Salzburg Energy Tech EnerCube Forms Strategic Partnership With Panasonic

Salzburg’s EnerCube has struck a strategic partnership with Panasonic to build a new, more powerful line of prefabricated heat-pump heating units. The pitch is simple: take the boiler-room headache out of big buildings and ship in a ready-made box instead.

That box is the company’s Cube, a fully equipped heating unit that sits outside the building and plugs into the existing heating system. Everything important is preinstalled at the factory: heat pumps, controls, heating tech and sound insulation. EnerCube says the unit takes up about the space of a parking spot, stands roughly 2.6 meters tall, and can also handle cooling and hot water. Buyers can ask for a wooden facade or a green roof.

The new series is aimed at large commercial, industrial and municipal buildings as well as apartment blocks. It will use Panasonic’s Big Aquarea M air-source heat pumps, made at Panasonic’s plant in Pilsen, Czech Republic, which opened last year. EnerCube keeps responsibility for developing and building the full units, while sales will run through EnerCube, Panasonic and other partners. The companies are unveiling the deal at Expo Real in Munich, with market launch in Germany and Austria planned from 2027.

There’s a reason this setup may get attention. Replacing oil and gas heating in existing buildings is messy, especially when equipment rooms are cramped, installers are scarce and noise rules are strict. Prefabrication helps because the work can be done in series and the heating system doesn’t need to be offline for long. EnerCube says the new line can deliver up to 180 kilowatts of heat pump capacity, enough that some larger buildings that once needed two Cubes can now be covered by one, at lower investment cost than the current series.

EnerCube was founded in 2023 by Laurenz Sutterlüty and David Riedl in Köstendorf near Salzburg. It has mostly focused on apartment buildings and residential real estate, and that will stay the core business. Vonovia, Europe’s largest residential landlord, is already a major customer, with plans to buy more than 1,000 units through 2029 and a stake of about 10 percent in the company. The Salzburg Chamber of Commerce says revenue tripled in 2025 and the team grew to 18 people. Today the Cubes are built by a manufacturing partner in Aachen, Germany, and EnerCube also sells digital tools for calculating whole-neighborhood and portfolio conversions.