Notes - Historical Background

The following notes are taken from Wind Turbine Technology by Ahmad Hemami.

• One of the oldest forms of energy
• windmills
• water mills
• Types of windmills based on rotation axis
• vertical axis
• horizontal axis
• Generation for electricity generation 1970s
• oil crisis 1972
• Up until 1992 commercial wind turbines generated roughly 225 kilowatts
• 2002 generation grown by factor of 10
• now installations include 6183 MW wind farms
• EWEA(European Wind Energy Association)
• 2009 wind farms built total 199 offshore 577 MW
• Denmark provided 20% of its energy from wind

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