Wartsila

What Wartsila does

Wärtsilä is a Helsinki-headquartered, publicly listed industrial technology company founded in 1834 that designs and manufactures marine and energy systems, primarily large-bore internal combustion engines, propulsion systems, exhaust cleaning systems, and the GEMS energy management platform. The Marine business supplies ship engines, scrubbers, fuel-flexible propulsion, and digital services to shipyards, operators, and cruise and ferry lines, with technology covering conventional fuels, ammonia (Wärtsilä 25), and 100% hydrogen, the last demonstrated in a large-scale engine test in June 2026. The Energy business delivers flexible gas and multi-fuel engine power plants, energy storage solutions, and grid-stabilization services to utilities, IPPs, and increasingly hyperscale data center developers, with carbon capture capability via the OCC solution at 70% CO2 capture rates.

The company operates a global service network of 3,500 field service professionals supporting an installed base covering approximately one in three large vessels worldwide (110,000 connected vessels) and a multi-MW power plant fleet across 180 countries. Revenue is generated through equipment sales, long-term lifecycle service agreements (94% renewal rate in 2025), spare parts, digital services such as Expert Insight predictive analytics and DNV-partnered digital twin fleet management, and performance-based contracts. R&D spend of EUR 329M in 2025 funds the transition to zero-carbon fuels and digital platforms. 2025 net sales were EUR 6,914M, a record year, with the workforce totaling 18,504 employees representing 123 nationalities.

Name

Wartsila

Legal name

Wärtsilä Oyj Abp

Website

https://wartsila.com

Company type

Public

Founded year

1834

Operating status

Operating

Headcount range

5,001–10,000 employees

Short description

Wärtsilä is a Finnish industrial technology company that designs marine engines, propulsion, and flexible power plant systems, and operates a global lifecycle service network serving shipowners, utilities, and data center operators across 180 countries.

Ownership category

akta.pro rank

Product category

Marine and Energy Engine and Power Systems Manufacturing

NAICS

Engine, Turbine, and Power Transmission Equipment Manufacturing (33361)

SIC

Engines & Turbines (3510)

akta.pro primary industry

Propulsion, Power & Energy Systems Design (Diesel, Hybrid, Electric, Alternative Fuels) (IMAJAGAE)

akta.pro secondary industries

Propulsion MRO, Spares & Field Service (Overhauls, retrofits, upgrades) (IMAJAHAN), Fuel & Emissions Systems for Propulsion (Fuel supply, SCR, EGR, exhaust aftertreatment) (IMAJAHAK)

Keywords

• Marine engine systems
• Energy storage solutions
• Hybrid propulsion
• Power plant equipment
• Lifecycle services

Headquarters

HQ city

Helsinki

HQ country

Finland

HQ region

Europe

Offices5 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Equipment Sales: Sale of engines, propulsion systems, power plants, and energy storage systems. Net sales of EUR 6,914 million in 2025 with all-time high order intake.
2. Services and Maintenance: Long-term service agreements, spare parts, technical services, and lifecycle maintenance covering marine and energy equipment. Over half of revenues come from services business.
3. Performance-Based Contracts: Agreements guaranteeing specific fuel consumption reductions or emission outcomes for customers, with payments tied to delivered performance.
4. Digital Solutions: Software and analytics including GEMS energy management, Expert Insight monitoring, and voyage optimization services for marine customers.
5. Energy Storage Joint Venture: 50/50 JV with RCT Solutions for BESS integration and optimization division, generating EUR 694 million in net sales in 2025 but representing only ~10% of total net sales with 3.3% profitability vs 12.1% for other businesses.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels7 records

Core offering

Wärtsilä manufactures and sells engines, propulsion systems, flexible engine power plants, and battery energy storage systems for the marine and energy markets, supported by digital platforms (GEMS, Expert Insight, Wärtsilä Voyage) and lifecycle services. The company's portfolio spans the Wärtsilä 31, 31H2 hydrogen, 25 Ammonia, 46TS-DF LNG, 34SG, and 50SG engine series, plus BESS, simulators, and onboard carbon capture. Wärtsilä generated EUR 6,914 million in 2025 net sales across 180 countries, with more than half of revenue from services and long-term agreements.

Product overview

Wärtsilä offers an integrated portfolio of marine and energy technologies organized around two main divisions. Marine Power provides engine propulsion systems including the Wärtsilä 31 series (diesel/gas), hydrogen (31H2), ammonia (25 Ammonia Solution), and LNG dual-fuel engines (46TS-DF). Marine also offers digital solutions through Voyage platform for voyage optimization and port operations, simulators (NTPRO 7) for training, and wastewater management (GREASE TRAP). Energy provides flexible engine power plants (34SG, 50SG gas engines), battery energy storage systems (BESS) with GEMS energy management software, and carbon capture solutions. Services include Expert Insight predictive analytics and long-term lifecycle maintenance agreements. The portfolio spans from hardware engines to software platforms enabling the decarbonization of shipping and energy markets.

Differentiator

Problem solved

Functional benefit

Brands

• Wärtsilä Voyage: Digital solutions for voyage optimization, route planning, and fleet operations including Navi-Port and Fleet Operations Solutions
• Wärtsilä Water & Waste
• Wärtsilä Energy Storage
• Wärtsilä Exhaust Treatment
• Wärtsilä Underwater Services
• Expert Insight
• GEMS
• Wärtsilä 31
• NTPRO 7

Products and services

• Wärtsilä 31 Engine Series
• Wärtsilä 31H2 Hydrogen Engine
• Wärtsilä 25 Ammonia Solution
• Wärtsilä 50SG Engine
• Wärtsilä 34SG Engine
• Wärtsilä 46TS-DF Engine
• Battery Energy Storage Systems (BESS)
• GEMS Energy Management System
• Expert Insight
• Wärtsilä Voyage
• NTPRO 7 Simulator
• GREASE TRAP – GM Series
• Onboard Carbon Capture (OCC)

Quantifiable outcome

• Onboard carbon capture successfully cuts CO2 emissions by 70% on Solvang's Clipper Eris carrier
• +4 more outcomes

Named customers13 records

Segments7 records

Ideal customer profiles5 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability7 records

Feature10 records

Partnerships

15 partnerships are on record, tiered core and minor.

• CMM (Brazil) & RaízencoreStrategic or Co-development Partner · 17 June 2026Partnership with CMM for first ethanol-powered platform supply vessels that could reduce CO2 emissions by 70%, backed by Brazilian Merchant Marine Fund. Raízen agreement to study ethanol as marine fuel for shipping industry decarbonisation.
• RCT Solutions GmbHcoreStrategic or Co-development Partner · 15 June 202650/50 joint venture to house Wärtsilä's BESS integration and optimization division. Transaction expected to close Q3 2026. RCT Solutions CEO Peter Fath becomes new entity's CEO. JV expected to be loss-making in 2026 with EUR 40-50 million hit to operating result, projected to return to positive results by end of 2027.
• Origem Energia (Brazil)coreStrategic or Co-development Partner · 13 May 2026Equipment supply contracts for 36 Wärtsilä 34SG balancing engines totaling 371 MW for new power projects in Brazil - Pilar, Pilar Nova, and Manguaba I-V power plants. Projects won in Brazil's Reserve Capacity Auction 2026 (LRCAP), largest capacity auction ever held in country.
• Incat Tasmania & MolslinjencoreTechnology or Integration · 8 May 2026Wärtsilä integrated electric propulsion system for world's largest electric ferry project - three 129-meter vessels for Danish operator Molslinjen capable of 40 knots with 30-minute recharge via Wabtec's 58 MW automatic charging system.
• University of VaasacoreStrategic or Co-development Partner · 7 May 2026Lead partner in H4PERION project - four-year Horizon Europe initiative awarded EUR 11.2 million to develop hydrogen-powered engine solutions for zero-carbon maritime vessels. Wärtsilä developing combustion concept enabling marine engines to run on hydrogen-biomethane blends with goal of 100% hydrogen operation.
• Wasaline, Deltamarin, MEYER WERFTcoreStrategic or Co-development Partner · 6 May 2026EU-funded H4PERION consortium partners for hydrogen-capable internal combustion engine demonstration on Aurora Botnia ferry. 16 partners from 7 European countries working toward 55% net efficiency with near-zero emissions using Reactivity Controlled Compression Ignition technology.
• Black Hills EnergyminorImplementation/ SI/ Consulting Partner · 3 May 2026Lange II project - 99 MW generating station in South Dakota with six Wärtsilä 50DF dual-fuel units and 600,000 gallons on-site diesel storage for backup fuel resilience. Commissioning expected Q3 2026.
• MF Shipping GroupcoreStrategic or Co-development Partner · 27 April 2026Fleet management partner with Erik Thun Group for development of long-term overhaul frame agreement covering Northern European short sea shipping fleet.
• Erik Thun GroupcoreStrategic or Co-development Partner · 26 April 2026Long-term overhaul frame agreement covering comprehensive maintenance, technical services, field services, workshop support, and parts supplies for 4-stroke medium-speed engines, propulsion machinery, and shaft line equipment across approximately 50 vessels operating in Northern European short sea shipping routes.
• KETI (Korea Electronics Technology Institute)minorStrategic or Co-development Partner · 22 April 2026Partnership Day event bringing together Nordic AI experts including Wärtsilä to discuss AI and manufacturing cooperation in South Korea.
• DNV GLcoreStrategic or Co-development Partner · 20 April 2026Partnership to co-develop digital twin-enabled fleet management solutions. Part of broader industry move toward digitalization and predictive maintenance.
• Margaritaville at SeacoreStrategic or Co-development Partner · 9 April 202610-year Lifecycle Agreement for maintenance and technical services across three cruise vessels. First two agreements (Paradise and Islander) booked Q1 2026; third vessel (Beachcomber) joins fleet in early 2027 with Expert Insight digital solution.
• Weathernews Inc (WNI)coreStrategic or Co-development Partner · 26 March 2026Strategic partnership integrating WNI weather forecasts and Optimum Ship Routeing (OSR) service with Wärtsilä Fleet Operations Solution for enhanced navigation safety and fuel optimization.
• Skarv Shipping Solutions (Grieg Edge & Peak CSL)coreStrategic or Co-development Partner · 24 February 2026Joint venture building new cargo vessel - first to use Wärtsilä 25 Ammonia solution for propulsion. Vessel constructed at Huanghai shipyard in China, running on zero-carbon green ammonia with approximately 90% GHG reduction vs diesel engines.
• Höegh LNGcoreStrategic or Co-development Partner · 13 April 2023EUR 5.9 million Norwegian Government funded project to develop ammonia as hydrogen carrier. Project aims to enhance large-scale storage and transportation of green ammonia, converting back to hydrogen onboard Höegh LNG vessel with floating terminals.

Scale indicators24 records

Recent moves10 records

Expansion highlights5 records

Direct peers

• MAN Energy Solutions: Direct peer in marine two-stroke and four-stroke engines, plus turbomachinery and decarbonization solutions. Competes head-to-head with Wärtsilä in ship propulsion and power generation, including alternative-fuel engine development.
• Rolls-Royce Power Systems (mtu): Direct peer in high-speed and medium-speed engines for marine propulsion, naval vessels, and stationary power. Overlaps significantly with Wärtsilä in naval, commercial marine, and data center/mission-critical power applications.
• Caterpillar Marine: Direct peer in marine and industrial engines, including dual-fuel and Tier 4 solutions. Competes with Wärtsilä in tug, offshore, and commercial marine propulsion and in industrial power generation.
• Alfa Laval: Direct peer in marine equipment including separators, heat exchangers, and fluid handling. Complementary but overlapping in scope of marine decarbonization systems and lifecycle service offerings.
• Kongsberg Maritime: Direct peer in marine digital solutions, automation, and propulsion controls. Competes with Wärtsilä Voyage and Expert Insight in vessel optimization, navigation, and digital fleet management.

Broad incumbents

• Cummins: Broad incumbent in diesel and alternative-fuel engines across marine, rail, mining, and power generation. Overlaps with Wärtsilä in smaller-scale marine propulsion, gensets, and industrial power applications.
• ABB Marine & Ports: Broad incumbent in marine electric propulsion, automation, and shore power. Overlaps with Wärtsilä in hybrid/electric propulsion systems and digital ship operations, particularly for ferries and cruise segments.
• Siemens Energy: Broad incumbent in gas turbines, grid technology, and large-scale power generation. Competes with Wärtsilä's flexible engine plants and energy storage in utility-scale and industrial power markets.
• GE Vernova: Broad incumbent in gas, steam, and wind turbines plus grid solutions. Competes with Wärtsilä in flexible power generation and energy storage integration for utility and data center customers.
• Mitsubishi Power: Broad incumbent in gas turbines and hydrogen-ready turbine technology. Overlaps with Wärtsilä in flexible power generation, hydrogen co-firing, and APAC utility-scale energy projects.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat8 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/wartsilacorp
• YouTubeyoutube.com/user/wartsilacorp
• Facebookfacebook.com/wartsila
• LinkedInlinkedin.com/company/166989
• Instagraminstagram.com/wartsila

Compliance11 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 records

Subsidiaries8 records

Funding overview

Funding rounds2 records

Investors2 records

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

M&A5 records

Investments3 records

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

Frequently asked questions about Wartsila