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Description
This project proposal envisages the rehabilitation and modernization of the external artificial lighting system in the town of Sandanski by implementing selected measures to improve its energy efficiency. We anticipate the implementation of the following major energy-saving measures: → ECM 1 "Replacing Existing Street Lighting with New Energy Efficient LED Lighting" → ESM 2 “Introduction of a system of centralized intelligent street lighting management” - allowing planning, monitoring, control of electricity costs for street lighting → ESM 3 “Generation of energy from RES for self-consumption from street lighting in Sandanski” - providing electricity for more than 10% of the total energy consumption for street lighting in Sandanski. This project proposal aims to implement appropriate energy saving measures through technological upgrading and modernization of the external artificial lighting systems owned by the Municipality of Sandanski, which will improve the living conditions of the local population and the numerous tourists and visitors. The implementation of the set of measures will achieve the following specific objectives: → Reducing CO2 emissions as a result of reduced electricity consumption; → Reducing the cost of electricity for street lighting; → Improvement of the quality of street and park lighting in accordance with BDS EN13201 / 2016; → Reduction of light pollution caused by street lighting. Direct pollution from street lights is zero because they only emit in the lower hemisphere; → Reduction of the relative consumption of electricity for street lighting per 1 inhabitant (kWh / inhabitant); → Reduction of annual maintenance costs and consumables Overal goal: Total annual savings ∆Еyear.LED as a result of the replacement of existing luminaires with new LED street luminaires is 76% of the total savings.
Summary of project results
The existing street lighting system of the city of Sandanski is morally outdated, depreciated and energy-intensive. The street lighting system in the city is mainly implemented by old high-pressure sodium lamps (HPS) with a power of 70W, 100W and 150W. The long-term operation of the majority of lighting fixtures has led to their depreciation - pollution, corrosion of their luminaires and reflectors, as a result of which the main part of the light (about 60%) is lost. Because of this, a large part of the lighting fixtures have functioned with impaired light output parameters and, accordingly, with low efficiency. In this regard, the purpose of the project is to modernize the existing lighting system and bring it into line with the lighting requirements.
Old high-pressure sodium lamps have been replaced with new energy-efficient LED lighting fixtures. A system for centralized intelligent management of street lighting has also been introduced, allowing for planning, monitoring and cost control. An autonomous photovoltaic (solar) system has also been built, consisting of two independent photovoltaic power plants installed on the roof of a public building in the city of Sandanski, which power part of the city''s street lighting system. Each of the photovoltaic power plants has a capacity of 7.5 kWp and has its own battery block with a capacity of 9.6 kWh for storing the produced electricity. The total capacity of the constructed photovoltaic system for the production of electrical energy is 15 kWp, and for its accumulation and release during the dark hours of the day 19.2 KWh.
Old high-pressure sodium lamps have been replaced with new energy-efficient LED lighting fixtures. A system for centralized intelligent management of street lighting has also been introduced, allowing for planning, monitoring and cost control. An autonomous photovoltaic (solar) system has also been built, consisting of two independent photovoltaic power plants installed on the roof of a public building in the city of Sandanski, which power part of the city''s street lighting system. Each of the photovoltaic power plants has a capacity of 7.5 kWp and has its own battery block with a capacity of 9.6 kWh for storing the produced electricity. The total capacity of the constructed photovoltaic system for the production of electrical energy is 15 kWp, and for its accumulation and release during the dark hours of the day 19.2 KWh.