Mäkelä Alu’s sustainability journey with Calefa
The world’s cleanest aluminum profiles are produced in Finland. Calefa is one of the longterm partners supporting the familyowned manufacturer Mäkelä Alu on its sustainability journey.
Calefa Smoothly Integrates Natural Refrigerants into Heat Pump Technology
The purpose of the EU’s revised F-gas regulation is to gradually reduce the use of fluorinated greenhouse gases. For Calefa, the transition to natural refrigerants is a consistent part of the company’s heat pump technology development.
Calefa Continued Its Strong Growth in 2025
The year 2025 was, in many ways, historic and successful for Calefa. Robust product development in both heat and steam production has laid a solid foundation for continued future growth.
Full Steam Ahead: Calefa Oy launches a waste heat-powered steam heat pump
The new AmbiSteam® solution offers a modular, turnkey system for producing process steam above 5 bar with exceptional energy efficiency and even completely emission-free operation. It is based on Calefa’s SteamLevel® heat pump, which enables industrial steam production from waste heat—among the first in Europe.
Calefa Oy’s Heat Pump Plant for Savon Voima wins Heat Pump City of the Year Award
The AmbiHeat heat pump plant, built to Savon Voima’s Joensuu power plant, is the first of its kind in Europe in terms of its overall solution. It innovatively utilizes both waste heat from flue gas scrubber and river water as heat sources.
Energy company smokestacks fell silent in four Finnish towns over the summer
Over this summer, four Finnish energy companies shut down their combustion-based heating plants. In cities like Seinäjoki, Kankaanpää, and nearly all of Lahti, summer heat demand was met entirely through non-combustion methods — excluding the use of gas in small-scale facilities. In Loviisa, combustion units were also occasionally taken completely offline.
Calefa Receives a Significant Equity Investment from Evli Private Capital to Accelerate Growth
The equity investment from Evli Private Capital, a part of the Finnish Evli group, strengthens the already diverse resources of Calefa and opens opportunities for achieving long-term goals.