Ideas worth spreading

3,703,862 views | William Kamkwamba • TEDGlobal 2007

How I built a windmill

When he was just 14 years old, Malawian inventor William Kamkwamba built his family an electricity-generating windmill from spare parts, working from rough plans he found in a library book.

This talk was presented at an official TED conference. TED's editors chose to feature it for you.

When he was just 14 years old, Malawian inventor William Kamkwamba built his family an electricity-generating windmill from spare parts, working from rough plans he found in a library book.

This talk was presented at an official TED conference. TED's editors chose to feature it for you.

About the speaker

William Kamkwamba

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To power his family's home, young William Kamkwamba built an electricity-producing windmill from spare parts and scrap -- starting him on a journey detailed in the book and film "The Boy Who Harnessed the Wind."