What Marelli Motori does

Marelli Motori s.r.l. is an Italian manufacturer of industrial-grade alternating current generators (alternators), electric motors, and automatic voltage regulators (AVRs), headquartered in Arzignano near Verona. Founded in 1891, the company operates one of Europe's most advanced vertically integrated alternator and motor production facilities, manufacturing machines up to 13 MW, 15 kV, and 50 tons. Its products carry IECEx and ATEX certifications, qualifying them for hazardous environments in oil & gas and other demanding industrial applications, and are sold across marine, oil & gas, hydropower, cogeneration, power generation, and general industrial sectors in over 120 countries through wholly-owned subsidiaries in Germany, Malaysia, South Africa, the United Kingdom and the United States, supplemented by a global distributor and service partner network. Beyond core hardware, Marelli generates aftermarket revenue through overhauling, repairs, wind repair services, spare parts, commissioning, on-site services, predictive diagnostics, warranty extension, technical training, and maintenance contracts.

Marelli operates as part of Langley Holdings plc's Power Solutions Division, alongside Bergen Engines (gas engine manufacturer, formerly Rolls-Royce Bergen Engines, joined December 2021) and Piller Power Systems (power stabilization). This structure enables an integrated behind-the-meter power offering for AI data center customers, bundling Bergen gas gensets with Marelli alternators and Piller SHIELD-X dynamic power stabilization technology. Within one year of US market entry, the Power Solutions Division signed over 3GW of AI data center behind-the-meter power deals, including a ~750MW agreement with Crusoe (438MW contract plus 310MW LOI) and a 500MW+ agreement with Liberty Energy (Liberty Power Innovations), with phased delivery through 2027.

The company is privately held, wholly-owned by Langley Holdings plc — a family-owned UK engineering and industrial conglomerate founded in 1975 that generates approximately $2.0 billion in annual revenue across three divisions with over 5,000 employees worldwide. Marelli itself employs approximately 500 people; standalone revenue is not disclosed. The Power Solutions Division is currently expanding production capacity across factories in Norway, Italy and Germany to support upwards of 2GW of behind-the-meter power generation from 2028, with the Bergen B36:45V20 12.5MW engine platform reportedly sold out until Q2 2028. The combination of a 130+ year industrial heritage, IECEx/ATEX-certified manufacturing depth, and exposure to AI data center power demand via the Bergen-Piller stack positions Marelli as a critical component supplier in the US hyperscale AI infrastructure buildout.

Name

Marelli Motori

Legal name

Marelli Motori s.r.l.

Website

https://marellimotori.com

Company type

Private

Founded year

1891

Operating status

Operating

Headcount range

501–1,000 employees

Short description

Marelli Motori is an Italian industrial manufacturer of alternators, electric motors, and automatic voltage regulators for power generation, marine, oil & gas, and industrial applications, operating as a wholly-owned subsidiary of Langley Holdings plc within its Power Solutions Division.

Ownership category

akta.pro rank

Product category

Industrial Electrical Equipment

NAICS

Turbine and Turbine Generator Set Units Manufacturing (333611), Engine, Turbine, and Power Transmission Equipment Manufacturing (33361)

SIC

Motors & Generators (3621), Electrical Industrial Apparatus (3620)

akta.pro primary industry

Hydropower Turbines, Generators & Balance-of-Plant Equipment Manufacturing (EUAMAHAF)

akta.pro secondary industries

Plant Electrical Systems Upgrades (Aux Power, MCCs, Cabling, Earthing) (EUAEALAJ), Fuel & Emissions Systems for Propulsion (Fuel supply, SCR, EGR, exhaust aftertreatment) (IMAJAHAK)

Keywords

• Industrial alternators
• Electric motors
• Voltage regulators
• Power generation equipment
• Genset components

Headquarters

HQ city

Arzignano

HQ country

Italy

HQ region

Europe

Offices7 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Generator and alternator sales: Revenue primarily from manufacturing and selling electric generators and alternators as original equipment for genset manufacturers and industrial customers
2. Electric motor sales: Sales of electric motors for cogeneration, industrial, oil & gas, marine, and hydropower applications
3. After-sales service and spare parts: Comprehensive after-sales services including overhauling, repairs, wind repair services, spare parts, commissioning, on-site services, predictive diagnostics, warranty extension, technical trainings, and maintenance contracts

Go-to-market motion1 record

Distribution channels4 records

Marketing channels3 records

Core offering

Marelli Motori manufactures industrial-grade alternating current generators (alternators), electric motors, and Automatic Voltage Regulators (AVRs) at its Arzignano, Italy headquarters. Its machines are produced up to 13 MW, 15 kV, and 50 tons for power generation, cogeneration, hydropower, oil & gas, marine, and general industrial applications. The company also provides a comprehensive after-sales service portfolio including overhauls, repairs, spare parts, commissioning, predictive diagnostics, and maintenance contracts.

Product overview

Marelli Motori is a leading Italian manufacturer of generators, frequency converters, and electric motors. The company's product portfolio consists of three core product lines: Motors, Generators (Alternators), and AVRs (Automatic Voltage Regulators). Their industrial-grade machines are manufactured up to 13 MW, 15kV, and 50 tons at their Arzignano headquarters facility. The products serve demanding energy and industrial applications across sectors including cogeneration, hydropower, Oil & Gas, power generation, industrial, and marine. The company operates as part of Langley Holdings' Power Solutions Division alongside Bergen Engines and Piller Power Systems, providing modular power generation solutions for AI data center infrastructure.

Differentiator

Problem solved

Functional benefit

Products and services

• Generators (Alternators) Industrial-grade alternating current generators and alternators for power generation applications, suitable for micro, mini and medium CHP plants, cogeneration, hydropower, AI data center behind-the-meter power, and other demanding energy applications. Machines are manufactured up to 13 MW, 15kV, and 50 tons.
• Motors Electric motors for a wide variety of industrial applications including Oil & Gas (meeting International EN Standard IECEx and ATEX Directive), marine, power generation, and general industrial use.
• Automatic Voltage Regulators (AVRs) Automatic Voltage Regulators used to control and stabilize generator output voltage in power generation systems.
• After-Sales Service Comprehensive after-sales services including overhauling and repairs, wind repair services, spare parts, commissioning, on-site services, predictive diagnostics, warranty extension, technical trainings, and maintenance contracts for installed Marelli equipment.

Quantifiable outcome

• Over 3GW of BTM power deals signed for AI data centers in the USA within one year of market entry
• +1 more outcomes

Named customers2 records

Segments6 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Two partnerships are on record, tiered core.

• Bergen EnginescoreTechnology or Integration · 3 June 2026Bergen Engines integrates Marelli Motori alternators into their B36:45V20AG2 and B36:45L9AG gas gensets for power generation solutions. Bergen Engines is a sister company under Langley Holdings' Power Solutions Division, together with Marelli Motori and Piller Power Systems. The combined offering provides integrated behind-the-meter power solutions for AI data centers.
• Piller Power SystemscoreTechnology or Integration · 3 June 2026Piller Power Systems provides SHIELD-X Dynamic Power Stabilization technology integrated with Bergen Engines gensets featuring Marelli Motori alternators. The combined solution delivers stable, conditioned power for AI data centers, managing sub-second load variations up to 30%. Piller is part of Langley Holdings' Power Solutions Division alongside Marelli Motori and Bergen Engines.

Scale indicators7 records

Recent moves6 records

Expansion highlights3 records

Direct peers

• Leroy-Somer (Nidec Power): Leroy-Somer, now part of Nidec, is one of the world's largest manufacturers of industrial alternators and electric motors for power generation, marine, oil & gas, and industrial applications — directly competing with Marelli Motori across nearly every product line and end market.
• Cummins Generator Technologies (Stamford AvK): Cummins' Generator Technologies division produces Stamford and AvK branded alternators (up to ~11 MW) for genset OEMs and industrial power applications, directly competing with Marelli Motori alternators in the same genset OEM channel.
• Mecc Alte: Italian-headquartered Mecc Alte manufactures low- and medium-voltage alternators (up to ~5 MW) for gensets, marine, and industrial applications — a focused, family-owned European alternator specialist that competes head-to-head with Marelli in genset integration.
• TMEIC (Toshiba Mitsubishi-Electric Industrial Systems): TMEIC manufactures large industrial motors, drives, and generators for metals, mining, power generation, and oil & gas — overlapping directly with Marelli in large-frame industrial motors and alternators for demanding applications.
• Ingeteam: Ingeteam manufactures generators, motors, and power electronics for renewable energy (wind, hydro), oil & gas, and marine applications — a direct peer to Marelli in hydropower and oil & gas alternator segments with comparable scale and certification profile.
• Brush Group: Brush (formerly Brush Electrical Machines) manufactures large generators and electrical machines for power generation, naval, and industrial markets — a focused European peer to Marelli in large-frame alternators for utility and industrial power.

Broad incumbents

• ABB: ABB is a global electrification and motion leader with broad portfolios in industrial electric motors, generators, and drives — competing with Marelli across large industrial motors and power generation equipment, but with much broader scope and scale.
• Siemens Energy: Siemens Energy manufactures large generators and grid-scale power generation equipment (including former Siemens Gamesa renewable generators) — overlapping with Marelli in power generation and hydropower alternators but as part of a much larger utility-scale portfolio.
• WEG: Brazilian global manufacturer WEG produces industrial electric motors, generators, transformers, and drives across a massive global footprint — a broad incumbent competitor to Marelli in industrial motors and medium-power alternators.
• Nidec Corporation: Nidec acquired Leroy-Somer in 2017 and now owns one of the largest industrial motor and alternator businesses globally — a broad incumbent competing with Marelli in industrial motors and alternators, with significantly larger R&D and capital base.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/marelli-motori

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries5 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 Marelli Motori