Power Drip is a simple passive generator program which passively generates +1 PWR per turn, starting from the second turn of the mission. Power Drip can be chosen as a starting program, but cannot be acquired otherwise.
Since Power Drip works passively and has no side-effects, you can just ignore it while it generates PWR in the background, and only be aware of it when you need to plan for how much PWR you will have on a future turn.
Power Drip is the first generator program you are likely to play with, as the other starting programs must be unlocked before they can be chosen. Power Drip is beginner-friendly and can be used in many different playing styles. However, it generates less PWR per turn than most other generators do on average.