Plan: Windmill

Plan: Windmill is a plan in Fallout 76.

Location
Players can find the plan by completing Powering Up Poseidon, Powering Up Monongah, and Powering Up Thunder Mountain events, where it's given as a reward. Any power plant Power Up event can yield the schematic - it's one of three options available and one of those is always is issued until the player has all three.