Abstract

Renewable energy can be defined as energy produced by natural resources that are naturally replenished within a time span of a few years (Lund H. Renewable energy systems. Academic, Oxford, 2014). Renewable energy typically includes hydropower (“old renewables”), wind power, solar power, biopower, geothermal power and tidal power (“new renewables”) and are among the most important contributors in the battle against global warming. In IEA projections, renewable energy accounts for 32% of the emissions cuts needed for humankind to keep global warming below 1.8 °C (IEA. World Energy Outlook. IEA Publications, Paris, 2019a).