MJ

Minecraft Joules (MJ) are the energy units of all BuildCraft Engines and Machines. This is a list for reference about the MJ production and consumption of the different Engines and Machines.

Engines

Engines	Max Energy (MJ)	Energy Generated	Max Input (MJ)	Max Output (MJ)	Piston Speed/Ticks to Extract
					Blue	Green	Yellow	Red
Redstone	1000	1 MJ/s	50	1	0.01	0.02	0.04	0.08
					102	52	26	14
File:Grid Steam Engine.png Steam	10000	1 MJ/t	200	100	0.02	0.04	0.08	0.16
					52	26	14	8
File:Grid Combustion Engine.png Combustion	100000	1,2, or 5 MJ/t (lava, oil, and fuel respectively)	2000	500	0.04	0.05	0.06	0.07
					26	24	18	16

Conductive Pipes

Conductive Pipes	Max Input (MJ)	Max Energy Stored (MJ)	Latency (ticks)	Power Loss (per pipe) (MJ)
Wooden	1000	1000	50	0.01
Stone	1000 from each connected pipe	N/A	N/A	0.01
Cobblestone	1000 from each connected pipe	N/A	N/A	0.01
Gold	1000 from each connected pipe	N/A	N/A	0.001

Data for pipe capacity is currently incomplete.

Machines

Machine	Internal Energy Storage (MJ)	Min Input (MJ/t)	Max Input (MJ/t)	Min Activation Energy (MJ)	Min Time between Actions	Energy per Action (MJ)
File:Grid Pump (BC).png Pump	100	1	1	10	20	10
File:Grid Builder.png Builder	25	2.5	2.5	25	10	25
File:Grid Filler.png Filler	100	2.5	10	25	10	25
File:Grid Mining Well.png Mining Well	1000	2.5	2.5	25	50	25
File:Grid Oil Refinery.png Refinery	1000	2.5	2.5	25	1	10
Quarry (Build Phase)	7000	2.5	2.5	25	20	25
Quarry (Dig Phase)	7000	3	20	50	1	2-9

Filler

The filler has a 40% chance of not placing a block but still using the energy it would have.

Quarry

The quarry's mechanical arm moves at a speed dependent on how much energy it is able to draw from the internal storage. The exact formula for calculating movement speed is 0.015 + Energy Per Action / 200, meaning it will move at a minimum of 0.015 meters per tick, to a max of 0.015 + 9/200 = 0.06 meters per tick. In comparison, this is approximately the same speed as sneaking.

While digging, the quarry tries to perform an action every tick, which is why the energy per action is lower than other machines.