TEDGlobal 2007
William Kamkwamba: How I built a windmill
William Kamkwamba om att bygga ett vindkraftverk
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När han var endast 14 år gammal byggde den Malawiske uppfinnaren William Kamkwamba ett vindkraftverk till sin familj av reservdelar, utifrån enkla skisser han hittade i en biblioteksbok.
William Kamkwamba - Inventor
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." Full bio
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." Full bio
Double-click the English transcript below to play the video.
00:29
Chris Anderson: William, hi. Good to see you.
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Chris Anderson: Hej William. Trevligt se dig.
00:31
William Kamkwamba: Thanks.
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William Kamkwamba: Tack.
00:32
CA: So, we've got a picture, I think? Where is this?
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CA: Så, jag tror vi har en bild? Var är detta?
00:37
WK: This is my home. This is where I live.
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WK: Detta är mitt hem. Detta är där jag bor.
00:41
CA: Where? What country?
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CA: Var? Vilket land?
00:43
WK: In Malawi, Kasungu. In Kasungu. Yeah, Mala.
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WK: I Malawi, Kasungu. I Kasungu. Ja. Mala.
00:46
CA: OK. Now, you're 19 now?
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CA: OK. Du är 19 nu?
00:49
WK: Yeah. I'm 19 years now.
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WK: Ja. Jag är 19 år nu.
00:51
CA: Five years ago you had an idea. What was that?
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CA: För fem år sedan fick du en idé. Vad var det?
00:54
WK: I wanted to make a windmill.
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WK: Jag ville bygga ett vindkraftverk.
00:56
CA: A windmill?
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CA: Ett vindkraftverk?
00:57
WK: Yeah.
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WK: Ja.
00:58
CA: What, to power -- for lighting and stuff?
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CA: Och - vad - för att driva - belysning och saker?
01:02
WK: Yeah.
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WK: Ja.
01:04
CA: So what did you do? How did you realize that?
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CA: Så vad gjorde du? Hur förverkligade du det?
01:07
WK: After I dropped out of school, I went to library,
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WK: När jag lämnat skolan så gick jag till biblioteket.
01:11
and I read a book that would -- "Using Energy,"
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och läste en bok som skulle -- "Använda energi,"
01:15
and I get information about doing the mill.
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och jag fick information om att göra vindkraftverket.
01:18
And I tried, and I made it.
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Och jag försökte och jag gjorde det.
01:20
(Applause)
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(Applåder)
01:30
CA: So you copied -- you exactly copied the design in the book.
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CA: Så du kopierade - du kopierade designen exakt från boken.
01:34
WK: Ah, no. I just --
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WK: Äh, nä. Jag bara -
01:36
CA: What happened?
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CA: Vad hände?
01:38
WK: In fact, a design of the windmill that was in the book,
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WK: Egentligen, designen av kraftverket i boken,
01:42
it has got four -- ah -- three blades,
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det har fyra - äh - tre blad,
01:46
and mine has got four blades.
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och mitt har fyra blad.
01:49
CA: The book had three, yours had four.
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CA: Boken hade tre, ditt hade fyra.
01:51
WK: Yeah.
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WK: Ja.
01:52
CA: And you made it out of what?
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CA: Och vad byggde du det av?
01:54
WK: I made four blades, just because I want to increase power.
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WK: Jag gjorde fyra blad, bara för jag ville öka kraften
01:59
CA: OK.
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CA: OK.
02:00
WK: Yeah.
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WK: Ja.
02:01
CA: You tested three, and found that four worked better?
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CA: Du provade tre, och upptäckte att fyra fungerade bättre?
02:03
WK: Yeah. I test.
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WK: Ja, jag testade.
02:05
CA: And what did you make the windmill out of?
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CA: Och vad byggde du vindkraftverket av?
02:08
What materials did you use?
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Vad gjorde - vilka material använde du?
02:10
WK: I use a bicycle frame, and a pulley, and plastic pipe, what then pulls --
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WK: Jag använde en cykelram, en remskiva, ett plaströr, som sen drar --
02:16
CA: Do we have a picture of that? Can we have the next slide?
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CA: Har vi en bild av det? Kan vi ta nästa bild?
02:19
WK: Yeah. The windmill.
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WK: Ja. Vindkraftverket.
02:21
CA: And so, and that windmill, what -- it worked?
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CA: Och så, och vindkraftverket, vad - det fungerade?
02:25
WK: When the wind blows, it rotates and generates.
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WK: När vinden blåser, roterar det och genererar.
02:30
CA: How much electricity?
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CA: Hur mycket elektricitet?
02:31
WK: 12 watts.
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WK: 12 watt.
02:33
CA: And so, that lit a light for the house? How many lights?
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CA: Och, så det tände en lampa för huset? Hur många lampor?
02:38
WK: Four bulbs and two radios.
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WK: Fyra glödlampor och två radioapparater.
02:40
CA: Wow.
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Ca: Wow.
02:41
WK: Yeah.
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WK: Ja.
02:42
(Applause) CA: Next slide --
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CA: Och så - (Applåder) - nästa bild -
02:52
so who's that?
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så vilka är det?
02:54
WK: This is my parents, holding the radio.
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WK: Det är mina föräldrar, med radion.
02:57
CA: So what did they make of -- that you were 14, 15 at the time --
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CA: Så vad tyckte de om - att du var 14, 15 vid denna tid -
03:01
what did they make of this? They were impressed?
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vad tyckte de om detta? Var de imponerade?
03:04
WK: Yeah.
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WK: Ja.
03:05
CA: And so what's your -- what are you going to do with this?
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CA: Och så vad är din - vad tänker du göra med detta?
03:07
WK: Um --
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WK: Öh -
03:09
CA: What do you -- I mean -- do you want to build another one?
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CA: Vad tänker du - jag menar - vill du bygga ett till?
03:13
WK: Yeah, I want to build another one --
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WK: Ja, jag vill bygga ett till -
03:16
to pump water and irrigation for crops.
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för att pumpa vatten och bevattna - bevattning för odlingar.
03:21
CA: So this one would have to be bigger?
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CA: Så denna måste bli större?
03:23
WK: Yeah.
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WK: Ja.
03:24
CA: How big?
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CA: Hur stor?
03:25
WK: I think it will produce more than 20 the watts.
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WK: Jag tror det kommer att ge mer än 20 watt.
03:31
CA: So that would produce irrigation for the entire village?
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CA: Så det skulle kunna bevattna hela byn?
03:35
WK: Yeah.
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WK: Ja.
03:37
CA: Wow. And so you're talking to people here at TED
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CA: Wow. Och nu talar du till folk här vid TED
03:40
to get people who might be able to help in some way
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för att få folk som kanske har möjlighet att hjälpa på något vis att -
03:44
to realize this dream?
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att realisera denna dröm?
03:46
WK: Yeah, if they can help me with materials, yeah.
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WK: Ja, om de kan hjälpa mig - med material. Ja.
03:50
CA: And as you think of your life going forward,
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CA: Och när du tänker på ditt liv framöver,
03:53
you're 19 now,
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du är 19 nu, tänker du
03:56
do you picture continuing with this dream of working in energy?
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tänker du fortsätta med denna dröm, att arbeta med energi?
04:00
WK: Yeah. I'm still thinking to work on energy.
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WK: Ja. Jag tänker fortsätta att arbeta med energi.
04:05
CA: Wow. William, it's a real honor to have you at the TED conference.
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CA: Wow. William, det är en verklig ära att ha dig här vid TED konferensen.
04:09
Thank you so much for coming.
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Tack så mycket för att du kom.
04:11
WK: Thank you.
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WK: Tack.
04:13
(Applause)
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(Applåder)
ABOUT THE SPEAKER
William Kamkwamba - InventorTo 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."
Why you should listen
William Kamkwamba, from Malawi, is a born inventor. When he was 14, he built an electricity-producing windmill from spare parts and scrap, working from rough plans he found in a library book called Using Energy and modifying them to fit his needs. The windmill he built powers four lights and two radios in his family home.
After reading about Kamkwamba on Mike McKay's blog Hactivate (which picked up the story from a local Malawi newspaper), TEDGlobal Conference Director Emeka Okafor spent several weeks tracking him down at his home in Masitala Village, Wimbe, and invited him to attend TEDGlobal on a fellowship. Onstage, Kamkwamba talked about his invention and shared his dreams: to build a larger windmill to help with irrigation for his entire village, and to go back to school.
Following Kamkwamba's moving talk, there was an outpouring of support for him and his promising work. Members of the TED community got together to help him improve his power system (by incorporating solar energy), and further his education through school and mentorships. Subsequent projects have included clean water, malaria prevention, solar power and lighting for the six homes in his family compound; a deep-water well with a solar-powered pump for clean water; and a drip irrigation system. Kamkwamba himself returned to school, and is now attending the African Leadership Academy, a new pan-African prep school outside Johannesburg, South Africa.
Kamkwamba's story is documented in his autobiography, The Boy Who Harnessed the Wind: Creating Currents of Electricity and Hope. A documentary about Kamkwamba, called William and the Windmill, won the Documentary Feature Grand Jury award at SXSW in 2013 (watch a trailer ). You can support his work and other young inventors at MovingWindmills.org.
William Kamkwamba | Speaker | TED.com