How is Energy Supplied?
Since the mid 20th century, there has been significant growth across all energy sources in response to demand, with oil and other non-renewable resources (natural gas and coal) dominating the energy portfolio. In terms of geographic contribution, the OECD countries, which represent the world’s most developed economies, have traditionally generated the bulk of world demand and have also provided the largest contribution of supply. By 2005, however, supply of coal, oil, and natural gas was increasingly provided by non-OECD countries such as China and regions such as the Middle East and Africa.
Total Worldwide Energy Production by Region/Group (1973 and 2005)
Total Worldwide Energy Production By Region/Group (1973 and 2005)
|
1973 (6,223 Million Tonnes Oil Equivalent) |
2005 (11,468 Million Tonnes Oil Equivalent) |
| OECD |
39% |
33% |
| Africa |
8% |
9% |
| Latin America |
6% |
6% |
| Middle East |
18% |
13% |
| FSU/Non-OECD |
17% |
14% |
| Developing Asia |
13% |
25% |
Beyond regional differences in procuring energy, many other factors contribute to its supply, such as geopolitics and technological developments.