Engineering & Design

Marine & Offshore Electrical & Control Systems Detailed Design

OEC Power & Control we specialize in delivering comprehensive detailed design services for marine and offshore electrical and control systems. From concept through to construction, our multidisciplinary engineering team ensures every project meets the highest standards of safety, reliability, and operational performance — while supporting industry goals for decarbonisation and future-ready electrification.

Our services include:

  • ▪️Complete electrical system design: End-to-end design of HV and MV power systems, power distribution networks, switchboards, MCCs, transformers, UPS systems, lighting, and auxiliary systems — all tailored to vessel type and operational requirements.
  • ▪️Integrated propulsion systems: Detailed engineering of diesel-electric propulsion systems, all-electric drive systems, and hybrid propulsion configurations, optimized for efficiency, redundancy, and emissions reduction.
  • ▪️Offshore electrification & decarbonisation: Design of shore power systems, battery energy storage, integration of renewable sources, and electrified solutions for offshore platforms and vessels to reduce reliance on fossil fuels.
  • ▪️Advanced automation & control: Engineering of power management systems (PMS), alarm monitoring, vessel control networks, and integrated automation systems for safe and efficient operation.
  • ▪️Cable engineering & routing: Development of cable schedules, routing plans, tray designs, and installation drawings, ensuring compliance with classification societies and industry standards.
  • ▪️Hazardous area design: Electrical and control system design for ATEX/IECEx hazardous zones, including equipment specification, certification, and risk mitigation.
  • ▪️Integration & interface engineering: Seamless integration of electrical and propulsion systems with existing mechanical, structural, and process disciplines to ensure coordinated, efficient project delivery.
  • ▪️Detailed documentation & deliverables: Comprehensive construction drawings, functional design specifications, load analysis, protection coordination studies, and commissioning procedures.

From offshore support vessels and tankers to advanced FPSOs, wind farm vessels, and electrified offshore platforms, OEC Power & Control delivers trusted, future-focused electrical and control designs that help our clients navigate the transition to cleaner, smarter, and more sustainable marine operations.

Power Systems & Substation Detailed Design 

We deliver comprehensive detailed design services for high and medium voltage power systems and substations — from 11 kV distribution networks to complex 400 kV transmission systems. Our designs prioritize reliability, safety, and long-term operational efficiency to support industrial, utility, and infrastructure projects worldwide.

Our detailed design services include:

  • ▪️Substation design (AIS & GIS): Complete design packages for air-insulated and gas-insulated substations, covering layouts, equipment sizing, busbar configurations, earthing systems, and civil interface requirements.
  • ▪️Protection & control systems: Development of protection schemes, relay settings, control logic, and integration into SCADA, ensuring fast, selective, and reliable fault clearance.
  • ▪️Primary & secondary engineering: Detailed single line diagrams, schematics, wiring diagrams, interconnection drawings, and panel designs.
  • ▪️Equipment specification & selection: Technical specifications for transformers, circuit breakers, disconnectors, instrument transformers, surge arresters, and auxiliary systems, ensuring compliance with IEC, IEEE, and local standards.
  • ▪️Grid integration & interconnection studies: Load flow, short-circuit analysis, transient stability, harmonic studies, and insulation coordination to ensure system performance and regulatory compliance.
  • ▪️Substation automation & digitalization: Design and integration of intelligent electronic devices (IEDs), communication networks, and automation systems for digital substations.
  • ▪️Earthing & lightning protection design: Detailed earthing grid calculations, soil resistivity analysis, and design of lightning protection systems to safeguard assets and personnel.
  • ▪️Documentation & construction support: Complete sets of design drawings, technical specifications, installation details, testing procedures, and on-site engineering support during construction and commissioning.

Whether modernizing an existing 33 kV distribution substation, designing a new 132 kV transmission node, or delivering complex multi-voltage 400 kV projects, OEC Power & Control provides trusted, end-to-end engineering solutions that power critical infrastructure safely and efficiently.

Mission Critical Electrical System Design

We provide expert detailed design services for mission critical electrical systems — built to guarantee continuous power supply, enhance operational resilience, and meet the highest industry standards for reliability and safety.

Our expertise covers:

  • ▪️Robust power distribution systems: Design of medium and low voltage systems, redundant power paths, transfer schemes, and critical load segmentation to protect essential operations from power interruptions.
  • ▪️Uninterruptible power supply (UPS) & standby power: Sizing and integration of UPS systems, backup generators, and automatic transfer switches (ATS) to guarantee seamless continuity for critical loads.
  • ▪️Power system studies & reliability analysis: Load flow, short circuit, protection coordination, arc flash analysis, and fault ride-through studies to optimize system safety and performance.
  • ▪️Control & monitoring systems: Advanced monitoring, SCADA integration, and alarm management systems to provide operators with real-time system visibility and rapid response capability.
  • ▪️Redundancy & resilience engineering: Design of N+1, N+2 and fully parallel architectures to meet or exceed Tier and uptime requirements for critical facilities.
  • ▪️Specialized environments: Electrical design for data centers, hospitals, energy installations, and other high-dependency infrastructure where downtime is not an option.
  • ▪️Documentation & construction support: Detailed design drawings, single line diagrams, functional specifications, installation details, commissioning procedures, and on-site technical assistance.

Whether it’s a data center, hospital, control room, offshore platform, or industrial process plant, OEC Power & Control delivers resilient, standards-compliant electrical system designs that keep your critical operations running—no matter the challenge.

Renewable Energy Systems – Detailed Design

OEC Power & Control offer comprehensive detailed design services for renewable energy systems — helping our clients transition to cleaner, more resilient and cost-effective energy solutions. From utility-scale solar farms and wind power plants to hybrid microgrids and combined heat and power (CHP) systems, we deliver engineering excellence that drives sustainable growth.

Our services include:

  • ▪️Photovoltaic (PV) systems: Detailed design of ground-mounted and rooftop solar installations, including DC collector systems, inverters, MV integration, and grid interconnection.
  • ▪️Wind power systems: Electrical design for onshore and offshore wind farms, covering collection grids, substation design, power export systems, SCADA integration, and protection schemes.
  • ▪️Hybrid & microgrid solutions: Engineering of advanced hybrid systems combining PV, wind, battery storage, CHP, and conventional generation for remote communities, industrial sites, and islands.
  • ▪️Combined heat & power (CHP) systems: Detailed design of electrical and control systems for CHP plants to maximize energy efficiency and reduce carbon footprint.
  • ▪️Energy storage integration: Design and specification of battery energy storage systems (BESS), inverter systems, and control strategies to enhance grid stability and flexibility.
  • ▪️Grid interconnection & compliance: Load flow analysis, fault studies, protection coordination, harmonic analysis, and compliance with utility and grid codes.
  • ▪️Control & monitoring systems: Design of energy management systems (EMS), SCADA, and plant control to enable real-time monitoring, optimization, and predictive maintenance.
  • ▪️Documentation & construction support: Full design packages, including single line diagrams, cable routing, equipment layouts, technical specifications, installation drawings, and commissioning procedures.

From concept to commissioning, OEC Power & Control delivers integrated, standards-compliant renewable energy designs that help our clients achieve energy independence, reduce emissions, and future-proof their operations.

Automation, Control & Instrumentation System Detailed Design

OEC Power & Control deliver comprehensive detailed design services for automation, control, and instrumentation systems — helping clients achieve safer, smarter, and more efficient operations across industrial, marine, energy, and infrastructure sectors.

Our services include:

  • ▪️Integrated control system design: Complete design of DCS, PLC, SCADA, and HMI systems, covering architecture, hardware engineering, software functional specifications, and network design.
  • ▪️Instrumentation engineering: Selection and specification of field instruments for process monitoring and control, including transmitters, analyzers, valves, and actuators, ensuring compatibility and compliance with industry standards.
  • ▪️Control panel design: Detailed design and layout of control panels, marshalling cabinets, and junction boxes, including wiring diagrams, termination details, and heat dissipation analysis.
  • ▪️Signal & I/O engineering: Design of field cabling, signal routing, I/O allocation, and redundancy strategies to ensure robust and maintainable systems.
  • ▪️Safety & emergency systems: Engineering of safety instrumented systems (SIS), fire & gas detection, ESD systems, and development of cause & effect matrices aligned with SIL requirements.
  • ▪️Process automation & optimization: Advanced process control strategies, sequence logic development, and integration with asset management systems to enhance operational efficiency.
  • ▪️Integration & interface engineering: Seamless integration of automation systems with electrical, mechanical, and process equipment, ensuring reliable end-to-end performance.
  • ▪️Documentation & deliverables: Comprehensive design deliverables including P&IDs, loop diagrams, control narratives, cable schedules, installation drawings, and test procedures.

From offshore platforms and industrial plants to renewable energy assets and utility facilities, OEC Power & Control provides detailed automation and instrumentation designs that reduce risk, enhance safety, and deliver measurable operational value.

Building Services Electrical Systems & MEP Detailed Design

We deliver building services electrical and MEP detailed design solutions for complex, high-profile projects. Our team brings proven expertise in designing reliable, efficient and code-compliant systems across diverse sectors – including hotels, hospitals, educational campuses, high-rise commercial towers, and high-end residential developments.

We ensure every design integrates seamlessly with architecture and building operations, focusing on occupant comfort, safety, energy efficiency, and future-ready adaptability.

  • ▪️Electrical power distribution – HV/LV design, substation integration, lighting, emergency power and UPS 
  • ▪️ELV & specialist systems – structured cabling, security, fire alarm, BMS

Whether supporting a new hospital wing, a landmark hotel, or a signature mixed-use tower, our detailed designs help clients achieve reliable operations, reduced lifecycle costs and world-class occupant experience.

Marine Electrical & Control Systems Design

OEC provides marine electrical & control engineering services since the inception of the company and has been our primary service for a number of years. Our extensive experience and the expertise in the sector benefit clients with optimum solutions for their requirements considering the economics and technical performance.

  • Marine HV /LV power and propulsion system design and review
  • Power and propulsion system dynamic simulations
  • Independent design review and verification
  • FMEA/FMECA of critical systems
  • Power management systems, Integrated Alarm and Monitoring Systems (IAMS)
  • Navigation, communication and other vessel systems
  • Hazardous area classification and electrical equipment selection
  • Small vessel and boats 12V DC  system design

Power System Design and Analysis

Power system consulting services are provided for utility scale, industrial, commercial and renewable energy projects.  

We use ETAP, ATP-EMTP software for power system studies.

  • MV/HV network design
  • MV/HV substation design
  • Power system studies
    • Load flow
    • Short circuit
    • Harmonic
    • Transient stability
    • Switching transients
    • Protection coordination
  • Grid interconnection compliance studies
  • Feasibility analysis for renewable energy projects
  • Earthing system design

 

Electrical, Control & Instrumentation Design

OEC offers a range of electrical, control and instrumentation  engineering and consulting services for oil and gas, chemical, water and wastewater, process and renewable energy sectors.

  • Electrical design for LV power distribution
  • LV switchgear, Motor Control Centre (MCC) design
  • Control panel design and build
  • Earthing system design
  • Lightning protection system (LPS)
  • Cable containment
  • Hazardous area classification and equipment selection
  • SIL systemd design, study and verification
  • Lighting design
  • PLC (Programmable Logic Controller) based control systems
  • Supervisory Control & Data Acquisition (SCADA) Systems
  • Process control systems and instrumentation
  • Industrial communication systems (Profibus, Ethernet, Modbus)
  • Concept, FEED and detailed design
  • HAZOP studies
  • Project engineering and supervision
  • Project commissioning

Marine Engineering

We provide a comprehensive range of marine product engineering services from concept to detailed level for new build and retrofit projects. We use cutting-edge production software and highly skilled operators, delivering a holistic solution for diverse vessel types.

3D Modelling & CAD

We provide a comprehensive array of multidisciplinary plant modeling services. Our team comprises expert CAD professionals and design engineers who work closely with EPCs, engineering consultancies, and OEMs to provide top-notch 3D modeling services. Leveraging their extensive on-site expertise, they generate digital models that replicate real-life walkthroughs, offering a thorough comprehension of the facility well before construction commences.

We use number of industry standard softwares such as Autocad and Solidworks.