Renewable energy is already relatively cheap to produce, with new onshore wind and photovoltaic generation being cheaper than new gas or coal infrastructure. The concern is more about whether it is reliable for nights and poor weather conditions. When you have to account for battery storage along with the renewables, it becomes more expensive. There are some workarounds, such as retrofitting existing hydroelectric dams to work in conjunction with solar arrays and run the water only during peak hours.

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