Ideas worth spreading

How I built a windmill

3,738,636 views | William Kamkwamba • TEDGlobal 2007

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.

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

See speaker profile

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."

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