Thank you for your replies. Yes, you can actually argue that the rocket does not need power to launch, but it actually drains full electric power during launch. See bug Ticket named [0.17] Rocket Silo Power Consumption https://forums.factorio.com/viewtopic.php?f=23&t=65184&p=401007&hilit...

Dear team, I have a bug to report. If you build a rocket up to 100% and enable "auto-launch with cargo." you can actually cut power, put something with an inserter into the rocket and it will immediately launch without power turned back on. The reason for that is, that I am playing the fis...