The report "Renewable Power Generation Costs in 2018" by IRENA provides an overview of the costs of renewable power generation in 2018. The report states that renewable energy costs have continued to decline, making it increasingly competitive with fossil fuels. The report also highlights that the cost of renewable energy is expected to continue to decrease in the future, making it an attractive option for countries looking to transition to a sustainable energy future. The report is available for download on IRENA's website.