Just a couple of loose ideas:
Gasoline powered generator, that powers a dynamo
A Dynamo that can recharge storage batteries, or act as direct power source
‘Live’ electricity can power various things that already uses batteries (like welder and such)
Placeable Lightsources that needs ‘live’ electricity (and possibly cables) to function
They can work much like fires in lightmap.cpp
Does anyone knows if the Terrain type “EmergencyLight” has any usage in teh game right now?