Daihen Corporation

DAIHEN is an Osaka-based electrical-equipment maker with a 107-year history. It combines three businesses that rarely sit under one roof. The first is power-grid hardware: Japan's leading franchise in pole-mounted distribution transformers, plus large substation transformers, switchgear, grid-scale battery-storage packages and EV chargers. The second is factory automation: OTC-brand arc-welding robots and clean wafer-transfer robots for semiconductor tools. The third is materials processing, built on a welding-machine heritage that dates to 1934 and, more importantly today, on RF plasma power-generation systems for advanced etch and deposition tools. In FY2026 the semiconductor link was visible in its customer list. Tokyo Electron Miyagi, the plasma-etch arm of Tokyo Electron, bought ¥38.3 billion, or 16.1% of group sales, making it the largest customer. Kansai Electric Power was second at 9.9%. Revenue reached a record ¥237.7 billion in FY2026, orders rose 12.6% to ¥271.3 billion, and the order backlog grew 30.7% to ¥142.9 billion. Management guides to another record year in FY2027, helped by AI-driven semiconductor investment, Japanese grid reinforcement and battery-storage roll-out.

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What the company does

DAIHEN designs, manufactures, sells and services electrical and electronic capital equipment. Its annual securities report summarises the group's activity as the manufacture, sale and repair of transformers, welding machines, industrial robots, power supplies for plasma generation and clean-transfer robots. In its integrated reporting the company describes its purpose as contributing to society by developing unique products ("ならでは製品") that solve social issues. Since 2012 its management approach has been the "simultaneous achievement of happiness" for all stakeholders.

Since the fiscal year ended March 2023 the group has reported three segments plus "Other":

Energy Management (EM): power infrastructure and renewables. This covers distribution and power transformers, power receiving and transforming equipment, switches, control and communication equipment, distributed-power equipment (power conditioners, battery-storage systems) and EV-charging equipment. EM produced 53.9% of FY2026 sales.

Factory Automation (FA): industrial robots (mainly arc-welding robots), clean-transfer robots (wafer and FPD handling) and transfer systems. FA produced 13.8% of FY2026 sales.

Material Processing (MP): arc-welding machines, plasma cutting machines, and power supplies for plasma generation (RF and microwave generators with matching units), used mainly in advanced semiconductor manufacturing equipment. MP produced 32.1% of FY2026 sales.

Other: real-estate leasing, and re-employment of senior employees through DAIHEN Business Service. Less than 0.1% of sales.

Business and revenue model

DAIHEN mainly sells products, with a meaningful service tail.

Product sales dominate: Transformers, switchgear, robots, welders and RF generators are sold as discrete hardware. Power-utility equipment is often built to order from annual or multi-year utility procurement plans. Semiconductor RF systems are designed into OEM tool platforms and shipped against OEM build schedules.

Systems and engineering revenue is growing: Grid-scale battery-storage packages, which integrate in-house PCS, transformers, interconnection equipment and EMS with purchased lithium-ion cells, are sold as turnkey projects. The robot system integrators acquired in 2024 (Rolan Robotics in the Netherlands and Force Design in the US) sell engineered robot cells.

Service and maintenance revenue: comes from installation, repair, inspection and remodelling of transformers and switchgear, carried out through group service companies. Welding consumables and spare parts add further recurring revenue.

Licensing and subscription revenue: is not material.

DAIHEN does not publish a split of revenue between products and services.

Value-chain position

Power infrastructure: a Tier-1 equipment supplier to Japanese regional utilities (Kansai Electric, Tohoku Electric, Chugoku Electric and Kyushu Electric through regional subsidiaries), to industrial and commercial power users, and to independent battery-storage developers.

Semiconductor fab ecosystem: a Tier-1 subsystem supplier to wafer-fab equipment OEMs. DAIHEN does not sell fab tools to chipmakers. It sells the RF plasma power chain (generator, matcher, plasma source) and the wafer-handling robots, aligners and EFEM modules that go inside etch, deposition and other process tools.

Manufacturing automation: an OEM of welding power sources and welding robots. It sells through a large distributor network; DAIHEN's European welding subsidiary Lorch cited more than 1,100 dealer companies across nine countries. It also sells directly and through its own system integrators to automotive, construction-machinery, steel-structure and general fabrication customers.

Customer types and end-markets

Electric power utilities: Main products: Pole-mounted and large transformers, switchgear, distribution automation; Representative customers / channels: Kansai Electric Power (9.9% of FY2026 sales), regional utilities served by subsidiaries

Grid-scale and behind-the-meter storage: Main products: Battery-storage packages, PCS, transformers, EMS; Representative customers / channels: Battery-storage developers, e.g. Sun Village (2.4 GWh development programme)

• Industrial and commercial buildings, data centres, semiconductor fabs — Main products: Power receiving and transforming equipment, mold transformers; Representative customers / channels: EPC contractors, factory owners

EV infrastructure: Main products: Quick chargers (up to 180 kW), normal chargers, wireless charging; Representative customers / channels: Charging operators, fleets

Semiconductor equipment: Main products: RF/MW generators, matching units, plasma sources, clean-transfer robots; Representative customers / channels: Tokyo Electron Miyagi (16.1% of FY2026 sales) and other WFE OEMs

Automotive and general manufacturing: Main products: Arc-welding robots, welding machines, cutting machines, robot cells; Representative customers / channels: Automotive OEMs and Tier-1s, distributors

Independent characterisation

DAIHEN is best understood as a Japan-centric "grid plus semiconductor subsystem" company with a cyclical welding and robotics business attached. About 79% of revenue is domestic, and the two largest customers together account for 26% of sales. That gives DAIHEN unusual exposure to the capex cycles of one semiconductor OEM and one utility. The company's distinctive feature is that both of its growth engines, grid reinforcement and storage on one side and AI-related semiconductor capex on the other, depend on high-power electronics and power-conversion know-how that the group has built for a century. The weakest link is robotics. There, DAIHEN is a mid-sized player against much larger Japanese and European rivals, and FY2026 segment margins fell to about 6%.

Corporate philosophy and long-term aim

DAIHEN's management approach puts the purpose of the company as the "simultaneous achievement of happiness" of all stakeholders. It sets explicit "happiness targets":

• a dividend payout ratio of 30% or more

• environment-friendly products at 80% or more of sales

• development spending of 6% of sales

• "unique" products at 40% or more of sales

• 50% of cost-reduction gains returned to stakeholders

• donations equal to 1% of operating income

The stated aim is to be a "research-and-development-driven company that actively contributes to solving social issues" by fusing its own technologies with advanced external technologies.

2026 Medium-term Plan (FY2025–FY2027), announced May 2024

Four basic policies

1. Expand development into areas that solve social issues. These are decarbonisation (grid and self-consumption storage, charging infrastructure, next-generation distribution equipment including DC distribution, large-capacity receiving systems, EV-lightweighting joining), labour shortages (high-mix, low-volume robot systems, a wider collaborative-robot range, joining equipment that needs less operator skill) and digitalisation (energy-saving semiconductor-equipment power supplies, space-saving robots, plasma sources for chamber cleaning).

2. Reform distributor sales and expand into new fields. This means stronger technical selling, use of each European subsidiary's products and channels across the others, and US expansion through system integrators.

3. Pursue automation and an optimal production system. DAIHEN uses its own robots to automate hard processes and consolidates production (for example, transformers at Shihen Tech).

4. Strengthen human capital through a long-term development plan. Parent-company education spending is to triple versus FY2023 by FY2027, with an engagement target of 75% positive responses.

Financial and non-financial targets

Net sales (JPY bn): FY2024 actual: 188.6; FY2025 actual: 226.3; FY2026 actual: 237.7; FY2027 target: 250 or more; FY2031 target: 300 or more

Operating margin (%): FY2024 actual: 8.0; FY2025 actual: 7.1; FY2026 actual: 7.9; FY2027 target: 10 or more; FY2031 target: 12 or more

ROE (%): FY2024 actual: 13.3; FY2025 actual: 8.8; FY2026 actual: 9.7; FY2027 target: 12 or more; FY2031 target: 12 or more

Development cost ratio (%): FY2024 actual: 4.1; FY2025 actual: 4.0; FY2026 actual: 4.1; FY2027 target: 6 or more; FY2031 target: 6 or more

Dividend payout ratio (%): FY2024 actual: 24.5; FY2025 actual: 33.4; FY2026 actual: 30.4; FY2027 target: 30 or more; FY2031 target: 30 or more

Here "FY2027" and "FY2031" correspond to the company's "2026年度" and "2030年度".

Sales from social-issue development themes (¥ billion)

Decarbonisation: FY2025 actual: 15.9; FY2027 target: 30; FY2031 target: 55

Labour-shortage solutions: FY2025 actual: 4.8; FY2027 target: 15; FY2031 target: 25

Digitalisation: FY2025 actual: 8.2; FY2027 target: 25; FY2031 target: 45

Total: FY2025 actual: 28.9; FY2027 target: 70; FY2031 target: 125

Cash allocation (FY2025–FY2027 cumulative): operating cash flow of ¥65 billion, allocated as ¥13 billion to shareholder returns, ¥2 billion to debt repayment, ¥20 billion to ordinary investment, ¥20 billion to growth investment and ¥10 billion to M&A.

Environmental targets: Scope 1+2 CO₂ emissions 46% below FY2014 levels (fiscal 2013) by FY2028 (fiscal 2027); Scope 3 25% below fiscal 2020 levels by fiscal 2030.

Progress against the plan

With one year to go, sales are on track. FY2027 guidance of ¥280 billion, set before the October upgrade, exceeds the ¥250 billion target. Operating margin and ROE remain below target: the initial FY2027 guidance implied an 8.9% operating margin, and the October revision brings it closer to 10%. The development-cost ratio, at about 4%, is well short of the 6% goal. Social-issue product sales of ¥28.9 billion in FY2025 must more than double to reach ¥70 billion. Rapid growth in battery-storage orders, with the EMS business guided to about ¥45 billion of FY2027 orders, makes the decarbonisation part of that target the most achievable.

Strategic initiatives, last 24 months

Oct 2024: Initiative: Dual headquarters; Detail: Tokyo head office in Otemachi to strengthen marketing and technical sales to Tokyo-based customers and investors

Oct 2024: Initiative: US robot-system build-out; Detail: Force Design acquisition (2023 sales of ¥0.5 billion) to reach the US sales target

Feb 2025: Initiative: Capital efficiency; Detail: 400,000 shares (1.6%) bought back for up to ¥2.86 billion and cancelled

May 2025: Initiative: Transformer capacity for storage; Detail: 1.7x capacity for industrial oil-immersed transformers at Shihen Tech, ¥5 billion

Aug 2025: Initiative: Battery supply chain; Detail: CATL/VOLT supply contract: 1 GWh of cells over 2025–2027 (300 MWh in FY2026)

Nov 2025: Initiative: Shareholder base; Detail: Secondary offering of 1.5 million shares to retail investors to unwind cross-shareholdings

Dec 2025: Initiative: Grid capacity; Detail: Large-transformer capacity to double by FY2030 at Mie, about ¥10 billion

Feb 2026: Initiative: Shareholder returns; Detail: Buyback of up to 1.2% of shares and ¥4 billion; 250,000 shares bought for ¥2.92 billion on 4 February 2026

Apr 2026: Initiative: Storage partnership; Detail: Sun Village to develop about 2.4 GWh of grid-storage plants using DAIHEN packages

2026: Initiative: Disaster-prevention storage; Detail: Joint marketing with Senko Group of fire-service-certified lithium-ion emergency power

Sep 2026: Initiative: Storage scale-up; Detail: Production capacity for storage-plant equipment raised to four times its former level; field-service staff increased

Oct 2026: Initiative: Liquidity; Detail: 5-for-1 stock split to lower the investment unit and broaden the shareholder base

DAIHEN does not publish list prices. Equipment is priced by quotation, project or OEM contract.

Energy Management

Factory Automation

Material Processing