Winner: Lighting Design of the Year 2018 and Winner: Design Project of the Year 2018. The Windvogel project, designed by Studio Roosegaarde, brings together green energy, art and landscape design.

Windvogel are smart kites with glowing tethers that create green energy when they twist in the wind. They have the potential to create up to 100 kilowatts of green energy and the string of the kites are luminous, meaning they glow in the dark.

"You have these beautiful dancing lines of light floating in the air and at the same time producing green energy," said Daan Roosegaarde.

The smart kites floated in the air at the Icoon Afsluitdijk exhibition in 2017, attached by a cable to a dynamo generator. Energy was generated by the push and pull of this cable, like a bicycle.

The idea for Windvogel was conceived when Roosegaarde came across a project dreamed up by the late Dutch astronaut Wubbo Ockels, who had started developing electricity generating kites before he died in 2014.

Judges comments: "This is an extremely poetic and beautiful way of harvesting energy, whilst providing an immediate understanding of value through its visual form."

Designer: Studio Roosegaarde
Project: Windvogel
Winner of: Lighting design of the year | Design project of the year
Read more: Studio Roosegaarde