Modern steam turbine plants are not that old, and they require a lot more maintenance. Plus, Nigeria produces hardly any coal, so you'll have to either import c

Modern steam turbine plants are not that old, and they require a lot more maintenance. Plus, Nigeria produces hardly any coal, so you'll have to either import coal (requires import terminal and rail plus reliance on foreign coal) or mine more coal (open coal mine infrastructure, rail). Solar just produces electricity and doesn't need a bunch of infrastructure.