Energy Consumption
Action and plans
Oslo has reduced energy consumption by 70% per year as well as the emission of carbon dioxide of 1440 tonnes with the innovative and energy-efficient action on the street lights. The adjustment is made, using the system "intelligent lightening", which 10,000 high-pressure sodium lights are involved. Those streetlights are operated by a central database that monitors and administers commands. The switch cabinet receives messages from the central database existing 230V power cables. The plan has been carrying out since 2004 and the result is clearly seen after 2-3 years of implementation time and is having obvious improvements year by year. The system is currently fully equipped with all the components. The predicted energy saving has been achieved and has reach the significant financial saving as well.
Carbon Dioxide emissions
In Oslo, the electricity supply is mainly hydropower generated (98%), fossil-fuel based electricity is only imported in 5 out of 10 years and are normally an electricity exporter. Referring to the "intelligent lightening" mentioned above, the lighting is 100%, always provided by hydropower sources. Assuming the generation is done by carbon dioxide, the required power is going to use up 1400 tonnes of carbon dioxide per year. In other sense, the high efficiency of the lights mean 70% of the electricity used under the old system for street lighting is diverted for use elsewhere, potentially reduced emissions further.
Energy efficiency
It is estimated that the energy saving potential has been to the point of 4.5 GWh per year. The plans for consistent replacement of old inefficient streetlight is being carried on. By now, 15% of the streetlights in Oslo are renovated.
EU supported E-street project
This project covers energy efficiency activities, development of international standards and clustering of street light owners. It is done with the counts of 12 partners from 11 European countries. The project achieves the aim of initiating the reduce is energy usage in outdoor lighting system in the European union.