In Reading, United Kingdom, borough libraries are loaning out the Owl 'energy smart' meters like books, letting people see exactly how much electricity they are using.
Reading East Green campaigner Rob White said it was a victory for his campaign to get more people using the meters, adding: "We are in the middle of a recession and everyone wants to save money.
"These energy-smart meters will help people reduce their electricity bills, saving money and tackling climate change at the same time. This is a great result for Reading and the Green Party. With the smart meter, you can see how much electricity you are using in real-time.
"The librarian was telling me that before they were on the shelves, staff were borrowing them and testing them at home to see how they work and they loved the idea."