As operators strive to save fuel and lower costs, Ecomar’s custom-designed energy saving programmes can help. Juha Gäddnäs, operation manager, explains how the process works – from initial consultation to onboard implementation.

Energy saving is a major point of focus across the maritime industry. More operators are intent on reducing their fuel consumption, realising that lowering emissions is not just good for the environment; even a slight reduction can have a dramatic impact on the bottom line. They are therefore on the lookout for solutions that integrate well with existing systems and improve efficiency in a tangible, measurable way, helping to meet environmental targets at the same time as cutting costs.

Ecomar’s energy saving programmes (ESPs) have been designed for precisely this purpose. A Finnish organisation with broad-ranging services, the company is well placed to understand operators’ needs. With solutions including feasibility studies, conditions surveys, thermographic inspections, engineering, turnkey projects and energy-saving consultancy, Ecomar endeavours to keep client satisfaction at the top of the agenda.

The ESPs in question represent a complete solution from survey to implementation. They can consist of:

  • auxiliary systems optimisation
  • electrical load analysis
  • ventilation efficiency optimisations
  • integration of equipment for energy saving purposes.

Status update

The first step is an initial discussion, ascertaining what the operator has done so far and what they are hoping to achieve. This will assess their views on energy savings and their particular areas of focus, as well as the ROI figures they deem acceptable.

The conversation will also identify systems with the potential for energy savings, review existing systems, uncover any possible restrictions in operation, and note any relevant patterns based on voyage reports. All the while, Ecomar will honour the owner’s specific requests.

The company will then move onto an onboard survey, during which energy consumption and existing systems are logged. The main engine and generator loads are recorded as standard, in order to verify the load at different operation modes.

As an example, the following parameters have been included in a survey of this kind:

  • SW pumps
  • FW cooling pumps
  • engine room fans
  • sewage treatment plants
  • lightning distribution
  • circulation pumps
  • compressors
  • galley equipment
  • HVAC.

This data is compiled in an easy-to-read format, with baseline facts and figures included alongside the actual measured values. These are intended to give full transparency to calculations and provide some insight into the savings achievable. Next, the overall energy consumption is calculated per voyage and presented in the following modes:

  • harbour mode
  • manoeuvring mode
  • sea mode.

Based on these logged values, it is possible to calculate the actual energy consumption per consumer, per year, in kWh, MT fuel, CO2 emissions and cost. The data is presented in numerical and graphical formats.

Ecomar then works out how much could be saved through making modifications to the system. Comparing the two sets of data, it clearly sets out what is possible, factoring in an estimation of the modification cost and ROI.

Rolling out the solution

The final stage is implementation. Once the process with the highest energy savings has been identified (for example, frequency converters for SW pumps), Ecomar can take care of the complete implementation process. Starting with drawings, the company moves on to material and equipment selection and approval, and finally onboard installation.

The results are striking – tailor-made solutions for each ship that optimise the onboard systems and maximise environmental efficiency. Operators can be satisfied they are getting the right ESP for them, and saving money in the process.