Kiryu
Kiryu (株式会社桐生) is a Tokyo-based Japanese company operating two businesses: an Eco Business selling proprietary AD-series small wind turbines, solar panels, and standalone off-grid power systems, and a System Integration Business delivering custom software, serving municipal, educational, financial, and consumer customers in Japan.
- Company typePrivate
- Founded1996
- HeadquartersTokyo, Japan
- Headcount11–50
- GTM typeB2B and B2C
- OfferingHardware or Manufacturing
What Kiryu does
Kiryu (株式会社桐生) is a privately held Japanese corporation headquartered in Minato-ku, Tokyo, operating two principal business lines. The Eco Business (エコ事業) designs, sources, and distributes standalone renewable energy systems built around proprietary AD-series small wind turbines (AD-400, AD-600, AD-1500PRO with low-wind-speed startup capability of approximately 2 m/s), solar photovoltaic panels, lead deep-cycle household batteries, Morningstar (USA) solar charge controllers, and OREMA POWER batteries. Kiryu serves as the authorized Japanese importer and distributor for the Morningstar and OREMA POWER product lines, bundling these components with its own wind/solar hardware to deliver off-grid power solutions targeting Japanese municipalities, schools, universities, banks, and individual consumers, with documented applications including BCP/emergency backup, disaster-evacuation shelter power, public park lighting, and EV-vessel charging (the Tokyo University of Marine Science research vessel Raichou I).
The System Integration Business (システムインテグレーション事業) provides custom software systems development for enterprise and business customers. Distribution runs through a sales-led, multi-channel model: direct field sales for integration and government projects, the company's own KiRYU Online Shop (kiryu-ginza.com), and listings on Rakuten, Amazon Japan, and Yahoo Shopping for retail hardware. Pricing for hardware is not publicly disclosed and business sales are quoted on inquiry.
In parallel, Kiryu operates an affiliated content-marketing site, あるある家族の毎日弁当 (Aruaru Family Daily Bento), publishing weekly allergy-friendly bento recipes and a recipe-quantity calculator tool, with revenue generated indirectly via traffic and brand engagement rather than direct commerce. The company remains Japan-domestic in geographic scope, with no disclosed institutional investors or parent company, and was most visibly active in 2025 with a corporate website redesign in July and a recipe-site relaunch in September.
Kiryu firmographics
Firmographics- Name
- Kiryu
- Legal name
- 株式会社桐生
- Website
- https://kiryu-corp.co.jp
- Company type
- Private
- Founded year
- 1996
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Kiryu (株式会社桐生) is a Tokyo-based Japanese company operating two businesses: an Eco Business selling proprietary AD-series small wind turbines, solar panels, and standalone off-grid power systems, and a System Integration Business delivering custom software, serving municipal, educational, financial, and consumer customers in Japan.
- Ownership category
- akta.pro rank
Kiryu industry classification
Industry- Product category
- Renewable Energy Equipment
- NAICS
- Turbine and Turbine Generator Set Units Manufacturing (333611), Electric Power Generation, Transmission and Distribution (2211), Switchgear and Switchboard Apparatus Manufacturing (335313)
- SIC
- Cogeneration Services & Small Power Producers (4991), Motors & Generators (3621), Engines & Turbines (3510), Switchgear & Switchboard Apparatus (3613)
- akta.pro primary industry
- Structural & Mechanical BOP Construction (Racking/Trackers, Turbine Erection Support, Mounting Structures) (EUAMAFAC)
- akta.pro secondary industries
- Energy Storage Components for Renewables Manufacturing (BESS Packs, PCS, Thermal Management) (EUAMAHAI), Renewable Monitoring, Controls & SCADA Hardware Manufacturing (Sensors, RTUs, Meters) (EUAMAHAJ)
Keywords
Where Kiryu is headquartered
LocationHeadquarters
- HQ city
- Tokyo
- HQ country
- Japan
- HQ region
- Asia
Offices1 record
Markets served
Kiryu business model
Business model- GTM type
- B2B and B2C
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Personnel, Technology or R&D, Marketing or Sales, Operations
Revenue model
- エコ事業 (Eco Business): Sale of renewable energy hardware including small wind turbines (AD-400, AD-600, AD-1500PRO), solar panels, deep-cycle batteries, solar charge controllers, DC/AC inverters, and complete standalone power systems. Products are sold through company-owned online store (KiRYU Online Shop), Rakuten, Amazon Japan, and Yahoo Shopping. Business-to-business (B2B) sales to dealers and installers are also conducted.
- システムインテグレーション事業 (System Integration): Design and installation of custom solar and wind hybrid power systems for commercial, municipal, and residential customers. Projects include standalone power systems for remote locations, emergency backup systems, and government/municipal installations.
- あるある家族の毎日弁当 (Arularie Family Daily Bento): Recipe website providing weekly changing bento recipes targeting families, those with food allergies, and health-conscious individuals. Revenue generated indirectly through website traffic and brand engagement rather than direct e-commerce sales.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Unit Pricing | Pay-as-you-go | 小型風力発電機 (Small Wind Turbines) |
Go-to-market motion1 record
Distribution channels3 records
Marketing channels7 records
Kiryu product offering
Product offeringCore offering
Kiryu (株式会社桐生) designs, manufactures, and sells small wind turbines, solar panels, deep cycle batteries, and solar charge controllers as standalone and integrated renewable energy systems. Through its KiRYU Online Shop and major Japanese e-commerce platforms it distributes these products to consumers, while also delivering custom system integration (SI) software services — including embedded, web, and business application development — to organizational clients in Japan.
Product overview
株式会社桐生 operates two main business segments: System Integration (ソフトウェア開発) providing custom technology solutions, and Eco Business (エコ事業) focusing on renewable energy products. The Eco Business offers a complete portfolio of independent solar/wind power supply systems, including small wind turbines (AD-400, AD-600, AD-1500PRO), lead deep cycle batteries for household/commercial use, solar charge controllers (Morningstar brand), and related components. The company also runs multiple online sales channels (KiRYU Online Shop, Rakuten, Amazon, Yahoo! Shopping) and operates 'あるある家族の毎日弁当', a recipe website featuring egg-free and allergy-friendly bento recipes with an integrated recipe calculation tool.
Differentiator
Problem solved
Functional benefit
Brands
- あるある家族の毎日弁当: Weekly recipe and bento lunch box site operated by the company, featuring allergy-friendly and theme-based recipes.
Products and services
- AD-400 Small Wind Turbine Compact small-scale wind turbine in Kiryu's proprietary AD series, designed for low-wind and residential or institutional standalone power applications in Japan.
- AD-600 Small Wind Turbine Mid-capacity model in Kiryu's AD wind turbine line, positioned for off-grid residential, commercial, and institutional renewable energy generation.
- AD-1500PRO Small Wind Turbine Higher-capacity flagship model in Kiryu's proprietary AD series, targeted at larger institutional and commercial standalone power installations.
- Solar Panels Photovoltaic panels distributed by Kiryu as part of its renewable energy product range for residential, commercial, and institutional off-grid and hybrid systems.
- Deep Cycle Batteries Storage batteries designed for repeated deep discharge cycles, used by Kiryu customers to store energy from wind and solar sources in standalone power systems.
- Morningstar Solar Charge Controllers Branded Morningstar solar charge controllers distributed by Kiryu to regulate battery charging in wind/solar hybrid and standalone photovoltaic systems.
- OREMA Solar Charge Controllers OREMA-brand solar charge controllers sold by Kiryu as part of its standalone power system component offering for renewable energy installations.
- KiRYU Online Shop Proprietary e-commerce storefront operated by Kiryu where individual consumers and small buyers in Japan can purchase the company's wind turbines, solar panels, batteries, and charge controllers directly.
- System Integration (SI) Software Development Services Custom contracted software services delivered by Kiryu's SI division, covering embedded systems, web applications, and business system development for Japanese organizational clients.
Quantifiable outcome
- Solar power systems provide 5-8 hours of backup power at emergency facilities (based on 9600Wh battery capacity at 1000W load)
- +1 more outcomes
Companies that use Kiryu
Customer profileNamed customers10 records
Segments4 records
Ideal customer profiles4 records
Kiryu technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
Kiryu partnerships and signals
Strategic signalPartnerships
Two partnerships are on record, tiered core.
- Morningstar CorporationcoreAuthorized Japanese importer and distributor of Morningstar Corporation (USA) solar charge controllers and deep cycle batteries. Products are sold through Kiryu's online store and at electronics retailers. This partnership provides access to high-quality American-made charge controller technology for their standalone power systems.
- OREMA POWERcoreAuthorized Japanese importer and distributor of OREMA POWER deep cycle batteries. Products are sold through Kiryu's online store as official imported products, complementing their battery product lineup for renewable energy storage applications.
Scale indicators1 record
Recent moves6 records
Expansion highlights4 records
Kiryu competitors and assessment
Company assessmentBroad incumbents
- Sharp Energy Solutions: Japanese solar PV module and system provider offering residential and commercial solar installations, comparable to Kiryu's solar hardware and system integration business but at significantly greater scale.
- Sungrow Power Supply: Global inverter and energy storage system manufacturer with residential and commercial hybrid storage solutions, broadly comparable to Kiryu's inverter and energy storage components within standalone renewable systems.
- Kyocera Corporation: Large Japanese electronics and solar manufacturer with solar PV modules and integrated energy solutions, broadly overlapping with Kiryu's solar hardware and renewable system offerings as a much larger incumbent.
- GS Yuasa International: Major Japanese battery manufacturer supplying energy storage solutions for renewable and backup power applications, overlapping directly with Kiryu's deep-cycle battery product line and standalone system offerings.
- SMA Solar Technology: Global inverter and renewable energy system manufacturer with off-grid and hybrid inverter products that overlap with Kiryu's DC/AC inverter offerings and broader standalone system portfolio.
Direct peers
- Yanmar Holdings: Japanese manufacturer offering renewable energy systems including wind, solar, and biomass power generation, directly comparable to Kiryu's standalone power system integration business with overlapping municipal and rural off-grid customers in Japan.
- Bergey Windpower: US-based small wind turbine manufacturer offering residential and small-commercial wind turbines, directly comparable to Kiryu's AD-series small wind turbine products targeting off-grid and rural deployments.
- OutBack Power: Manufacturer of off-grid solar inverters, charge controllers, and complete renewable energy systems for remote power applications, directly comparable to Kiryu's standalone power system integration business.
Emerging players
- Eliiy Power: Japanese stationary lithium-ion battery company focused on residential and commercial energy storage, directly comparable to Kiryu's battery storage and BCP backup power products but with a narrower initial product focus.
Regional players
- Furukawa Battery: Japanese battery manufacturer offering lead-acid and lithium batteries for industrial and renewable applications, comparable to Kiryu's deep cycle battery and household storage battery product lines within the Japanese market.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks7 records
Key highlights6 records
Customer concentration
Kiryu social profiles
Digital presenceKiryu financial estimates
Financial estimateRevenue estimate
Valuation estimate
Kiryu leadership team
Management profileNumber of profiles
Profiles1 record
Kiryu funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Kiryu 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 Kiryu
What does Kiryu do?
Kiryu (株式会社桐生) designs, manufactures, and sells small wind turbines, solar panels, deep cycle batteries, and solar charge controllers as standalone and integrated renewable energy systems. Through its KiRYU Online Shop and major Japanese e-commerce platforms it distributes these products to consumers, while also delivering custom system integration (SI) software services — including embedded, web, and business application development — to organizational clients in Japan.
Is Kiryu a public or private company?
Kiryu is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Kiryu founded?
Kiryu was founded in 1996. It employs 11 to 50 people.
Where is Kiryu based?
Kiryu is headquartered in Tokyo, Japan, in the Asia region.
How does Kiryu make money?
Three revenue lines are on record. エコ事業 (Eco Business) is the primary driver. The others are システムインテグレーション事業 (System Integration) and あるある家族の毎日弁当 (Arularie Family Daily Bento).
Who are Kiryu's main competitors?
Broad incumbents on record are Sharp Energy Solutions, Sungrow Power Supply, Kyocera Corporation, GS Yuasa International and SMA Solar Technology. Direct peers are Yanmar Holdings, Bergey Windpower and OutBack Power. Eliiy Power is listed as an emerging player. Furukawa Battery is listed as a regional player.
Does Kiryu have an API?
No public API is recorded for Kiryu.
What industry is Kiryu in?
Kiryu's product category is Renewable Energy Equipment. Its primary akta.pro industry code is EUAMAFAC, Structural & Mechanical BOP Construction (Racking/Trackers, Turbine Erection Support, Mounting Structures), with a secondary code of EUAMAHAI, Energy Storage Components for Renewables Manufacturing (BESS Packs, PCS, Thermal Management). Its NAICS code is 333611 and its SIC code is 4991.