combine power generation with agricultural land use.
Product overview
Voltaiyo is a renewable energy company specializing in the development, construction, and operation of solar photovoltaic power plants in Japan. The company operates a portfolio-based model consisting of its core service offering—end-to-end solar project development and management—and its subsidiary Voltaiyo Engineering K.K., which handles engineering and O&M services. The product portfolio includes a diverse range of operational solar plants (totaling approximately 408 MW DC across 7+ locations), a development pipeline of approximately 13 MW DC, and specialized agricultural-integrated solar sharing facilities. The company serves utility-scale markets through fixed-price feed-in tariff (FIT) contracts with regional power utilities.
Differentiator
Problem solved
Functional benefit
Products and services
- Voltaiyo Utility-Scale Solar Power Plant Portfolio (operating)
Quantifiable outcome
- Annual power generation of approximately 35,384,000 kWh for Komagane plant alone (equivalent to about 8,200 households)
- +1 more outcomes
Companies that use Voltaiyo
Customer profileNamed customers4 records
Segments1 record
Ideal customer profiles3 records
Voltaiyo technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Voltaiyo partnerships and signals
Strategic signalPartnerships
Ten partnerships are on record, tiered core, major and supporting.
- Obton A/ScoreDanish renewable energy company (headquartered in Aarhus, Denmark) that owns and operates solar and wind projects globally. Obton acquired BCPG Japan's portfolio and consolidated Japanese operations under the Voltaiyo brand in September 2025. Obton established its Japan subsidiary in September 2021.
- BCPG Public Company LimitedmajorThai renewable energy company (subsidiary of Bangchak Petroleum) that previously operated Japan's solar portfolio before selling to Obton in June 2024. BCPG acquired SunEdison Japan's operations in February 2016.
- IHI Plant Construction Co., Ltd.majorJapanese engineering and construction company serving as EPC contractor for solar power plant projects including Komagane (32MW DC) and Nagi (14.1MW DC) facilities.
- Kyu Hanaen (久花園本店)majorAgricultural company managing cultivation of hisakaki (sacred shinto/ buddhist tree) plants at agrivoltaic solar sites in Gotemba. Manages approximately 13,000 sacred tree seedlings under solar panels as part of dual-use agriculture-solar initiative.
- Kumagai Nenkisha (株式会社久花園本店)majorAgricultural partner managing 1 hectare of sacred tree cultivation under solar panels at Gotemba agrivoltaic sites, providing employment opportunities for workers with disabilities through social welfare services.
- Trina SolarmajorChinese solar panel manufacturer supplying photovoltaic modules for multiple Voltaiyo projects including Akita Nikaho, Nagi, Gotemba, Komagane, and other facilities.
- Huawei TechnologiesmajorChinese technology company providing power conditioning systems (PCS) and distributed inverters for solar power plants including Gotemba, Komagane, and other projects.
- TMEIC (Toshiba Mitsubishi-Electric Industrial Systems)majorJapanese power electronics company providing power conditioning systems (PCS) for multiple solar power plants in the portfolio.
- Chugoku Electric Power Engineering (中国電力係)supportingLocal engineering contractor for grid interconnection and private transmission line construction at the Nagi solar power plant.
- Daiwa House Industry Co., Ltd.supportingJapanese construction company serving as EPC contractor for Akita Nikaho solar power plant (13.16MW DC).
Scale indicators4 records
Recent moves8 records
Expansion highlights2 records
Voltaiyo competitors and assessment
Company assessmentBroad incumbents
- JERA: Japan's largest power generation company, a joint venture between TEPCO and Chubu Electric Power, with growing renewable energy investments. Comparable as a major Japanese power generator expanding into utility-scale solar, though predominantly a thermal generation operator.
- ENEOS Holdings: Major Japanese energy conglomerate with renewable energy operations including utility-scale solar development. Comparable as a Japanese power sector participant investing in renewables, though renewable operations are a small part of a much broader fossil fuel and refining business.
- Brookfield Renewable (Japan): Global renewable energy IPP and asset manager with utility-scale solar and wind operations in Japan. Comparable to Voltaiyo in asset class and Japanese market exposure, though embedded in a vastly larger global infrastructure platform.
- EDP Renováveis (Japan operations): Global renewables subsidiary of EDP with utility-scale solar operations in Japan. Comparable as a utility-scale solar IPP operating in Japan, though as part of a much larger global portfolio spanning wind and solar across multiple continents.
Direct peers
- Sonnedix Japan: Global solar IPP with significant operating capacity in Japan. Comparable to Voltaiyo as a pure-play utility-scale solar IPP monetizing long-term offtake contracts with Japanese utilities.
- Renewable Japan: Japanese renewable energy developer with operating solar and wind assets under FIT contracts. Comparable to Voltaiyo as a domestic Japanese utility-scale renewables IPP.
- Shizen Energy: Japan-based renewable energy developer operating utility-scale solar, wind, and biomass projects. Comparable to Voltaiyo in Japanese market focus and project development/operation capabilities, with a broader technology mix.
- Pacifico Energy: Japan-headquartered utility-scale solar and wind developer/IPP with one of the largest operating renewable portfolios in Japan. Closely comparable to Voltaiyo in target market (Japanese utilities under FIT/PPA), asset class (utility-scale solar PV), and vertically integrated development model.
Regional players
- Vena Energy: Asia-Pacific focused renewable energy IPP with operating assets across multiple geographies including Japan. Comparable to Voltaiyo in asset class and IPP business model, though with broader geographic diversification beyond Japan.
Others
- Obton A/S: Denmark-based parent company of Voltaiyo, operating solar and wind projects across multiple European markets. Comparable in that it is the parent platform of Voltaiyo with shared strategy of utility-scale solar IPP development and operation.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks6 records
Key highlights7 records
Customer concentration
Voltaiyo social profiles
Digital presenceVoltaiyo financial estimates
Financial estimateRevenue estimate
Valuation estimate
Voltaiyo leadership team
Management profileNumber of profiles
Profiles1 record
Voltaiyo subsidiaries and ownership
Company hierarchySubsidiaries1 record
Voltaiyo funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Voltaiyo M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Voltaiyo
What does Voltaiyo do?
Voltaiyo develops, constructs, and operates utility-scale solar photovoltaic (PV) power plants across Japan, selling the generated electricity to regional electric utilities under long-term Feed-in Tariff (FIT) contracts. The company manages a portfolio of approximately 408 MW DC of operating capacity plus 13 MW DC under development, including agrivoltaic (solar sharing) installations that combine power generation with agricultural land use.
Is Voltaiyo a public or private company?
Voltaiyo is a private company. It is classified as corporate owned and is currently operating.
When was Voltaiyo founded?
Voltaiyo was founded in 2021. It employs 1 to 10 people.
Where is Voltaiyo based?
Voltaiyo is headquartered in Tokyo, Japan, in the Asia region.
How does Voltaiyo make money?
One revenue line is on record: solar Power Generation and Sale.
Who are Voltaiyo's main competitors?
Broad incumbents on record are JERA, ENEOS Holdings, Brookfield Renewable (Japan) and EDP Renováveis (Japan operations). Direct peers are Sonnedix Japan, Renewable Japan, Shizen Energy and Pacifico Energy. Vena Energy is listed as a regional player. Obton A/S is listed as an others.
Does Voltaiyo have an API?
No public API is recorded for Voltaiyo.
What industry is Voltaiyo in?
Voltaiyo's product category is Utility-Scale Solar Power Generation. Its primary akta.pro industry code is EUAMABAA, Solar Project Development & IPP (Utility-Scale & Rooftop), with a secondary code of EUAMABAB, Solar EPC & Construction (Utility-Scale, Rooftop, Balance of System). Its NAICS code is 221114 and its SIC code is 4911.