Energy vigilance brings further cost and carbon efficiencies
Many of our steel plants in Europe are at a good level in terms of energy efficiency. And yet our colleagues are always looking for further improvements. A simple example in 2016 comes from Dabrowa Gornicza (Poland), where the installation of 11 variable speed drives (VSD) on different motors across the site, is expected to deliver electricity cost savings of over 250 times the investment in the first year.
Being able to control the speed of a motor and therefore the power supplied to it means that we can reduce the rotational speed of the motor to just what is needed. Since motors drive a large number of fans and pumps in a steel plant, even a small reduction in each can add up to a significant amount of energy and carbon savings. In the case of DG, the new VSDs will save an estimated 24,000 tonnes indirect CO2 emissions from reduced electricity each year.
In total, our energy related investments in Europe Flat Products totaled €18.5 million in 2016 – generating a total of 135,000 tonnes CO2 reduction (scope 1 and 2) on an annual basis.