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World Energy Outlook 2007

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Hydropower generation reaches 6 610 TWh and other renewables reach<br />

5 170 TWh. In this scenario, 80% of the economic potential for renewables<br />

in 2030 would be used. Most of the increase in renewables-based generation<br />

comes from hydropower and biomass. Intermittent renewables would<br />

account for 10% of generation in 2030, below the maximum level of 15% to<br />

30% considered safe for the grid (Implementing Agreement on Wind <strong>Energy</strong>,<br />

2006). However, backup generating capacity would be needed at additional<br />

cost. Exceptionally rigorous new government measures, involving strong<br />

financial incentives and/or regulations, would be needed to effect such a rapid<br />

expansion of renewables-based generation.<br />

5<br />

Table 5.6: Renewables-Based Electricity Generation<br />

2030<br />

2005 450 Stabilisation Reference Alternative<br />

Case Scenario Policy Scenario<br />

TWh % TWh % TWh % TWh %<br />

Hydro 2 922 16.1 6 608 22.5 4 842 13.7 5 403 17.3<br />

Biomass 231 1.3 2 056 7.0 840 2.4 1 166 3.7<br />

Wind 111 0.6 2 464 8.4 1 287 3.6 1 800 5.8<br />

Geothermal 52 0.3 219 0.7 173 0.5 190 0.6<br />

Solar 3 0.0 406 1.4 161 0.5 352 1.1<br />

Tidal/wave 1 0.0 28 0.1 12 0.0 24 0.1<br />

Total 3 321 18.2 11 781 40.2 7 315 20.7 8 935 28.6<br />

Installed nuclear generating capacity reaches 833 GW in 2030, compared<br />

with 525 GW in the Alternative Policy Scenario and 415 GW in the<br />

Reference Scenario. Electricity generation from nuclear more than doubles,<br />

compared with 2005 levels, from 2 770 TWh to 6 560 TWh in 2030. About<br />

4 600 TWh of electricity in 2030 is still produced by coal-fired plants that<br />

are installed before 2012. An increasing proportion of new coal plants built<br />

after 2012 are assumed to be equipped with CCS. In 2030, some 1 750 TWh<br />

of electricity is generated from coal plants equipped with CCS, equivalent to<br />

capacity of about 310 GW. Gas-fired plants produce 4 370 TWh, of which<br />

13% is from plants with CCS. Oil will by then have become a marginal<br />

source of electricity, accounting for only 1% of electricity generation. CCS<br />

will have to be particularly widely deployed in the United States, China and<br />

India.<br />

Chapter 5 - Global Environmental Repercussions 213

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