New LED bulbs save 1 GWh annually at Hydro’s aluminium plant in Sunndal, Norway
Hydro Sunndal, Norway's largest aluminium smelter and electricity consumer, has completed a major lighting upgrade, replacing outdated incandescent lamps with smart LED bulbs in one of its electrolysis halls. The improvement, which was led by Hydro Rein, will save approximately 1 GWh – or 1 million kWh – of electricity annually.
The project was led by Hydro Rein's Energy Solutions team, working closely with Hydro Aluminium. A total of 322 new LED lamps were installed, reducing electricity consumption by 70% while providing 3-6 times higher brightness. Beyond the energy savings, the upgrade significantly enhances working conditions and safety for employees.
"Efficient energy use is crucial for our competitiveness. While Hydro Sunndal has been focused on energy efficiency for years, this project demonstrates that new technology and smart solutions can help us achieve even greater savings. Reducing electricity demand not only benefits Hydro but also has positive environmental impacts for the community," says Wenche Eldegard, Plant Manager at Hydro Sunndal.
Combining sustainability and economic benefits
Hydro Rein played a key role in planning and implementing the project.
"This initiative exemplifies how economic and environmental goals can align. Norwegian industrial companies have substantial opportunities to save energy, and this project showcases the impact of investing in energy efficiency and workplace improvements," says Marianne Wergeland Jenssen, Head of Energy Solutions for Industry at Hydro Rein.
By integrating sustainability with operational efficiency, Hydro continues to lead by example in promoting innovative solutions that benefit both the industry and the environment.
Lighting the way to sustainability
The transition to LED technology in Electrolysis Hall 3 is the first step in a broader energy efficiency initiative at Hydro Sunndal. The upgraded lighting improves visibility, reduces maintenance needs, and enhances workplace safety by minimizing risks associated with poor illumination.
"With stronger and more consistent lighting, machines, tools, and work areas are more visible, reducing the risk of workplace accidents. Proper lighting also alleviates eye strain, headaches, and fatigue, creating better conditions for focus and performance – particularly important for shift workers. At Hydro, safety always comes first, and this project is an important step in optimizing our working environment," says Wenche Eldegard.
Learn more about Hydro Rein Energy Solutions