Board Thread:Questions and Answers/@comment-72.240.252.204-20140122225016/@comment-23270394-20140123123834

The engine will use up to 32 kW if available, which will produce 32 MJ/t, which will require a ton of panels. However, blulectric engines will automatically detect the power requirements of a machine they are directly connected to, and will limit their power requirement, though this will not work with condictive pipes. Connecting the engine directly to the machine will prevent energy waste.

Edit: Wait, you are powering autocrafting tables?