Fact sheets: Comparative energy costs and fossil generation failure in the 2017 heatwaves

by Mark Ogge

NEM Fossil generation failure in the 2017 heatwaves

During the February 2017 heatwave across south eastern Australia, 14% of fossil generating capacity (3,600 MW) failed during critical peak demand periods in South Australia, New South Wales and Queensland as a result of faults, largely related to the heat.

Comparative energy technology costs

  • Electricity from new wind and solar plants is now cheaper than from existing gas plants.
  • Electricity from wind is cheaper than coal or gas, even with additional “firming” costs that ensure its availability 24/7.
  • Solar thermal is cheaper than gas peaking plants for flexible dispatchable generation.

NEM Fossil generation failure in the 2017 heatwaves

Comparative energy technology costs

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