Implementation of energy-efficient solutions at the facilities of Re Alloys

Project objective:

The project objective was to implement energy saving solutions at Re Alloys consisting of replacing a transformer, changing illumination, introducing cooling of open water circulation.


PLN 5,324,780.38


PLN 4,956,747.47


Write-off  PLN 2,000,000.00
Loan PLN 2,956,747.47


01.09.2022 – 31.08.2023

Subject of the project:

Replacement of a 40MVA transformer with a more energy efficient unit
Due to the fact that the transformers of the highest power generate high no-load losses, it has been decided to replace a 40MVA transformer with a more energy efficient one. Within the above-mentioned decision, a modern, more energy efficient unit has been bought, installed, and launched. Thanks to this, losses are going to be reduced, what will translate into reduction in energy consumption and improvement of power supply safety for the entire Plant and production equipment.

Cooling of open water circulation for 22nd and 23rd furnace
Pumping station of 4th furnace building operates in an open cooling system for 22nd and 23rd furnaces. Pumps and draught cooling towers were not equipped with an automatic system, load control, or remote control system. The entire pumps operation and the number of operating cooling towers is controlled manually by the staff supervising the operation. Modernisation of the open water circulation for 22nd and 23rd furnaces involved application of automatic adjustment system, work parameters are automatically adjusted to instantaneous demand caused by the variation of ferroalloys production process, also by changing weather conditions directly affecting the temperature of cooling water. Work parameters are adjusted automatically by a frequency converter, the pumps constantly maintain the set pressure of cooling water in the open circulation. Cooling tower rotation speed regulation aims at maintaining the set temperature of cooling water on the return tank of the open water circulation.

Replacing illumination of the Plant with the energy efficient one
At Re Alloys in Łaziska Górne, in 13 spots on the company’s premises, lights were replaced with energy efficient ones. In total, 1,207 lights were replaced. The scope of works included: lighting system inspection, disassembly of 147 mercury lamps, 377 sodium lamps, 488 fluorescent fittings, 195 tungsten lamps, delivery and assembly of 1207 lamps, carrying out illuminance measurements and electric shock protection effectiveness, also drawing up reports on the works and measurements conducted.

Results of the project 

As a result of this endeavour, it is estimated that the environmental effect in a form of reduced CO2 emission to air at the level of 1,176.004 kg/year will be achieved,  including:

  • replacing of the transformer – 103,688 kg/year,
  • cooling of open water circulation– 783,854 kg/year,
  • replacing of illumination – 288,462 kg/year.

What is more, energy consumption is to be limited. Savings from all the measures will amount to 1,684 MWh/year.

Source of financing:

The project is co-financed by the funds of the Regional Environmental and Water Management Fund (WFOŚiGW), including by write-offs of a loan in the amount of PLN 2,000,000.00 and by a granted loan of PLN 2,956,747.47.