Potential of reducing energy demand for lighting in Lithuania

Alfonsas Vaskys, Kaunas University of Technology, Lithuania
Feliksas Zinevicius, Lithuanian Energy Institute, Lithuania
Mikael Grimmig, Danish Technological Institute, Denmark

Keywords

Lighting installations, energy conservation potential, electricity tariffs, residential, industrial and street lighting, efficient lighting

Abstract

This paper describes the potential of reducing energy demand for lightning in Lithuania using experience of a group of researches from Kaunas University of Technology, Lithuanian Energy Institute and Danish Technological Institute.

Lithuania has been in transition to a free market economy since the first days of regained Independence in 1990, economy has undergone essential changes in all its sectors, including energy. This paper provides an overview of Energy Saving Policy, key findings from industry and residential sectors, conclusions and recommendations of substantial electricity savings for the country.

An analysis of illumination efficiency installed lamps in Lithuania shows, that an average light efficiency of the lamps installed is 37.2 lm/W - less than average of world.

The main ways for improvement of illumination efficiency are the replacement of incandescent lamps by compact fluorescent lamps (CLF) in residential and industrial lighting, replacement of high-pressure mercury lamps by high-pressure sodium lamps in street lighting installations. The advantage of replacement of incandescent lamps by CLF in residential lighting is examined in detail and the program for this replacement is prepared. The replacement of 3 mln. psc of lamps in residential lighting enables to get 432 GWh electric energy economy, which results in reduction of environment pollution: SO2 - 432 tons and NO2 - 272 tons per year.

The high-pressure mercury lamps replacement by high-pressure sodium lamps in street lighting installation is also effective. Feasibility studies are finished for Kaunas (one of the largest city of Lithuania) and Utena.