Project Description

Energy optimization project

Superyacht Seven Seas


ClimaCheck is used on a superyacht where the chillers consumed a total of 863 526 kWh/year, before optimisation. The redundancy was
also questionable due to bad performance of several of the chillers.

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-26% energy consumption

-225 000 kWh/year

Decreased CO2 emission with
200+ ton


Power consumption and reliable system is always important. On cruise ships and superyachts, it is even more important. The energy is expensive, and the CO2 emission is high. And customer satisfaction is the number one priority, to keep the business going. Air-conditioning and refrigerant systems are therefore crucial. A failure might result in the need of returning to port earlier than expected which, will result in huge economical and commercial losses.


ClimaCheck online has been installed to collect and analyse baseline data, to get system performance and identify what can be done to optimise the system.


Data from ClimaCheck online The energy consumption per day is shown with red bars. The energy signature from pre-optimisation is illustrated in blue. The new energy signature after the initial adjustments (left arrow) is shown with a red line. The energy savings is “between” the blue line and the red bars.


Based on the information from ClimaCheck online, initial measures were made to increase system performance and reliability. It resulted in decreased energy consumption with 125 000 kWh, and a more reliable system (left arrow). Working with optimisation is a process and another set of corrective measures was done (right arrow), to deal with additional problems. It was possible to decrease the energy consumption another 100 000 kWh. The improvements can be seen to the right in the graph. So far, the total energy saving is 225 000 kWh/year and the HVACR-system is working much better with a
decreased risk of failure.

Project details

Client: Superyacht Seven seas
System: 4 Chillers, Fridge System, Freezer System. Yearly energy consumption 863 526


  • Retail

    45,000 sq.ft. Grocery Store

    The estimated yearly energy consumption of the Refrigeration System is now approximately 654,000 kWh which represents an energy saving of approximately 123,000kWh per year (approximately 16% energy saving)

  • Retail

    Supermarket, Portland, Oregon

    Measurements supervised and analyzed by third party consultants over the following week, with similar climate conditions, proved that an energy saving of 25% had been achieved.

  • Hospitals

    Banner Desert Medical Center

    ETC Group conducted chiller testing using a portable ClimaCheck chiller analyzer at Desert Medical center on chillers 3, 5, and 6. Sections 2 and 3 include details for each measure