Minecraft is full of ways to make power generators of various shapes and sizes. Here is a comparison chart of energy in minecraft to assist in determining an ideal generator to build.
I used the following conversion chart for going between power types
| RF | Energy |
|---|---|
| 10 RF | 1 MJ |
| 4 RF | 1 EU |
| 0.25 RF | 1 J |
| 0.006 RF | 1 W |
| Mod | Name | Fuel | Tier | RF/tick |
|---|---|---|---|---|
| Mekanism | Gas-Burning Generator | Hydrogen | 1 | 800 |
| Mekanism | Wind Turbine | Mekanism | Height: 70 | 1 |
| Mekanism | Wind Turbine | Mekanism | Height: 250 | 1 |
| Mekanism | Heat Generator | Mekanism | Passive Lava | 1 |
| Mekanism | Heat Generator | Mekanism | Bucket Lava | 1 |
| Mekanism | Solar Generator | Mekanism | Sunlight | 1 |
| Mekanism | Advanced Solar Generator | Mekanism | Sunlight | 1 |
| Mekanism | Reactor | Mekanism | TBD | ? |
| Solar Flux | Solar panel IV | Solar Flux | Sunlight | 5 |
| IndustrialCraft2 | Generator | Burnables | 1 | 40 |
| IndustrialCraft2 | Solar Panel | Sunlight | 1 | 4 |
| IndustrialCraft2 | Windmill | Variable | 1 | 44 |
| IndustrialCraft2 | Watermill | Water | 1 | 8 |
| IndustrialCraft2 | Geothermal Generator | Lava | 1 | 80 |
| IndustrialCraft2 | Nuclear Reactor | TBD | ? | ? |
| GregTech | Generator | Fuel | 1 | 32 |
| GregTech | Gas Turbine | Gas | 1 | 64 |
| GregTech | Thermal Generator | Lava | 1 | 96 |
| GregTech | Semifluid Generator | Semifluid | 1 | 32 |
| GregTech | Magic to Energy Generator | Magic | 1 | 96 |
| GregTech | Dragon Egg Siphon | Dragon Egg | 1 | 512 |
| GregTech | Fusion Reactor | TBD | ? | ? |
| GregTech | Plasma Generator | TBD | ? | ? |
| Railcraft | Steam Turbine | Steam | 1 | 800 |
| Railcraft | Hobby Steam Engine | Steam | 1 | 20 |
| Railcraft | Commercial Steam Engine | Steam | 1 | 40 |
| Railcraft | Industrial Steam Engine | Steam | 1 | 80 |
| Forestry | Peat Fired Engine | 1 | 20 | |
| Forestry | Biogas Engine | Peat | 1 | 50 |
| Forestry | Electrical Engine | Biogas | 1 | 20 |
| Forestry | Clockwork Engine | None | 1 | 15 |
| Thermal Expansion | Steam Engine | Steam | 1 | 40 |
| Thermal Expansion | Magmatic Engine | Lava | 1 | 40 |
| Dartcraft | Force Engine | Lava | 1 | 40 |
| RedPower 2 | Blulectric Engine | Bluelectric | 1 | 320 |
| RedPower 2 | Solar Panel | Sunlight | 1 | 1 |
| RedPower 2 | Thermopile | Lava | 1 | 1 |
| RedPower 2 | Kinetic Generator | Lava | 1 | 1 |
| Minefactory Reloaded | Biofuel Generator | Biofuel | 1 | 160 |