What Piller Power Systems does

Piller Power Systems is a German-headquartered manufacturer of mission-critical UPS (uninterruptible power supply) and power conditioning equipment, serving data centers, financial institutions, government agencies, healthcare providers, industrial manufacturers, and naval customers globally. Founded in 1965 and headquartered in Osterode am Harz, Germany, the company operates as a wholly-owned subsidiary of Langley Holdings plc, a privately held UK-based industrial group that generates approximately $2 billion in annual revenue across its divisions. The company employs 501-1,000 staff and maintains a global installed base of approximately 10,000 UPS units across more than 50 countries.

The product portfolio centers on rotary UPS systems (UNIBLOCK series, 150kW to 50MW), modular static UPS for data centers (M+ Series), flywheel-integrated critical power modules (225kW to 2.4MW), and the SHIELDX™ Dynamic Power Stabilization platform engineered specifically for high-intensity AI computing environments. SHIELDX addresses the cyclic and impulsive power load profiles characteristic of AI workloads through Piller's Dynamic Power Conditioning and Stabilization technology. The portfolio also includes static transfer switches (25A to 1600A), frequency converters, and the CleanSource® flywheel UPS line acquired through the 2016 purchase of Active Power Inc. Manufacturing is conducted across facilities in Germany, Italy, and Norway, with capacity being expanded to deliver more than 2GW of behind-the-meter power solutions per year from 2028.

Piller generates revenue primarily through project-based hardware sales of bespoke, quote-priced UPS systems, supplemented by 24/7 service contracts and rental income on the installed base. Distribution is handled through direct enterprise field sales targeting large infrastructure projects, complemented by system integrators and engineering consultants. The company is positioned within Langley Holdings' Power Solutions Division alongside Bergen Engines and Marelli Motori, enabling integrated behind-the-meter power packages that combine gas-fired generation, alternation, and stabilization. This bundled offering has driven BTM contract wins exceeding 3GW for AI data centers across the USA, including a ~750MW agreement with Crusoe announced in June 2026.

Name

Piller Power Systems

Legal name

Piller UK Limited

Website

https://piller.com

Company type

Private

Founded year

1965

Operating status

Operating

Headcount range

501–1,000 employees

Short description

Piller Power Systems manufactures mission-critical UPS and power conditioning equipment for data centers, financial institutions, government, and industrial customers globally, with rotary UPS, flywheel energy storage, and SHIELDX™ stabilization technology for AI workloads.

Ownership category

akta.pro rank

Product category

Uninterruptible Power Supply (UPS) Systems

NAICS

Turbine and Turbine Generator Set Units Manufacturing (333611), Switchgear and Switchboard Apparatus Manufacturing (335313), Mechanical Power Transmission Equipment Manufacturing (333613)

SIC

Motors & Generators (3621), Switchgear & Switchboard Apparatus (3613)

akta.pro primary industry

UPS Systems & Backup Power (Online/line-interactive UPS, industrial backup) (IMAGADAD)

akta.pro secondary industries

Power Distribution & Switchgear (UPS, PDUs, Busway) (HDABAKAA), UPS Batteries & Energy Storage Modules (HDACAJAE), Edge Data Center Power & Energy Systems (UPS, Batteries, Microgrids) (HDABAOAG)

Keywords

• Uninterruptible power supplies
• Rotary UPS systems
• Flywheel energy storage
• Power conditioning equipment
• Static transfer switches

Headquarters

HQ city

Osterode

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. UPS Systems Sales: Sale of rotary UPS (UNIBLOCK), modular static UPS (M+ Series), and flywheel-based UPS systems ranging from 150kW to 50MW capacity for mission-critical power protection applications.
2. SHIELD-X Power Stabilization Technology: Sale of dynamic power conditioning and stabilization systems for AI data centers, addressing the unique power quality challenges of high-density AI computing workloads.
3. Energy Storage Systems: Sale of flywheel kinetic energy storage systems and battery energy storage solutions for UPS backup, power quality, and grid stabilization applications.
4. Service and After-Sales Support: Premium customer support including 24/7 maintenance, technical support, and rental services for UPS equipment. Global network of service staff maintaining approximately 10,000 units in over 50 countries.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels3 records

Core offering

Piller manufactures high-capacity rotary UPS systems (UNIBLOCK, 150kW-50MW), modular static UPS (M+ Series), flywheel-integrated Critical Power Modules, static transfer switches (25A-1600A), and the SHIELD-X Dynamic Power Stabilization platform built on proprietary DPCS technology for AI data center workloads. The company also supplies energy storage flywheels, battery systems, frequency converters, and DeRUPS configurations, serving data centers, banking, healthcare, manufacturing, aviation, naval, energy, and communications customers with bespoke project-based power protection solutions and 24/7 global service support.

Product overview

Piller Power Systems is Europe's leading producer of UPS systems and power conditioning equipment, offering a comprehensive portfolio of mission-critical power protection solutions. The product lineup centers on the SHIELDX™ Dynamic Power Stabilization platform as the flagship technology for AI computing environments, complemented by the UNIBLOCK™ rotary UPS series (150kW-50MW), M+ Series modular static UPS for data centres, and Critical Power Modules with flywheel storage (225kW-2.4MW). Supporting products include static transfer switches, energy storage flywheel and battery systems, DeRUPS™ and Isolated Parallel configurations, and frequency converters. The CleanSource® brand, acquired from Active Power in 2016, extends flywheel-based UPS capabilities. Internal teams control all aspects of development, design, and manufacturing across UPS systems, power stabilizers, static transfer switches, kinetic energy storage, aircraft ground power systems, frequency converters, and naval power supplies.

Differentiator

Problem solved

Functional benefit

Brands

• SHIELDX™: Dynamic Power Stabilization technology for AI computing environments, addressing power behaviors that make AI-driven loads disruptive.
• UNIBLOCK™
• M+ Series
• Critical Power Module (CPM)
• DeRUPS™
• CleanSource®

Products and services

• SHIELD-X Dynamic Power Stabilization Advanced power conditioning system engineered for high-intensity AI computing environments, built on Piller's proven Dynamic Power Conditioning and Stabilization (DPCS) technology to address the cyclic and impulsive power load behaviors that make AI-driven loads disruptive to power infrastructure. Used by hyperscale AI data center operators.
• UNIBLOCK Series Rotary UPS (150kW to 50MW) Rotary UPS system providing uninterruptible power from 150kW up to 50MW capacity, with flywheel-based kinetic energy storage for ride-through. Designed for mission-critical applications requiring high-reliability power protection at data centers, financial institutions, and industrial sites.
• M+ Series Modular Static UPS for Data Centres Modular static UPS system designed specifically for data centre environments, offering scalable power protection with modular architecture for flexibility and redundancy.
• Critical Power Module (CPM) with Flywheel (225kW to 2.4MW) Integrated power protection modules combining flywheel kinetic energy storage with UPS capability, providing power range from 225kW to 2.4MW for mission-critical applications.
• Static Transfer Switch (25A to 1600A) Static transfer switch enabling automatic transfer between power sources with current ratings from 25A to 1600A.
• Energy Storage Flywheels and Battery Systems Energy storage solutions combining flywheel kinetic energy storage and battery systems for reliable power backup, energy management, and grid stabilization applications.
• Frequency Converters Power frequency conversion equipment for applications requiring different electrical frequencies, used to convert between 50Hz and 60Hz standards or other frequency requirements.
• CleanSource Static UPS with Flywheel (250-1200kW) Static UPS with integrated flywheel technology, available in 250-1200kW range. Product acquired through the 2016 acquisition of Texas-based flywheel UPS specialist Active Power Inc.
• After-Sales Service and Maintenance Premium 24/7 maintenance, technical support, and rental services for installed UPS equipment, delivered through a global service network maintaining approximately 10,000 units in over 50 countries.

Quantifiable outcome

• 3GW+ signed BTM power deals for AI data centers across USA since entering BTM market at Datacloud Congress 2025
• +2 more outcomes

Named customers7 records

Segments8 records

Ideal customer profiles6 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Five partnerships are on record, tiered flagship and core.

• CrusoeflagshipStrategic or Co-development Partner · 3 June 2026AI infrastructure company that signed approximately 750MW power generation agreement with Bergen Engines for AI data centers in the USA. Piller's SHIELD-X Dynamic Power Stabilization technology is integrated into the generator sets to address AI workload power demands. The deal comprises a 438MW contract and 310MW LOI, covering 27x B36:45V20AG2 gensets and 20x B36:45L9AG gensets with phased delivery through 2027.
• Bergen EnginescoreStrategic or Co-development Partner · 1 June 2025Norwegian engine manufacturer (formerly Rolls-Royce Bergen Engines) supplying gas-fired generator sets for BTM (behind-the-meter) power solutions. Part of Langley Holdings Power Solutions Division along with Piller and Marelli Motori. Bergen provides the generation capacity while Piller provides power stabilization technology for AI data center applications.
• Marelli MotoricoreStrategic or Co-development Partner · 1 June 2025Italian alternator manufacturer providing generators for BTM power solutions. Part of Langley Holdings Power Solutions Division along with Piller and Bergen Engines. Marelli Motori provides alternators that complement Bergen Engines generator sets and Piller's power stabilization technology.
• Active Power Inc.coreTechnology or Integration · 1 January 2016Acquired in 2016, Active Power is a Texas-based flywheel UPS specialist. The acquisition expanded Piller's flywheel energy storage capabilities and added the CleanSource product line to its portfolio.
• Langley Holdings plccoreStrategic or Co-development Partner · 1 January 2004Parent company that acquired Piller in 2004. Langley Holdings is a privately owned UK-based engineering and industrial manufacturing group. Piller Group GmbH is a wholly owned subsidiary of Langley Holdings and is part of the Power Solutions Division.

Scale indicators5 records

Recent moves7 records

Expansion highlights4 records

Direct peers

• ABB: ABB manufactures UPS systems, power conditioning equipment, switchgear, and power protection products for industrial, data center, and utility customers — directly comparable to Piller's UPS and static transfer switch portfolio in both industrial and mission-critical applications.
• Vertiv: Vertiv is one of the largest pure-play data center UPS and power infrastructure providers, offering static UPS, power distribution, and thermal solutions to hyperscalers and colocation operators — directly competing with Piller's M+ Series static UPS and power conditioning portfolio for AI data center customers.
• Socomec: Socomec is a European-headquartered specialist in critical power, manufacturing static UPS, transfer switches, and power monitoring equipment for data centers and industrial applications — a like-for-like peer for Piller's modular static UPS and static transfer switch lines.
• Eaton: Eaton manufactures a broad range of UPS systems (single-phase and three-phase) for data centers, IT, and industrial applications, and has been actively expanding its AI data center power protection portfolio — directly competing with Piller's UNIBLOCK rotary UPS and modular static UPS offerings.

Broad incumbents

• Caterpillar: Caterpillar, through its Electric Power division, supplies large generator sets and integrated BTM power solutions for data centers and critical infrastructure — competing with the broader Langley Holdings Power Solutions offering where Bergen Engines + Piller are sold as a stack.
• Schneider Electric: Schneider Electric (including the APC brand) is a global incumbent in data center infrastructure with a substantial UPS and power conditioning business, large R&D and channel scale, and a full data center stack from racks to UPS — competing with Piller across nearly every mission-critical power segment.
• Generac Power Systems: Generac is a major generator and energy storage manufacturer with growing exposure to data center and BTM power solutions through its industrial and C&I segments, increasingly competing with the Bergen/Piller/Marelli stack for behind-the-meter AI data center power.
• Rolls-Royce Power Systems (mtu): Rolls-Royce's mtu Power Systems division supplies large gas/diesel generator sets, uninterruptible power systems, and microgrids for data centers and mission-critical sites — a directly comparable peer for BTM power solutions and large-capacity UPS.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/piller-power-systems

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A1 record

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Piller Power Systems