Projects & Engineering
Energy-Saving System
Hoyer's Energy-Saving System (ESS) automatically adjusts fans and pumps to actual operating demand, helping customers reduce energy use, lower emissions and improve efficiency without compromising performance.
The Technology
Optimise Fuel Consumption
with Hoyer VMS ESS
Hoyer VMS ESS is a highly customisable application for marine and industrial equipment, combining variable speed drives (VSDs), sensors and automation to significantly reduce energy consumption and optimise the operation of cooling pumps and engine room fans.
The system analyses real-time data and dynamically adjusts the speed of fans and pumps via frequency converters to match actual operating demand such as operating speed, temperature and ventilation requirements.
40–65%
reduction in energy consumption, depending on
application and operating conditions.
Drive Operational Efficiency
Integrated Vessel Application
Hoyer VMS ESS is a highly customisable application for marine vessels that combines the use of Variable Speed Drives (VSDs), sensors, and automation.
Dynamic Data Analysis
The system analyzes real-time data to dynamically adjust the speed of fans and pumps via frequency converters, ensuring performance matches actual operational demands.
Adaptive Operational Control
Speed adjustments are automatically managed to align with critical variables, including sailing speed, water temperature, and specific ventilation requirements.
Performance Efficiency
The solution is engineered to reduce energy consumption by ensuring that cooling pumps and engine room fans operate at the exact capacity required for current conditions.
Customer case
Significant Savings in Operation
A European shipowner retrofitted their vessel with Hoyer VMS ESS to optimise energy use across
engine room fans and cooling pumps. The result was significant reductions in energy consumption, fuel use,
emissions, and a payback period of less than two years.
Implemented Across
4 engine room fans
3 seawater cooling pumps
3 LT freshwater cooling pumps
Total Savings
1,416,832 kWh/year
Energy saved
290.5 tons/year
Fuel saved
$169,283/year
Annual cost savings
Environmental Impact
628.4 tons/year
CO₂ reduction
12.1 tons/year
SOx reduction
20.1 tons/year
NOx reduction
Return on Investment
$280,000
Total investment
1.65 years
Payback period
55%
Annual ROI post-payback
Download Whitepaper About
Hoyer VMS ESS
Want to Explore Your
Savings Potential?
Our specialists can help assess your vessel setup, identify relevant applications, and advise on the right Hoyer VMS ESS solution for your energy optimisation project.