Power Grid is the updated release of the Friedemann Friese crayon game Funkenschlag. The latest cooperative publishing effort from Friedemann Friese and Rio Grande Games, removes the crayon aspect from network building in the original edition while retaining the fluctuating commodities market like McMulti and an auction round intensity reminiscent of The Princes of Florence.
However, as plants are purchased, newer more efficient plants become available, so by merely purchasing you're potentially allowing others access to superior equipment.
Additionally, players must acquire the raw materials (coal, oil, garbage and uranium) needed to power said plants (except for the 'renewable' windfarm/ solar plants which require no fuel), making it a constant struggle to upgrade your plants for maximum efficiency while still retaining enough wealth to quickly expand your network to get the cheapest routes.