Engineered Systems NEWSHVAC RetrofitsCase in Point

Swedish electricity supplier embraces sustainable retrofit solution

An ABB case study

**Malarenergi & ABB : ABB future-proofs Swedish cogeneration plant with retrofit solution and contributes to its goal of net zero emissions of fossil carbon dioxide.**
*All images courtesy of ABB*

As part of its efforts to achieve net zero fossil carbon dioxide emissions, Mälarenergi has partnered with ABB to upgrade its switchgear with retrofit solutions at its cogeneration plant in Västerås.

By replacing the plant's aging circuit breakers with modern Emax2 models — featuring Ekip Hi-Touch relay protection and energy metering — the electrical circuits are not only fully protected but also feature new technologies that reduce energy consumption, saving valuable time, costs, and resources. It also means most of the critical infrastructure has had its life span extended, avoiding manufacturing an entire new system, which means less emissions and costs.

Mälarenergi's cogeneration plant in Västerås is one of Sweden's largest and plays an important role in the sustainable development of the city, with 98% of all properties in the locality connected to the district heating network. Only renewable and recycled fuels are used in the cogeneration plant, which produces 1800 GWH of heat and 700 GWH of electricity annually and has been continuously upgraded with modern technology to maximize uptime and minimize environmental impact since the 1960s.

Malarenergu & ABB 2: As part of its efforts to achieve net zero fossil carbon dioxide emissions, Mälarenergi has partnered with ABB to upgrade its switchgear with retrofit solutions at its cogeneration plant in Västerås.

"This retrofit project is a step in our journey toward achieving net zero emissions of fossil carbon dioxide,” said Rolf Bäckström, maintenance engineer at Mälarenergi. “The fact that we are doing it together with a supplier who is on the same sustainability journey as Mälarenergi feels extra special.”

Malarenergi & ABB 3: With regular maintenance and monitoring of the new components, the life of the plant's switchgear can now be multiplied indefinitely without the need for replacement

The retrofit, which was carried out in three stages with customized solutions required for each of the switchgear cabinets, also resulted in operational benefits for the plant. By modernizing its electricity system and upgrading the switchgear with up-to-date electronics that will work for many years to come, Mälarenergi can avoid unplanned downtime, maintain predictable delivery to its customers, and increase safety for both personnel and equipment.

“By modernizing its electricity system and upgrading the switchgear, Mälarenergi is reducing its total cost of ownership, maximizing the return on investment, and avoiding unplanned downtime,” said Amer Filipovic, project manager for ABB’s Electrification Sweden business area. “Using this method, we've seen some of our customers' facilities reduce equipment operating costs by a third while extending their life cycle by as much as 30 years.”