Dutch designers and urban planners often look for a way to add value to a project, to make a structure serve two purposes. The solar panels on the platform roofs at Utrecht Central Station are a prime example. Not only do the roofs protect people from the elements while they wait for their train, they also harness energy from the sun.

Designed by Benthem Crouwel Architects in Amsterdam, three platform roofs have solar cells that collect generate 85,000 kWh of electricity a year, or enough to power 25 households.