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Economic and Ecological Efficiency of Solar Systems. A Case Study at the Gorzków and Rudnik Communes
Piotr Gradziuk
Barbara Gradziuk
Abstract
The objective of the study was to assess the economic and ecological efficiency of solar systems used to prepare domestic hot water. The study was carried out at 501 sites in the communes of Gorzków and Rudnik (Krasnystaw County, Lubelskie Voivodship), mainly households, in the years 2014–2015. The results indicate that solar collectors used to prepare domestic hot water and financed by the investors’ own resources can be economically efficient, but the payback period for the investment depends on the type and quantity of energy carrier saved. The most beneficial effects were obtained at sites where water was heated using equipment powered by electricity and natural gas. In the case of coal savings, the payback period was longer than the lifespan of the solar installations. The use of solar collectors to heat domestic hot water (DHW) in the Gorzków and Rudnik communes led to a reduction in emissions of CO2, the primary greenhouse gas, as well as other substances. The study shows that the most beneficial cost-effectiveness of CO2 emission reduction was obtained by reducing the use of electricity, while the highest cost-effectiveness indicator was noted for gas installations.
Keywords:
economic efficiency, solar installation, renewable energy sourcesMost read articles by the same author(s)
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