GOOD PRACTICE EXAMPLE

Country:	Germany
Product group:	Office lighting Street lighting
Name of the institution:	Free and Hanseatic City of Hamburg

Overview

CO₂-reduction: 16,800 tons/year
Cost-savings: 3,66 Mio. €/year

The Free and Hanseatic City of Hamburg has set a strong focus on energy efficiency in lighting in particular. With the comprehensive campaign “2:1 Leuchtentausch” (luminaire exchange – 2.1 for the climate) Hamburg has achieved a CO2 reduction of 16,800 tons per year.

Hamburg is one of the steadily growing metropolises of Germany. The department for Urban Development and Environment as the main authority in infrastructure is responsible for Hamburg’s attractiveness and functionality. To be more specific its wide range of tasks include landscaping and city planning, building and living, transportation, energy as well as nature conservation and environmental protection.Because of the various actions of climate protection taken place in public buildings, Hamburg was awarded the first prize in the category of the competiton called “Energiesparkommune” (energy saving community) by the Deutsche Umwelthilfe in 2005.

Institutional details

Procurement process

The department for Urban Development and Environment identifies all huge administration offices, which had the same technology for lighting. Thereon constructive, the department standardised and focused the reconstruction for all offices. On this basis a pan-European call for tender for material engineers and installation services was possible and beneficial conditions could be achieved.

Measures

Between 1994 and 2005 more than 200,000 luminaires in 426 public buildings were optimised in energy manner. The lamps in luminaires with two old inefficient fluorescent tubes were replaced by one modern efficient lamp with electronic ballasts. With the use of this efficient technology the luminous efficacy levels off, but the energy consumption decreases about the half. The investment costs amounted to 22 m. Euros. This project was financed by the means of the Hamburg budget as well as credit from the Hamburg electric power authority. This credit is covered by the yearly operation costs saving.

Success

With these measures the City Hamburg saves 22 m. kWh per year, which is equivalent to a saving of about 16,800 tons of CO2. Furthermore the public budget of Hamburg saves 3.66 m. Euros each year.