Fuel Shares and Portfolio of Generation Technologies

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Until 2000, the Mexican power sector relied heavily on fossil fuels, particularly oil-fired conventional sub-critical steam power plants, with generation efficiency in high twenties to low thirties. However, the IPPs have shifted the structure and fuel-share of the Mexican power sector by rapidly building natural gas fired combined cycle plants.

Geothermal

Geothermal

Total Installed Capacity (2007): 51029 GWe Total Generation (2007): 231 TWh

Note: Wind generation (248GWh) not shown here.

Fig. 11.11 Distributions of installed public sector capacity and generation in 2007

Total Installed Capacity (2007): 51029 GWe Total Generation (2007): 231 TWh

Note: Wind generation (248GWh) not shown here.

Fig. 11.11 Distributions of installed public sector capacity and generation in 2007

In 1999, before the first IPP came online, conventional oil-fired thermal plants played a key role in supplying electricity to the country. Fuel oil contributed 61% to the total fuel consumed for power generation, followed by natural gas (19%) and coal (12%), and rest nuclear and diesel [40]. Since then the share of fuel oil has continued to decline in the total fuel-mix (Fig. 11.11), and as a result there has been a significant reduction in sulfur dioxide emissions from power generation (see below). For example, units of Jorge Luque and Valle de Mexico located in the Mexico City Metropolitan Area reduced air emissions of criteria pollutants significantly [41]. In addition to being much cleaner and more efficient than fuel oil plants, the gas power plants provide reserve capacity to meet peak demand.

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