While there’s no denying that many historic buildings are big energy users, they can be retrofitted with more sustainable energy systems. Upgrading iconic heritage buildings in cities to support more modern requirements can too often result in a trade-off for the identity and historical value of a building. But Sharing Cities Lisbon has successfully made smart and sustainable energy systems compatible with the historical identity of the city, future-proofing the city’s cultural and historical heart for generations to come.
Câmara Municipal de Lisboa (Lisbon City municipality) is a proud participant in the Sharing Cities programme, aiming to deliver smart technology designed around citizens’ needs. Working alongside Lisboa E-Nova, EDP Portugal and Instituto Superior Técnico, the municipality has successfully introduced energy saving features in the building, optimising energy consumption while also preserving the historical and cultural characteristics of the iconic building—the heart of Lisbon.
Since work to retrofit the building first began, smart energy systems have helped curb energy usage at Lisbon’s City Hall, reducing the energy bill by about 50 percent for the local authority, representing savings of up to €8,000 a month. The good news is that these savings are expected to grow thanks to a new sustainable energy management system.
The new system will ensure optimal management of energy throughout the building by providing a full integration of energy consumption and production, helping to encourage more sustainable behaviour among council staff.
In addition to City Hall, Lisbon municipality is also implementing retrofit models on a school, a public housing block and three private residential buildings.
By introducing energy savings features in buildings, the Sharing Cities programme is building a case for cities across the globe to retrofit more iconic and heritage buildings, and ultimately help more local authorities minimise contributions of the built environment to climate change and global warming. Lisbon’s highly effective and successful upgrade demonstrates that it is possible to intervene effectively on the energy performance of old historic buildings.
Retrofitting buildings with sustainable energy measures is one of 10 measures that Sharing Cities’ demonstration cities are implementing in areas across Milan, Lisbon and Greenwich.
This project has received funding from the European Union's Horizon 2020 research and innovation programme under Grant Agreement N°691895
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