Solar-powered Promethium hauler

[h.q.droid]

The description of Solar Edge mentions "self sufficient" yet almost every design requires regular fuel imports to get there, which feels wrong. So is my end-game design, a ship that travels to solar edge on solar power only and produces ~100 promethium per minute. No nuclear or fusion used at all.

A major enabling factor is the realization that, the trip to solar edge has 15.5% solar panel output on average. With legendary panels and legendary efficiency beacons it's possible to be power-positive for a good portion of the trip. Plus a really thin ship and the "night" length becomes manageable.

Besides the many batteries and solar panels, the ship also uses many productivity tricks I learned here: use basic carbon crushing and produce sulfur from gas for productivity, empty liquid iron / copper / water by switching recipe which is faster than yeeting ores / ice, crab-like railgun setup to improve range coverage.

The BP is at: https://factoriobin.com/post/hvlsr1