Electrical integration

Marine energy storage integration

An energy storage system (ESS) is designed to enhance the overall operation of your rigs or vessels. The system ensures substantial emission reductions as well as reductions in fuel and maintenance costs.

An ESS system is integrated with conventional diesel engines, and offers significant efficiency improvement by running the engines optimal load and absorbing many of the load fluctuations through batteries.

By increasing the power redundancy, the system allows the engine to operate with the highest efficiency and lowest emissions, which will result in reduced maintenance need and increased system performance.

ESS systems is suitable for new projects, as well as retrofits of existing installations, and can be used when the vessel is at shore, either self-supplied or in combination with shore power. 

Your partner in ESS integration

PSW Power & Automation provides turnkey projects for your energy storage vessel integration involving: design and manufacturing, testing and class approvals of energy storage container solutions, yard and logistics and also complete mechanical and electrical integration on vessel/rig.


  • Spinning Reserve
  • Electric and hybrid propulsion systems
  • Power back-up
  • Peak-Shave


  • Adapt to industry and operator requirements
  • Investment incentives from Enova / NOx fund
  • Optimized engine operation
  • Fuel saving and reduced emissions – Nox, CO2 and Sox  (Yearly fuel savings between 10-20%)
  • Increased redundancy and efficient operations
  • Reduced maintenance costs
  • Increased performance
  • Reduced OPEX by lower fuel consumption
  • Safer operation
  • Faster dynamic response
  • Retrofit. Existing rigs may replace diesel generator sets with battery technology.
  • Cranes. Stored battery energy supplies peak load conditions, braking energy can be used to charge the battery source
  • Energy storage using batteries supports running of the diesel engines at optimum specific fuel consumption

Read about the experience one of our customers has made after installing energy storage onboard the vessel.

EIT – offshore and yard

Specialist in electrical services

PSW Power & Automation has specialized in EIT for offshore installations and rig upgrades. We have considerable experience with turnkey projects within electrical and automation systems, and offer a wide range of specialist services.

PSW Power & Automation aim to deliver responsive, cost effective projects and have the knowledge and experience to pursue operational excellence.

We provide specialists within electro and automation:

  • PRESAFE/ DNV authorized EX workshop
  • Design, fabrication & certification of EX systems
  • Design, fabrication & certification of pressurized systems
  • Periodical inspections is performed according to IEC 60079-17 & DNV GL-OS-D201
  • Workshop & service department on Ågotnes and Mongstad
  • Electrical & automation technicians
  • 5 year SPS electrical survey
  • VFD’s and transformer solutions
  • Electrical installations and modifications on & offshore
  • Fiber – optical systems

PSW Power & Automation also deliver services within EX maintenance and periodical inspections, and our PRESAFE Authorized workshop/department is equipped to handle re-certifications and design of new systems for hazardous areas ( Exe, Exd, Exp, Exi)

Electrial infrastructure

PSW Power & Automation provide engineering, planning and installation of high- and low voltage connection to the grid system.

  • High voltage step-down transformers
  • High voltage switchgear
  • Cable installation included civil work
  • Turnkey provider of grid connection projects

Authorized electrical contractor

  • Authorized electro contractor – Direktoratet for Samfunnssikkerhet & Beredskap (DSB)
  • DNV/Presafe certified EX workshop
  • EKOM authorized – Elektroniske Kommunikasjonsnett (PT)

PSW Power & Automation has the following relevant DSB approvals:

Distribution systemsLow voltage
EX certified areasElectrical systems
MachinesElectrical systems
MaritimeHigh voltage
MaritimeLow voltage
IndustryLow voltage
Cable constructionLow voltage
Building/constructionLow voltage
Building/ constructionHigh voltage
Distribution systemsHigh voltage
Singel high voltageOperation and maintenance