Geothermal Generator

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Geothermal Generator
Geothermal Generator ig.png
Grid layout None (small).pngGrid Geothermal Generator.png
Type Generator

Tool Grid Wrench.png
Stackable Yes (64)

A Geothermal Generator works on the same basic principle as normal Generators do.

Geothermal generators use the heat of Lava to generate electricity. With the release of IC², the generators accept both Lava Buckets and Lava Cells. The latter are stackable and thus require less maintenance, but cost Tin to produce.

Piping note: A Geothermal Generator can be supplied lava from ANY form of liquid piping, with the changes to the Forge Liqiuid Dictionary. That's right, not only Buildcraft Golden Waterproof piping, but also Redpower Hematic Tubes and Thermal Expansion Liquiducts!

A Geothermal Generator may be broken with a Stone Pickaxe or better to yield a Generator, but a Wrench is required to properly dismantle it to yield a Geothermal Generator (most of the time). Either way you remove it, it will still lose all its internal storage of EU and lava. (Not lava cells/lava buckets!)





Refined Iron






Refined Iron

Geothermal Generator


As with all Generators, the lava-based fuel of choice is inserted into the lower slot, and optionally an RE Battery in the upper slot. The Geothermal Generator will charge the battery or output power at a rate of 20 EU/t.

A single Geothermal Generator can store 24 units of lava internally and another stack of 64 lava cells will wait in the fuel queue until needed or removed by player - thus, inserting a full stack of Lava Cells will instantly use up 24 of them and fill out the lava gauge. Unlike the furnace, the Geothermal Generator does not consume the bucket when a lava bucket is used as fuel. It is returned to your inventory.

RE Battery

Lava Bucket

RE Battery

Lava Cell


Input Lava
Output 32 EU-p (20 EU/t)
Storage 480 000 (internal)


Internal Storage: 480,000 EU

Fuel Queue Storage: 1,280,000 EU

Total Storage: 1,760,00 EU

Input: Lava Buckets, Lava Cells, or placed next to a Pump

Output: 20,000 EU per Lava Bucket or Lava Cell at a rate of 20 EU/t

Additional Usages


Using the Geothermal Generator with a connection to a Pump will provide an output of 30,000 EU instead of 20,000. For it to work properly, the Pump has to be above a lava source tile, and the Geothermal Generator needs to be touching the Pump.

Additionally, an Empty Cell needs to be placed into the top of the pump (for unknown reason), and the initial powering of the pump can be done by placing 1 Redstone in the bottom slot of the Pump.

Note: Though it gives an increased EU (30,000), there is still a 200 EU per operation cost for the pump. The Geothermal Generator will charge the adjacent pump, for a total output of 29,800 EU per lava source tile.

Interactions with other mods

  • With the Powerconverters-Mod, steam engines can burn lava buckets and transfer the power through an engine generator. The engine generators are expensive, and buckets of lava are complicated to deal with, but it would produce 50,000 EU per lava bucket as opposed to 20,000 EU.
  • If you have the BuildCraft mod installed, you can generate near infinite amounts of power. Simply connect one (or more) of these magical machines to a BuildCraft Pump pumping from a lava lake in the Nether.
  • If you have RedPower installed, you can also use the slightly more expensive but more powerful and less laggier RedPower Pump!


If you have Eloraam's RedPower installed, lava can also be pumped from a RedPower volcano** into the generator.

Not responsible for limitations due to laws of physics. Not quite as "infinite" as the Nether.

Video Tutorial


Ge-o-ther-mal, doesn't that sound really good? Yeah, it does. And why? Because it's freakin awesome!

A Geothermal Generator works on the same basic principle as normal Generators do. But instead of wastefully burning stuff, these machines use the heat of pure Magma to provide a clean, yet powerful energy source. Just put a bucket of freshly gathered lava in, and watch your RE Batteries charge up! HAYO!

Attention: We take no responsibility for any physical damage customers may take in the process of filling Geothermal Generators with lava. That was specified in the waiver of liability you signed during your purchase.

You may not sue us for payment of ANY fire damage done to your housing, due to said stipulation in said waiver of liability.


Version Changes
Industrial Craft²
0.90 Geothermal Generators are re-released.
1.337 The output of a Geothermal Generator was buffed from 10 EU/t (in 10 EU-p) to 20 EU/t (in 20 EU-p).
Industrial Craft² (Upcoming)
Build #189 Geothermal Generators will output 32 EU-packets by default, however their default EU output is still 20 EU/t.

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