Germany's Heat Pump Market Heats Up
Germany is embracing large-scale heat pumps, opening a fast-growing market for international technology companies in the heart of Europe.
July 23rd 2026: Heavy clouds darkened the skies over Cologne, but the mood on the banks of the Rhine was anything but gloomy, as German Economics Minister Katherina Reiche inaugurated the main construction phase of what is set to become Europe's largest river-water heat pump. When the 150 MW facility comes online in 2028, it
will supply some 50,000 Cologne households with climate-neutral district heating, saving approximately 100,000 tons of CO₂ each year.
The Cologne project is a striking illustration of how quickly the market for large-scale heat pumps is expanding in Germany. The Fraunhofer Research Institution for Energy Infrastructures and Geotechnologies (IEG) forecasts that by 2045, large-scale heat pumps will account for around 70 per cent of heat supplied through German district networks.
“Germany is emerging as one of the most dynamic international growth markets in this sector,“ says Bénédicte Winter, an energy expert at Germany Trade & Invest (GTAI).
The projects are being driven by both municipal utilities and private energy providers. They’re intent on transforming existing district heating networks, many still reliant on natural gas, into climate-neutral systems. They also want to build new networks from scratch.
Read this article to find out:
1. Why Germany is a dynamic growth market for large-scale heat pumps.
2. Where the biggest opportunities lie for suppliers and project developers.
3. Which flagship projects are driving interest from investors.
Heating up the market
The sheer investment volume of the EUR 280m of the Cologne project underscores the strategic importance of large-scale heat pumps for Germany's energy transition. The Institute of Energy Economics at the University of Cologne (EWI) predicts that installed thermal capacity of large-scale heat pumps in Germany could rise from around 200 MW today to 1,150 MW by 2030 – a near sixfold increase.
Some 90 per cent of that planned capacity is earmarked for district heating networks serving households and offices. Industrial process heat, meanwhile, represents a growing and technologically more demanding segment.
Projects are now taking shape where reliable heat sources – such as river water from the Rhine – are near heating networks. Seawater, treated wastewater, industrial waste heat, geothermal energy and heat from data centers and server farms are also playing an increasingly important role.
Large-scale heat pumps are the widely preferred solution for decarbonizing heat supply. Producing heat without combustion, they
can replace fossil-fuel-based heat generators in district heating networks and industrial processes. The actual CO₂ savings depend on the carbon intensity of the electricity powering the compressor: the greener the electricity mix, the better the environmental balance.
“Interest in large-scale heat pumps for industrial process heat is growing in Germany. This segment is particularly attractive to innovative companies.”
Networks of opportunity
Irish company Johnson Controls, a manufacturer of heat pump technology for municipal infrastructure and industrial applications, has established itself as a partner in Germany's transition to sustainable heat and is already active in several major projects across the country. Among them is a 60 MW heat pump in Hamburg that draws on wastewater heat. It’s expected to save up to 66,000 tons of CO₂ annually and supply renewable heat to more than 39,000 households.
District heat pumps can offer energy providers significant economic and environmental benefits, says Michael Daimer, general manager Central Europe at Johnson Controls. “With the right policy frameworks and funding mechanisms, large-scale heat pumps are now becoming a key component of Germany's heat transition.”
GTAI expert Winter sees a wide range of market entry opportunities for international investors. In Germany, large-scale systems are primarily deployed in district heating networks, but interest in heat pumps for industrial process heat is growing steadily. This segment is particularly attractive to innovative companies seeking to develop new applications and push into higher temperature ranges.
Agile, adaptable technologies
Norwegian provider Heaten and Austrian company Ecop both specialize in industrial process heat. Ecop takes a different approach from many established manufacturers: The company uses rotation rather than conventional compression to generate heat.
Fabian Sacharowitz, CEO of Ecop, highlights the technology's flexibility as a key selling point for industrial customers. “Our pump can be used across a very wide temperature range and enables diverse applications.”
Nor is the opportunity confined to manufacturers of complete pump systems. Demand is growing for compressors, steam and hot-water
modules, storage technology and sensor and control systems. Components that enable flexible operating modes are especially sought after.
For international hardware and software providers, the primary opportunity lies in solutions that can be integrated into existing heating and industrial processes. Public funding is easing market entry – and making large-scale heat pumps an increasingly integral part of Germany's heat supply.
FDI Insight
Municipal Utilities: Gateway to Germany's Heat Transition
By Bénédicte Winter, GTAI
Germany's Stadtwerke – municipal utility companies owned and operated by local authorities – form the backbone of the country's energy infrastructure. Responsible for supplying electricity, gas, drinking water, and heat to homes and businesses, these 1,500 or so companies constitute one of the densest networks of local utility providers anywhere in the world.
Their role in Germany's transition to clean energy is particularly significant. Around 70 per cent of Germans rely on gas or district heating to warm their homes. And district heating networks are predominantly a municipal affair. Of the approximately 3,800 such networks across the country, the majority are under municipal ownership.
For suppliers of large-scale heat pumps, this makes the Stadtwerke an indispensable source of potential customers and project partners. Companies looking to enter the German market would do well to engage with municipal utilities at an early stage.
Interested in the German heat pump market?
Bénédicte Winter
GTAI