Configurable settings for robots.
Here's the options and their defaults, accessible via Settings > Mod Settings > Startup

Default settings to change:

Construction robot energy per move: 5kJ
Construction robot energy per tick: 0.05kJ
Construction robot speed multiplier: 1
Logistic robot energy per move: 5kJ
Logistic robot energy per tick: 0.05kJ
Logistic robot speed multiplier: 1