This is the Tacoma Reads book! I was looking back and I can't believe I haven't mentioned it here.
It's a non-fiction book by William Kamkwamba, a teenager in Malawi. After a devastating famine, he taught himself electrical theory from a library book, and built a windmill on his family farm. It powered a lightbulb, then two lightbulbs, and eventually a water pump, that allowed extra growing seasons, ending a cycle of poverty.
The author of the book will be here on April 10 to share his story. It's a great read! More here at the Library's website.