The 6,000 m² office building of Porsche Finance GmbH, built in 1987, was previously heated by an inefficient night storage heating system. High energy costs and the increasing demand for sustainable solutions made modernisation essential in order to reduce energy consumption and improve the environmental footprint.

The outdated night storage heating system caused high energy costs, as stones are heated electrically during the night to heat water. This results in a ratio of 1 to 1, where 1 kW of electricity generates 1 kW of heat. To reduce electricity costs and energy requirements through a sustainable heating solution, particular emphasis was placed on environmentally friendly and future-proof technology that increases comfort and enables long-term savings.

The cascading of eight Panasonic Aquarea BIG M 30 kW heat pumps enabled an efficient heat supply and dynamic adaptation to the heat demand. The precise control system ensured optimum performance even at peak load times. The high potential savings in electricity and operating costs were convincing: the use of natural refrigerants and inverter technology was economically and ecologically convincing. Annual savings of €100,000 can be realised, making the building more attractive.
 
 Porsche Finance GmbH modernised the heating technology in its 6,000 m² office building, which was previously heated with inefficient night storage heaters. The building, which was constructed in 1987, was fitted with a pioneering heat pump solution that not only reduces energy consumption and operating costs, but also contributes to the company's sustainability strategy.

The cascading of eight Panasonic Aquarea BIG M WXG30 heat pumps, each with an output of 30 kW (240 kW in total), enables a powerful and efficient heat supply. Precise control ensures even load distribution and dynamic adjustment to the heat demand, maximising energy efficiency and reducing operating costs. A 3,400 litre buffer storage tank was also installed.

As an interim solution, the existing night storage heating system will remain in place as an emergency backup until the heat pumps have been successfully operated for a full winter. The installation of the new system required around 600 working hours and was completed within four weeks.

The Panasonic Aquarea T-CAP BIG M 30 system exceeded the customer's expectations thanks to its high efficiency and cost-effectiveness. The use of natural refrigerants and state-of-the-art inverter technology not only ensures a sustainable heating solution, but also enables annual savings of €100,000, making the building more attractive and easier to let.

Decarbonising the building sector is a key lever for achieving the climate targets of the future. Panasonic Green Impact is pursuing this goal by developing innovative technologies and converting existing infrastructures to sustainable solutions. The latest project to modernise an office building shows how Panasonic is actively contributing to reducing energy consumption and CO₂ emissions.

Replacing outdated heating systems not only improves energy efficiency, but also makes an important contribution to reducing dependence on fossil fuels. Such projects demonstrate how state-of-the-art heat pump technology can be combined with economic benefits: In addition to saving energy costs, the CO₂ footprint of the building is drastically reduced.

The realisation of this project underlines the philosophy of Panasonic Green Impact: sustainability does not begin with the development of new technologies, but above all with their intelligent integration into existing systems. The scalability of such solutions will enable more and more buildings to benefit from more efficient heating methods in the future, making a tangible contribution to climate neutrality.

Porsche Finance GmbH
 Installer: Saturn Kälte + Klima + Wärmepumpen GmbH

240 kW