ENERGY-EFFICIENT STREET LIGHTING SYSTEM OF THE CITY OF SHTIP USING SOLAR ENERGY AND LED TECHNOLOGY

Abstract

Abstract
This paper deals with two currently very important energy issues, the increase of energy efficiency and
sustainable energy development. For living standards, street lighting is unavoidable conformity that, in general,
consumes a significant amount of electric power due to prolonged utilization period, and many lighting sources
with significant-rated power and modest life expectancy.
In this paper, the authors proposed the replacement of the existing street lighting system of the part of the city
of Shtip with a new, energy-efficient, and environmentally friendly, and energy sustainable system. The proposed
system utilizes renewable solar energy sources and the replacement of the existing and obsolete streetlight bulbs
with new and highly efficient light bulbs based on LED technology. The comparative analysis is given from
technological and financial viewpoints proving that this new system could easily repay investments in the period
less than two years. Although the initial investments might look too large, the operation and maintenance of the
proposed system including payment for consumed electricity justify not partial, but replacement of the entire
city street lighting system.
Keywords: renewable energy sources, solar energy, street lighting, LED bulbs