• Helsinki will install the world’s largest 33 MW air-to-water heat pump, heating 30,000 homes and reducing emissions by 26,000 tons annually.
  • The Patola plant will include two 50 MW electric boilers, cutting overall emissions by 56,000 tons yearly.
  • Backed by the Finnish government, the project will launch in 2026-2027 and support Helsinki’s carbon-neutral goals.

Helsinki, Finland, is set to use the world’s largest air-to-water heat pump, built by MAN Energy

Finland’s capital, Helsinki, is taking a big step towards reducing carbon emissions. MAN Energy Solutions has been commissioned by energy company Helen Oy to supply the world’s largest air-to-water heat pump. 

The heat pump has a capacity of 33 MW and will play a key role in heating around 30,000 homes. Powered by renewable electricity, it will use ambient air to generate heat, even in freezing temperatures as low as -20°C. This is crucial for a city like Helsinki, where winters can be harsh. By relying on green energy, the plant will lower the city’s CO2 emissions by 26,000 tons each year.

In addition to the heat pump, the Patola plant will feature two 50 MW electric boilers. Together, they are expected to reduce total emissions by 56,000 tons.

Juhani Aaltonen, VP of Green Investments at Helen, said:

“Helsinki has set the ambitious goal to become carbon neutral by 2030, and transitioning our heating system is crucial to achieving this. Once completed, the heat pump plant will significantly reduce the CO2 emissions caused by heating, bringing us closer to our net-zero target. In addition, the new plant is likely to create price stability for customers, as its production is easily adjustable.”

The Finnish government is also backing the initiative, offering an energy subsidy for the plant. Operations will begin during the 2026-2027 heating season.

Could we be venturing towards a future where entire cities are powered by just a few heat pumps?