SINFONIA Site Bolzano

Country & City

  • Italy
  • Bolzano


Contact Information

Since 2005, Bolzano (Italy, 100,000 inhabitants) has developed an ambitious investment plan for large scale urban refurbishment in collaboration with both public and private stakeholders. The work undertaken in SINFONIA is part of this plan, and aims to achieve 40% to 50% primary energy savings in the demo sites and to increase the share of renewables in the district of Bolzano SW (South West) by 20%.

Over the next three years, the City of Bolzano and the Institute for social housing (IPES) will renovate 12 buildings in the Don Bosco and Oltrisarco-Aslago districts. A total of 422 social housing apartments from the 1950s-1990s covering a surface area of approximately 37,000 m² will be renovated to consume less energy and improve the comfort of their tenants, but also to enhance the neighbourhoods where they are located. The goal is to reduce the demand for primary energy by 40% – 50% and increase the use of heat and electricity produced from renewable sources by 20%. The project works include renovation of the building’s envelope, installation of power plants running on renewable energy sources to supply the building’s demand, new windows and doors and a mechanically controlled ventilation system.

Building refurbishment

37,000m² of social housing from the 50s-70s will be retrofitted to achieve high energy performance and improve interior comfort while ensuring cost effectiveness and minimal impact on tenants. Measures include:

  • building envelope insulation
  • integration of renewable energy sources for electricity, heating and domestic hot water Solar PV panels 
  • additional storeys using innovative timber construction technologies.

District heating and cooling

The district heating and cooling network will be extended and optimised to reduce both the CO2 and the nitrogen equivalent emissions. Measures include:

  • real time monitoring and forecasting of peak loads and energy demand
  • hybrid hydrogen/methane backup system
  • study on recovery of wasted energy from local industrial park.

Electricity grid

Bolzano will implement an Urban Service-Oriented Sensible Grid (USOS-grid) system in the South West district for improved energy distribution control. Measures include:

  • recharge points for vehicles and bicycles
  • meteorological stations for local climate condition monitoring
  • smart retrofitting of the public lighting system.