| Energy
Sources |
|
|
|
|
|
|
|
|
| n | Biomass –
Firewood |
||||||
| n | Draft animals |
||||||
| n | Wind/water –
mills |
||||||
| n | Solar – heat and
photovoltaic |
||||||
| n | Fossil carbon –
coal, oil, gas, tar & shale |
||||||
| n | Nuclear Energy |
||||||
| n | Fusion |
||||||