Journal
RENEWABLE ENERGY
Volume 180, Issue -, Pages 658-672Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.renene.2021.08.088
Keywords
Cost competitiveness of renewable energy; Electricity generation cost; Levelized cost of electricity; Renewable energy; Factors affecting electricity costs
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Renewable energy technologies, especially solar and wind energy technologies, have experienced a rapid decline in costs over the past two decades, making them cost-competitive with fossil fuel technologies. However, there is currently no consensus on the cost competitiveness due to wide variations in factors influencing LCOEs across countries and technologies.
Renewable energy technologies (RETs), particularly solar and wind energy technologies, have experi-enced a rapid decline in their costs over the last two decades. Several studies claim that RETs are cost-competitive with fossil fuel technologies based on their levelized costs of electricity (LCOE), the most common indicator used to compare the cost competitiveness of electricity-generating technologies. However, no consensus exists due to the wide variations in factors influencing the LCOEs across countries and technologies. This study calculates more than 4000 LCOEs for 11 technologies, varying all input variables. It shows that the LCOEs for RETs, except concentrated solar and offshore wind, are lower than those for fossil fuel technologies at the lower range of capital costs and discount rates of 10% or lower. However, for a reasonable range of input variables, the study cannot justify the low auction prices for solar power, below US$20/MWh, recently observed in some parts of the world. The study illustrates how various factors influence the cost of electricity generation across technologies. It also compares the trends in electricity generation costs between RETs and fossil fuels over the last two decades. (c) 2021 Published by Elsevier Ltd.
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