Electrical Engine

Electrical Engine
Electrical Engine

Name Electrical Engine
Source Mod Forestry
ID Name
Type Engine
Stackable Yes (64)
Blast Resistance 7.5
Hardness 1.5
Solid Yes
Transparent No
Affected by Gravity No
Emits Light No
Flammable No
Required Tool Wooden Pickaxe

The Electrical Engine is an engine from Forestry, used to convert EU (from IndustrialCraft2) to MJ (from BuildCraft).

By default, the Electrical Engine requires 6 EU/t to produce 2MJ/t, but these values can be modified to an extent. It can be connected to any voltage without exploding, and will not waste EU if supplied with more than it needs. For example, when connected to an MFSU it will only take 6 EU/t to produce 2 MJ/t, not the full 2048 EU/t available.

To operate, the Electrical Engine requires a Redstone signal, such as an adjacent lever or Redstone torch, as well as sufficient IndustrialCraft energy.

The Electrical Engine will automatically shut down when overheating rather than explode, and reactivates itself after cooldown.


GUI Crafting Table.png
Tin Ingot (Forestry)
Tin Ingot (Forestry)
Tin Ingot (Forestry)


Tin Gear (Forestry)
Tin Gear (Forestry)
Electrical Engine


The Electrical Engine can be upgraded with Copper, Bronze, Tin and Iron Electron Tubes placed on a Circuit Board with a Soldering Iron. If you break an Electrical Engine with a Circuit Board in it, the Circuit Board will be lost. In the GUI of the Electrical Engine you need to take your Soldering Iron and click the upgrade to take it out. The upgrade will then be placed in an empty slot of your inventory and you can place your Soldering Iron back in your inventory.

The effects of these tubes are:

Type of tube Effect (Max per board) Quantity Change in input EU Change in output MJ EU:MJ ratio
Without Tube upgrade 6:2 = 3:1
Iron Electron Tube Efficiency (1) 1 -1 EU/t No change 5:2 = 2.5:1 (Best)
Tin Electron Tube Boost I (2) 1 +7 EU/t +2 MJ/t 13:4 = 3.25:1
2 +14 EU/t +4 MJ/t 20:6 = 3.33:1
Bronze Electron Tube Boost II (2) 1 +15 EU/t +4 MJ/t 21:6 = 3.50:1
2 +30 EU/t +8 MJ/t 36:10 = 3.60:1
Tin + Bronze Boost I (2) +
Boost II (2)
1 tin +
1 bronze
+22 EU/t +6 MJ/t 28:8 = 3.50:1
2 tin +
1 bronze
+29 EU/t +8 MJ/t 35:10 = 3.50:1
1 tin +
2 bronze
+37 EU/t +10 MJ/t 43:12 = 3.58:1
2 tin +
2 bronze
+44 EU/t +12 MJ/t 50:14 = 3.57:1
Copper Electron Tube Choke (1) 1 -2 EU/t -1 MJ/t 4:1 (Worst)

Note that the ratio listed is assuming you only use one tube (two tubes in parentheses). Depending on the type of circuit board used, up to 4 tubes may be combined to modify the power consumption and generation values in different ways, but the "max per board" limit for each type of tube must be observed.