Back in the days when there were less maps we played every map back to back
Ooh a little higher, now a bit to the left, a little more, a little more, just a bit more. Oooh yes, that's the spot!
During our first game, some players decided not to bid on their choosing and passed on it keeping their possibility of bidding in later auctions.
If it is your turn to choose a power plant and you choose to pass then you may not participate in any further auctions that turn at all.
If someone else chooses a power plant you may pass on that power plant and participate in a future auction on that turn.