In 2017, Germany’s Freiburg opened a city hall with solar-powered walls designed to produce more energy than the building needs

In 2017, Germany’s Freiburg opened a city hall with solar-powered walls designed to produce more energy than the building needs

The newly constructed city hall in Freiburg exemplifies sustainability, generating excess energy through high-performance solar panels embedded in its roof and walls. Equipped with top-tier insulation and a heat recovery ventilation system, the facility efficiently optimises energy use. It also leverages groundwater for temperature control. Serving as a model for public sector energy initiatives, this striking structure highlights the potential …