idk why but i am really stressed right now <| sep |> If they ever want a real infrastructure with a constant and reliable source of energy , they eventually need to implement a power plant of some sort , or a dam . Large towns with a power grid rely on a constant source of power , since our current battery technology isn ' t advanced enough to store large amounts of energy . Wind turbines and solar panels are great , until the sun goes down or the wind slows down . You need a source of instant power that can be turned up or down to compensate for the amount of energy needed to supply the grid . Unfortunately , the most cost effective is usually a non renewable source . In arid regions , dams are usually not an option . In these poor countries , investing in nuclear energy is also out of the question . It almost always comes back to coal energy . You want cut down pollution ? Come up with a renewable INSTANT source of energy .