Document Type : Research Article

Authors

Department of Renewable Energies and Environmental Department, University of Tehran P. O. Box: 1439957131, Tehran, Iran.

10.30501/jree.2022.330754.1338

Abstract

Industries as one of the main consumers of electricity have high position in releasing large amount of emissions. Using renewable energies to feed factories is not an easy task and they should be economically viable to compete with fossil fuels. The goal of this study is to analyze the possibilities of using energy local area networks in off-grid and on-grid modes in an industrial project by considering and calculating all primary and deferrable loads in details for the first time. The industrial project is sensitive and all possibilities should be considered closely to avoid economic losses. In this case, changes in electrical loads during the project, degradation of components, environmental risks and economic risks of the investment (for each scenario) are considered and determined too. The results of the research indicate that components degradation can cause 24,000 kWh drop in total electricity production at the end of the project and the total biogas consumption increases from 742 kg/yr to 9330 kg/yr. The results also show that the on-gird scenario (solar/battery) with the Net Present Cost of 200,000$ will be an easy and low risk choice for investment but has high environmental risks. On the other hand, the stand-alone scenario (solar/wind /bio/battery) with Net Present Cost of 598,000$ minimize the environmental risks at the expense of high risk of investment. Comparing multi-year mode with the single-year mode at the end of the project, makes the increased accuracy of the techno-economic analysis in terms of optimum system types, emissions and economics clear.

Keywords

Main Subjects

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