Maruyoshi

What Maruyoshi does

Maruyoshi Corporation Co., Ltd. (株式会社マルヨシコーポレーション) is a privately held Japanese firm founded in July 2009 by Tadayoshi Akaishi and headquartered in Suzuka City, Mie Prefecture, with a secondary office in Nagoya. The company operates four distinct business lines. The construction division is the historical core, delivering new builds, renovations, repairs, and ECO maintenance for both government clients (e.g., Yokkaichi City Hall, Kushiro Government Office, multiple hospitals) and private enterprises (Honda, Denso, Aeon, Mochida Pharmaceutical, Bigmotor, Zimmer Japan), supported by an in-house roster of certified architects, construction management engineers, and fire-protection specialists.

The second line is proprietary renewable-energy hardware: the Ten no Megumi – Tenpu (天の恵み 天風) vertical-axis wind turbine system, comprising the SKY-HG350W 2kW outer-rotor generator, the MCSKY-GB302R power rotor control unit (with RS-232C telemetry and multi-mode protection), and the MCPOWER-GB302R4 mixing unit that aggregates four turbines into a 570V–680V DC output. A third line covers environmental technology via the Ultra Bio N1 environmental circulation system and a Multi Hydrogen Power Supply System. The fourth line is exclusive distribution of niche health supplements (Royal Beta Hanabiratake Mushroom Extract and Inochi no Kosui mineral-rich hard water) through a mail-order/e-commerce channel.

Commercially, Maruyoshi engages customers via direct sales, contact forms, phone inquiries, and a bilingual Japanese/English website, with YouTube product demonstrations in Japanese and Chinese. Revenue is generated through project-based construction contracts (one-time/lump-sum), hardware sales of wind turbine systems, and e-commerce supplement distribution. The company began overseas operations in February 2026, marking its first geographic expansion outside Japan and introducing its wind power products to international markets. It remains family/management-owned with no institutional investors, registered capital of JPY 20 million, and a small organization of three disclosed directors.

Name

Maruyoshi

Legal name

株式会社マルヨシコーポレーション

Website

https://maruyoshi-eco.co.jp

Company type

Private

Founded year

2009

Operating status

Operating

Short description

Maruyoshi Corporation is a privately held Japanese firm in Suzuka City, Mie Prefecture, operating four business lines: construction and ECO maintenance for government and enterprise clients, proprietary vertical-axis wind turbine hardware, environmental circulation systems, and exclusive-distribution health supplements. It is founder-led with no institutional capital and began overseas operations in February 2026.

Ownership category

akta.pro rank

Product category

Construction Services

NAICS

Turbine and Turbine Generator Set Units Manufacturing (333611), Engine, Turbine, and Power Transmission Equipment Manufacturing (3336)

SIC

Engines & Turbines (3510), Motors & Generators (3621)

akta.pro primary industry

Wind Turbine OEM Manufacturing (Nacelles, Drivetrains, Generators) (EUAMAHAD)

Keywords

• Building construction services
• Vertical-axis wind turbines
• Environmental circulation systems
• Health supplements distribution
• Facility maintenance services

Headquarters

HQ city

Suzuka

HQ country

Japan

HQ region

Asia

Offices2 records

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

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

Revenue model

1. Construction Division: Provides eco maintenance services, general service operations, and mail-order/e-commerce operations. Generates revenue through building construction, renovation, repairs, and maintenance services for both public and private sector clients.
2. Wind Power Generation (Ten no Megumi - Tenpu): Revenue from development and deployment of innovative vertical-axis wind turbine systems. Includes sale of turbine generators, control units, and mixing systems for power generation installations.
3. Health Supplements Distribution: Exclusive distribution of health supplement products including Hanabiratake Mushroom Extract Royal Beta and Inochi no Kosui mineral-rich hard water.
4. Ultra Bio N1: Environmental circulation system product line generating revenue through sale and deployment of the eco-friendly technology system.
5. Multi Hydrogen Power Supply System: Sale of multi hydrogen power supply systems for various applications.

Go-to-market motion2 records

Distribution channels3 records

Marketing channels4 records

Core offering

Maruyoshi Corporation delivers building construction, renovation, repair, and ECO maintenance services to public and private sector clients. It also develops and sells proprietary vertical-axis wind turbine systems (Tenpu / SKY-HG350W series), an environmental circulation system (Ultra Bio N1), a multi hydrogen power supply system, and exclusively distributes health supplements including Hanabiratake Mushroom Extract (Royal Beta) and Inochi no Kosui mineral-rich hard water.

Product overview

Maruyoshi Corporation is a multi-business company offering a portfolio of products and services spanning construction, renewable energy, and health supplements. The core product lines include: (1) Construction Business providing architectural design, consulting, and ECO-focused building services; (2) Renewable Energy systems including the Tenpu vertical-axis wind turbine, Multi Hydrogen Power Supply System, and overseas-oriented wind power generation products (MCSKY-HG350W turbine, MCSKY-GB302R control units, MCPOWER-GB302R4 mixing units); (3) Ultra Bio N1 environmental circulation system; and (4) Health supplements including Royal Beta Hanabiratake mushroom extract and Inochi no Kosui mineral-rich hard water. The company operates primarily in Japan with recent expansion into overseas wind power markets.

Differentiator

Problem solved

Functional benefit

Brands

• Ten no Megumi – Tenpu (天の恵み 天風): Innovative vertical-axis wind turbine system for wind power generation
• Ultra Bio N1
• Royal Beta
• Inochi no Kosui (命の硬水)

Quantifiable outcome

• Wind turbine startup at wind speeds as low as 20V generated voltage
• +1 more outcomes

Named customers11 records

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

One partnership is on record.

• Ones-One Co., Ltd.minorOthers · 1 July 2009Related affiliated company specializing in advertising, website design, signage design, planning and production. Located in Kakamigahara City, Japan.

Scale indicators3 records

Recent moves6 records

Expansion highlights4 records

Direct peers

• Helix Wind: Vertical-axis wind turbine manufacturer targeting residential and small commercial distributed generation; directly comparable architecture and customer segment to Maruyoshi's Tenpu turbine line.
• Bergey Windpower: US-based small wind turbine OEM specializing in residential, agricultural, and remote-site installations; directly comparable in targeting distributed small-wind customers rather than utility-scale projects.
• UGE International (Urban Green Energy): Small and distributed wind energy company offering vertical-axis and hybrid wind-solar solutions for telecom, commercial, and off-grid markets; similar product positioning to Maruyoshi's SKY-HG350W platform.
• Northern Power Systems: Manufacturer of small and medium wind turbines (including permanent-magnet direct-drive designs) for distributed generation and microgrid markets; comparable in product scale and use cases.
• Ryse Energy: Small/vertical-axis wind turbine manufacturer focused on distributed and off-grid applications; comparable to Maruyoshi in targeting modular, non-utility wind installations with similar unit-scale output.

Broad incumbents

• Hitachi Energy: Global power electronics and grid integration provider with wind power converter offerings; relevant incumbent in the Japanese market and broader renewable energy value chain that Maruyoshi's SKY/MCPOWER power electronics compete with.
• Enercon: Major German wind turbine OEM with strong direct-drive technology heritage and small-to-medium wind offerings; comparable as a wind turbine OEM with technology-differentiation positioning.
• J-Power (Electric Power Development Co.): Japanese utility with wind power development operations and renewable energy portfolio; comparable as a Japanese-headquartered renewable energy player, though at vastly larger scale and focused on utility-scale projects.
• Siemens Gamesa: One of the world's largest wind turbine OEMs; relevant broad incumbent against which Maruyoshi's small vertical-axis turbines compete at the distributed/edge of the wind market.

Emerging players

• Vortex Bladeless: Spanish startup developing bladeless/novel-architecture wind generators for distributed generation; comparable as an emerging alternative-wind-technology company challenging incumbent horizontal-axis designs.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks6 records

Key highlights6 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries2 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 Maruyoshi