Apleona Acquires Smart Energy Group

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23 September 2025

The Apleona Group has acquired the Cologne-based Smart Energy Group from EOS-Partners.

The acquisition means Apleona adds electrical engineering and HVAC to its range of services, making it a full-service provider for all technical building services in Germany. 260 technicians working across six sites in North Rhine-Westphalia and Hesse will move over to Apelona.

The Smart Energy Group (SEG) has four operating units: Oertel & Prümm (electrical engineering), Lentzen Gebäudetechnik, Matthias Frischke (HVAC) and GPC technologies (planning services for building technology services).

This is Apleona’s second major acquisition in the building technology sector in the last 18 months, after acquiring the Diehl Group in 2024.

Apleona CEO Dr Jochen Keysberg said, “Optimising building operations – using AI-controlled HVAC systems, for example – and fitting energy-efficient technology are key tools at our disposal for cutting power consumption in existing buildings and achieving significant reductions in carbon emissions. That’s why we’ve established building technology as a crucial area for the future as part of our strategy. Even partial modernisation of building technology delivers an exceptional return on climate investment. We want to position ourselves as well as possible in this area, enabling us to play an active role in shaping the energy transition in European and German existing buildings as a decarbonisation partner.”

Speaking on behalf of SEG, Managing Director Jürgen Oberdörster added, “With the exceptional performance and diversity of its technical focus, Apleona Wolfferts was already one of our established partners, which made it ideal for working together to secure a market-leading position in complex major technical building services projects in Germany and continuing on the best possible growth trajectory. We are thrilled to have found in Apleona Wolfferts the perfect partner and shareholder for building a shared future in our burgeoning segment of cutting-edge building technology.”

Picture: a photograph showing a person wearing an Oertel & Prümm-branded jacket, holding a red voltage tester. Image Credit: Apleona

Article written by Ella Tansley | Published 23 September 2025

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