Generates electricity from light sources.
Solar panels provide โก๏ธ Electricity, which is stored in ๐ Batteries.
โก๏ธ Electricity is not as important as ๐ฉ Metal or ๐ Crystal but it is very necessary for researching and later in game.
It is the only common resource that cannot be transferred nor recovered (from deconstructing/demolishing) which makes having good calculations very important and a problem if you run out, specially when chaining Hyperspeed jobs. It is also consumed, in small quantities, by engaged defensive buildings and other auto-renewed jobs (Automatic Scans). On the other hand, ๐ Solar Panels are the fastest resource generator building.
See Resources for a summary on how each resource works.