Answer:
1. They can be unreliable: they are weather dependent. Wind turbines requires wind blowing and solar panels require clean skies and sunshine to generate electricity.
2. They are expensive: setting up renewable energy generation facilities requires a lot of capital.
3. They require a lot of space: solar panels and wind turbines fields require much more space than traditional power plants to generate the same amount of electricity.
4. They have low efficiency levels: renewable technologies are new in the market and they still have low efficiencies compared to traditional power plants.
5. They still create pollution: wind turbines are noisy for people that live near them.
6. They have location limitations: for example to be be economically viable wind farms are best suited for coastal areas, the tops of hills, and open areas with strong and reliable wind.
