Neptunus

What Neptunus does

Neptunus Power Plant Services Pvt. Ltd. is a privately held, India-founded marine engineering services company established in 1996, headquartered in Navi Mumbai with operational subsidiaries in Ras Al Khaimah (UAE) and Gometz-la-Ville (France). The company provides integrated lifecycle support for marine and offshore fleets, combining capital equipment supply (Niigata and EMD diesel engines, Z-Peller propulsion systems, ship electrification, and marine clutches), comprehensive repair and overhaul services across nine OEM engine brands (Niigata, EMD, CAT, Yanmar, Wartsila, MAN, MTU, Bergen, Daihatsu), and proprietary condition monitoring technology. Its technology portfolio centers on the VIB360 Engine Condition Monitoring System (ECMS), TorqueSense shaft power measurement with ShaPoLi capability, Oil Quality Management System (OQMS), and Peak Pressure Monitoring — all receiving dual-class type approvals from ABS and IRS, which validates their use for class notation on vessels.

The company operates an enterprise field sales model targeting vessel owners, rig operators, ship management firms, and port operators through direct engagement with dedicated project managers, riding squads for on-site service, and a Navi Mumbai workshop facility. Neptunus has executed over 2,500 projects across 30+ countries for a stated base of 100+ customers, including ONGC, Svitzer, and a Qatar supply vessel operator. Its revenue model spans professional services (repair and overhaul), hardware sales (genuine OEM spares and capital equipment), and emerging subscription/recurring revenue from its technology solutions. OEM-authorized service provider status with Niigata (20+ years) and EMD (15 years exclusive) represents core commercial moats, supplemented by 30+ years of domain expertise and global service network presence at major maritime hubs across South Asia, the Middle East, Africa, Southeast Asia, and Europe. The company is bootstrapped and founder-owned with no disclosed external funding rounds.

Name

Neptunus

Legal name

Neptunus Power Plant Services Pvt. Ltd.

Website

https://neptunus-power.com

Company type

Private

Founded year

1996

Operating status

Operating

Headcount range

101–250 employees

Short description

Neptunus Power Plant Services is a privately held Indian marine engineering firm providing OEM-authorized engine repair, overhaul, spare parts, and proprietary condition monitoring technology (VIB360, TorqueSense) to vessel owners, rig operators, and port operators across 30+ countries.

Ownership category

akta.pro rank

Product category

Marine Engineering Services

NAICS

Ship Building and Repairing (336611), Engine, Turbine, and Power Transmission Equipment Manufacturing (3336)

SIC

Ship & Boat Building & Repairing (3730), Engines & Turbines (3510)

akta.pro primary industry

Propulsion MRO, Spares & Field Service (Overhauls, retrofits, upgrades) (IMAJAHAN)

akta.pro secondary industries

Propulsion, Shafting & Rudder Repair (Engines, Gearboxes, Thrusters) (IMAJAFAC), Marine Generators, Alternators & Power Electronics (Gen-sets, VFDs, converters) (IMAJAHAI), Cooling, Lubrication & Air Induction Component Rebuild/Remanufacturing (Oil pumps, water pumps, EGR) (TLAKALAK), Marine MRO Parts & Consumables Distribution (TLAKAOAJ)

Keywords

• Marine engine services
• Vessel propulsion maintenance
• Engine condition monitoring
• Offshore repair services
• Marine spare parts supply

Headquarters

HQ city

Mumbai

HQ country

India

HQ region

Asia

Offices4 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Repair & Overhaul Services: Comprehensive marine engine repair, overhaul, troubleshooting, inspection, and emergency repair services for main engines, auxiliary engines, generators, propulsion systems, gearboxes, bow thrusters, and propellers. Includes both on-site and workshop-based services.
2. Spare Parts Supply: Supply of genuine OEM spare parts for marine engines including Niigata, EMD, CAT, Yanmar, Wartsila, MAN, MTU, Bergen, and Daihatsu. Optimized spare parts planning to reduce unnecessary expenses while maintaining quality.
3. Technology Solutions: Proprietary monitoring and condition management solutions including Engine Condition Monitoring System (ECMS), Oil Quality Management System (OQMS), TorqueSense, and related sensors and software for asset reliability management.
4. Capital Equipment: Supply of new diesel engines (Niigata OEM, EMD OEM) and propulsion systems including Niigata Z-PELLER for new builds.

Pricing tiers

Go-to-market motion1 record

Distribution channels5 records

Marketing channels9 records

Core offering

Neptunus delivers end-to-end lifecycle support for marine and offshore diesel engines and propulsion systems, combining capital equipment supply (Niigata and EMD diesel engines, Z-Peller propulsion), OEM-authorized repair and overhaul services across nine engine brands, genuine spare parts supply, and proprietary condition monitoring technology (VIB360, TorqueSense, OQMS). Services span main engines, auxiliary engines, generators, bow thrusters, propellers, gearboxes, and cylinder grinding, delivered globally through on-site riding squads, workshops, and remote support to marine vessel owners, offshore rig operators, industrial power plants, and defense customers in 30+ countries.

Product overview

Neptunus Power Plant Services is a comprehensive lifecycle support partner for marine and offshore fleets, combining capital equipment supply, repair and maintenance expertise, and technology-driven solutions under an integrated platform. The portfolio spans capital equipment (diesel engines for new builds, propulsion systems, ship electrification, fuel systems, and marine clutches) alongside extensive repair and overhaul services for multiple engine brands (Niigata, EMD, CAT, Yanmar, Wartsila, MAN, MTU, Bergen, Daihatsu), supported by condition monitoring technology solutions (ECMS, TorqueSense, Oil Quality Management Systems) and genuine spare parts supply.

Differentiator

Problem solved

Functional benefit

Products and services

• Diesel Engine Repair and Overhaul Services Comprehensive repair, overhaul, troubleshooting, inspection, and commissioning services for marine diesel engines (main and auxiliary) across multiple OEM brands, delivered on-site via riding squads or in-house workshop for vessel owners, rig operators, and power plant customers.
• Diesel Generator Repair and Overhaul Services Generator set repair and overhaul services for Niigata, EMD, CAT, and Yanmar generators supporting vessel electrical power generation on marine vessels.
• Marine Propulsion System Repair and Overhaul Services Bow thruster, marine propeller, and marine gearbox repair and overhaul services for propulsion systems across Kamome, Niigata, Berg, Nakashima, Kawasaki, and Schottel brands, serving vessel maneuverability and thrust requirements.
• Marine Engine and Generator Spare Parts Supply Genuine OEM spare parts supply for diesel engines, generators, and propulsion systems across all supported brands (Niigata, EMD, CAT, Yanmar, Wartsila, MAN, MTU, Bergen, Daihatsu), with optimized spare parts planning to reduce unnecessary expenses while maintaining quality.
• VIB360 Engine Condition Monitoring System (ECMS) Proprietary dual-class (ABS and IRS) approved engine condition monitoring system providing real-time health monitoring and predictive maintenance insights for marine engines, with capability to detect defects months in advance to prevent unexpected failures.
• TorqueSense Torque and Power Measurement System ABS and IRS certified shaft power measurement system including Shaft Power Limitation (ShaPoLi), Shaft Torsion Meter with non-invasive sensor, and Propeller Efficiency Measurement for marine vessel performance monitoring and regulatory compliance.
• Oil Quality Management System (OQMS) Comprehensive oil quality management solution combining Oil Condition Monitoring (OCMS) real-time sensors with continuous Kidney Loop Oil Filtration System to extend lube oil life, reduce emissions, and enhance engine reliability.
• Cylinder Grinding Services Precision cylinder liner honing, valve seat lathe, and portable valve grinder services for engine maintenance and component reconditioning.
• Turbine Condition Monitoring Solutions Condition monitoring solutions for gas turbine and steam turbine engines, including Peak Pressure Monitoring System for real-time combustion analysis and performance optimization in power generation and industrial applications.
• Capital Equipment - Diesel Engines and Marine Propulsion Systems Supply of new OEM diesel engines (Niigata, EMD), Niigata Z-PELLER propulsion systems, Hitachi Nico marine clutches, D&A electric and hybrid propulsion solutions for vessel electrification, and Auramarine fuel systems for methanol, biofuels, HFO, and MGO applications.

Quantifiable outcome

• 30% faster turnaround time compared to OEM benchmark for engine repair and overhaul
• +5 more outcomes

Named customers8 records

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Four partnerships are on record, tiered core.

• Niigata (OEM Authorized)coreOEM/ Whitelabel/ Licensing PartnerNeptunus is an authorized service provider for Niigata marine engines and propulsion systems for over 20 years, offering OEM-authorized repair, overhaul, and spare parts services for Niigata engines including AXH, HX, and high-speed engine series. Also provides authorized Niigata Z-PELLER propulsion system services.
• EMD (OEM Authorized)coreOEM/ Whitelabel/ Licensing PartnerNeptunus holds exclusive OEM partnership with EMD (Electro-Motive Division of Caterpillar) spanning 15 years, established as India's leading repair specialists for EMD 710 and 645 series engines. Provides comprehensive overhaul services with OEM-trained marine engineers.
• American Bureau of Shipping (ABS)coreStrategic or Co-development PartnerABS has certified Neptunus's TorqueSense ShaPoLi system and MHM Tier 2 Smart Function technology. This certification validates the company's proprietary condition monitoring and measurement systems for marine applications.
• Indian Register of Shipping (IRS)coreStrategic or Co-development PartnerIRS has granted Class Type Approvals for Neptunus's VIB360 Engine Condition Monitoring System and TorqueSense ShaPoLi system, enabling classification society recognition for condition-based maintenance notation on vessels.

Scale indicators9 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Berg Propulsion: Marine propulsion manufacturer (controllable pitch propellers, thrusters). Listed among Neptunus's supported propulsion brands and serves similar vessel operators, making it a directly comparable propulsion service peer.
• Caterpillar Marine: Marine division of Caterpillar offering MaK and CAT marine engines with a global dealer and service network. Directly comparable to Neptunus's CAT engine repair, spare parts, and overhaul offerings.
• MAN Energy Solutions: Marine engine OEM operating the PrimeServ global service network. Directly comparable in authorized engine overhaul, retrofit, spare parts, and digital monitoring services for marine diesel and dual-fuel engines.
• Wärtsilä: The world's largest marine engine manufacturer and operator of a global marine service network. Wärtsilä Services competes head-on with Neptunus for engine overhaul, condition monitoring, and lifecycle contracts across Wärtsilä, CAT, and other brands.
• Niigata Power Systems: Japanese marine engine OEM and propulsion system manufacturer (Z-PELLER). Both a 20+ year OEM partner and a structural peer — competes for Z-PELLER and Niigata engine service work globally.
• Rolls-Royce Power Systems (MTU): Owns the MTU marine engine brand and operates a global marine service network. Directly competes with Neptunus on MTU engine overhaul and parts, with growing digital lifecycle offerings.
• Yanmar Marine: Marine engine manufacturer offering diesel and hybrid propulsion with associated service network. Directly comparable for marine auxiliary and propulsion engine overhaul and parts.

Broad incumbents

• Alfa Laval: Global marine equipment and service provider offering engine auxiliary systems, fuel treatment, and condition monitoring. Adjacent competitor in marine engine lifecycle services with a much broader industrial portfolio.
• Kongsberg Maritime: Broader marine technology and digital services incumbent with engine monitoring, vessel performance, and automation offerings. Overlaps with Neptunus in condition-monitoring and lifecycle services, but as part of a much wider portfolio.

Emerging players

• Hyundai Heavy Industries (Engine & Machinery): Korean shipbuilder and marine engine manufacturer (HiMSEN) with growing aftermarket service. Comparable on marine engine MRO for the Asian fleet and an emerging alternative to Western OEM service networks.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/channel/UC68TNnUPVNeO3dHmilvE_2g
• Facebookfacebook.com/neptunuspower
• LinkedInlinkedin.com/company/neptunus-power-plant-services-pvt-ltd
• Instagraminstagram.com/neptunus_power?igsh=amN3YjcwOXF1ZDgy

Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries2 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 Neptunus