Abstract
Public lighting is an essential service in today’s cities, towns, and highways, including improving public safety and reducing traffic accidents. Public lighting could consume up to 40% of the energy budget of the local governments. Therefore, the technical innovations related to public lighting always bring significant value to municipal governments. In Vietnam, the public lighting in big cities account for 25% of the total power consumption. The solutions to reducing electricity consumption for public lighting are also of interest to domestic and foreign organizations, including the use of on-site energy such as wind and solar energy. In this paper, on the basis of the current state of the public lighting system and the potential of solar energy in Hanoi, the authors have roughly calculated the technical and economic efficiency of power supply solutions using solar energy in public lighting. The proposal of solving the power supply problem, by using solar energy in public lighting in Hanoi is another result of the paper.
Highlights
Public lighting is one of the most important items in the public sector
Vietnam has adopted a number of solutions to reduce electricity consumption in the local public lighting system [9]
It can be seen that each solar power supply model has its own advantages and disadvantages
Summary
Public lighting is one of the most important items in the public sector. Public lighting has many benefits, such as promoting economic growth, improving safety through reducing rates of crime and traffic accidents, and enhancing the city aesthetics. Lighting quality improved after the project Vietnam Energy Efficiency Public Lighting was started in 2011, but it has not met the requirements and criteria in terms of quantity and quality of lighting, low lighting efficiency, and high power consumption [8, 9] In such a context, Vietnam has adopted a number of solutions to reduce electricity consumption in the local public lighting system [9]. In addition to the mentioned solutions, the use of renewable energy sources to power public lighting systems, especially solar energy, has been applied by many countries around the world [13,14,15].
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