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Table 2: Physical and cost factors contributing to risk exposure by technology

Source: IEA, Power Generation Investment in Electricity Markets, Nov. 2003, p.32

Technology Unit size Lead time Capital cost/kW Operating cost Fuel cost Regulatory risk
Hydro power v.large long v. high v. low nil high
Wind small short high v. low nil medium
Nuclear v.large long high medium low high
Coal (PC) large long high medium medium high
Gas (CC) medium short low low high low