Fonds Kirchberg Unveils Sustainable Energy Initiative Across Its Buildings

On Friday 5 December 2025, Luxembourg Minister for Mobility and Public Works, Yuriko Backes, inaugurated the new photovoltaic installation on the Fonds Kirchberg builiding in Luxembourg-Weimershof, in the presence of Sylvie Siebenborn, President of Fonds Kirchberg, and Marc Widong, its Director. 

The Ministry of Mobility and Public Works and Fonds Kirchberg said the installation reflected Fonds Kirchberg’s commitment to reducing its carbon footprint and experimenting with new collective self-consumption models.

According to the ministry, since November 2025, the roof of the Fonds Kirchberg building on Rue de Grünewald in Luxembourg-Weimershof has hosted 400 photovoltaic panels (450 W each), with a total installed capacity of 175 kWp, covering an area of 800 m². The estimated annual production of 160,000 kWh will power both the brigade building and the Fonds Kirchberg administrative building on Rue Erasme in Luxembourg-Kirchberg, thanks to the creation of an internal energy-sharing group.

The system will meet 95% of the building’s daily energy needs and 65% of the administrative building’s consumption. Over a 30-year lifespan, it will avoid the emission of 767 tonnes of CO₂, equivalent to 28.8 tonnes per year. 

Minister Backes stated: “This initiative by Fonds Kirchberg perfectly demonstrates the government’s commitment to equipping public buildings with solar installations to reduce their carbon footprint.”

The project, with a total cost of €290,000 including VAT, involved collaboration with Klima-Agence, Creos, Enovos, EAL (installation), the engineering firm ENTEC and the control office SECO.

Sylvie Siebenborn explained: “This installation marks a significant milestone. It allows us to test collective self-consumption on a small scale, as a step towards a future district-wide deployment, particularly at Kuebebierg.”

Marc Widong added: “This approach enables Fonds Kirchberg to better manage its energy costs while contributing to the decarbonisation of its buildings. The project also offers valuable learning opportunities for the Fonds Kirchberg teams. With this first practical experience, Fonds Kirchberg can develop larger-scale energy-sharing groups in the future, building on the lessons learned from this pilot project.”

The initiative aligns with Luxembourg’s national energy transition strategy and supports the objectives of the National Integrated Energy and Climate Plan (PNEC) as well as the European Green Deal, which aims for a carbon-neutral Europe by 2050.

Fonds Kirchberg comprises thirteen staff who maintain the plateau’s public spaces, including roads, pavements, cycle paths, parks, playgrounds, and green areas, covering a total of 305 hectares. Their responsibilities include winter gritting of pavements and cycle paths, managing public bins owned by the Fund, trimming and mowing green spaces and providing signage during works.

The brigade operates from a building equipped with workshops (mechanical and maintenance), storage areas, social and administrative spaces and a salt reserve. This infrastructure is shared with the intervention team of the Administration of Bridges and Roads, ensuring close collaboration for the daily management of public spaces.