Integration into direct real estate investments
Real estate is responsible for around 33% of all CO2 emissions and around 40% of energy consumption worldwide. PUBLICA’s Swiss real estate portfolio is made up of high-quality, mostly recently built properties (three-quarters were constructed after 2000). For direct real estate investments in Switzerland, PUBLICA implements an integrated sustainability strategy. It aims to improve the quality of the portfolio/property in terms of its risk/return profile and ensure optimum economic viability; and, as part of risk management, to apply a forward-looking and holistic view of a property that takes account of economics, ecology and society. The focus is on the economic and environmental sustainability of projects and existing real estate investments. Where economically viable and technically feasible, measures are taken to reduce CO2 emissions by using energy-efficient heating systems, insulating the building shell or installing alternative energy supply systems. Other aspects, such as power-efficient lighting systems, the use of native flora and raising tenants’ awareness of natural resource conservation, are also taken into account.
Residential development on Neunbrunnenstrasse in Zurich
In 2018, PUBLICA installed a photovoltaic system on the flat roofs of a residential development on Neunbrunnenstrasse in Zurich. The installation came on stream in early 2019 and supplies power to 113 apartments.
A photovoltaic system uses solar cells to convert sunlight directly into electrical energy. Solar thermal collectors, by contrast, are normally used to heat water.
The self-produced electricity is intended to meet part of the energy requirements of the rented apartments and communal areas. The city of Zurich electricity company ewz installed the equipment necessary to individually measure the electricity consumed.
The advantages of a photovoltaic system include:
- ability to generate own electricity from a renewable energy source
- lower electricity consumption from the grid
- a degree of independence from the energy supplier
- partial protection against rising electricity prices over the long term
190'000 kWh/year / 198 kW
The system produces around 190,000 kWh of solar power annually: enough to meet the electricity needs of more than 55 households and allow an electric car to travel round the world 24 times a year, covering almost a million kilometres.
Example: La Maladière, Neuchâtel
City of Neuchâtel (stadium),
Zürcher Kantonalbank & PUBLICA (commercial usage)
District heating, solar panels, etc.
Year of construction (panels)
2007 and 2013
No. / surface area of panels
3,064 / 3,636 m2
Production / max. output
460,000 kWh/year / 470 kW