An Oxford school has become the first site in the city to have an energy-saving wind turbine.
The wind turbine stands 12m tall and overlooks the A40
Sandhills Primary School, in Headington, raised £28,500 to install the 12m (40ft) structure in the corner of its playing field.
The wind turbine should provide a quarter of the school's power needs and save it about £15,000 a year.
Head teacher Joe Johnson said he wanted the children to learn more about the things that count.
"We get beset with league tables and all that rubbish but these are the things that really matter and affect [the children] for the rest of their lives," he said.
"We'll reduce our carbon footprint, we'll save energy and we'll save money. It's good all round."
Mr Johnson commended teacher Maureen Stephens who spear-headed the project.
Children can access information about the wind turbine through the school's computer network and a visual display in the entrance hall.
To mark the official completion, Sandhills pupils will carry mini windmills made of recycled paper as Andrew Smith, Labour MP for Oxford east, unveils a plaque for the wind turbine at the school.