The cost of energy will go near zero. The marginal cost of an electron captured with solar is free.
Solar is starting to beat fossil fuel installations already, below $0.05 USD per kWh.
This was not predicted even by the biggest cheerleaders even 10 years ago: "In 2017, the solar industry achieved SunShot’s original 2020 cost target of $0.06 per kilowatt-hour for utility-scale photovoltaic (PV) solar power three years ahead of schedule, dropping from about $0.28 to $0.06 per kilowatt-hour (kWh)." [1]
Solar is starting to beat fossil fuel installations already, below $0.05 USD per kWh.
This was not predicted even by the biggest cheerleaders even 10 years ago: "In 2017, the solar industry achieved SunShot’s original 2020 cost target of $0.06 per kilowatt-hour for utility-scale photovoltaic (PV) solar power three years ahead of schedule, dropping from about $0.28 to $0.06 per kilowatt-hour (kWh)." [1]
Sunshot goal for 2030 is $0.03 per kWh.
[1] https://www.energy.gov/eere/solar/sunshot-2030