In a two player version of Power Grid we normally get to a point in the game where 2-3 of the Active Auctions have little to no value to add to our grid. Either they power too few cities than what I currently power or cost more resources to power the same number of cities. This creates an issue where only 1 power plant in the active auctions has the possibility of helping a player but if no one buys it then we will never get a new plant in the auction. Sometimes even that 4th plant is not in the long term plan of either player so the auctions get stuck.
Our normal way of handling this is to agree on a certain number of plants to discard from the game (2 or 3), yanking them from the bottom of the active auctions, then pulling the next 2-3 cards off the top of the draw deck and place them in their proper order int he auction. Usually this will push 2 possibly helpful plants into the active auction and get the purchasing part of the game going again. Do other players do this or have run into this issue with a stalled auction especially in Step 2? Is it possible to buy a power plant you do not want and immediately discard it as your extra plant? What other ways could we handle this situation?