The Conservation Fund provides financial support for innovative electricity conservation technologies, practices, research, and programs that will help Ontario reach its long-term energy conservation goals.
Finding new ways to save energy with lighting and cooling
ArcelorMittal Dofasco Plant
A steelmaker sees energy partnership as key factor in helping them stay competitive
ArcelorMittal Dofasco is Canada’s largest producer of flat carbon steel – that means they use a lot of energy.
In 2012, the company launched two pilot projects funded by the IESO Conservation Fund. One tested new LED lighting technology in the extreme conditions of a hot steel mill, while the other examined ways to more efficiently cool large industrial motor systems.
About the Projects
After encountering many obstacles in trying to retrofit their older-style, high-intensity discharge (HID) metal halide lighting, ArcelorMittal Dofasco decided to experiment. They worked with Canadian company Back to Earth, which developed an array of special energy efficient LED ceiling fixtures that both reduced the company’s wiring and installation costs and eliminated a significant heat load on the LED arrays.
Another chance to save energy came with improving the efficiency of the plant’s motor-cooling systems. The challenge was in ensuring the large production motors were protected from overheating and damaging the mill motor. With a Conservation Fund investment, ArcelorMittal Dofasco engineers carefully designed and applied a variable speed drive controlled fan to a single large, 5,000 HP motor to optimize cooling air flow, while keeping the test motor protected and safe.
The majority of industrial facilities constructed over that past 20 to 30 years in Ontario employ fixed-flow air cooling of large motors. ArcelorMittal Dofasco’s motor-cooling pilot could lead to the adoption of this approach in industrial facilities across the province and drive major reductions in energy consumption.