"Amsterdam, kies voor Groene Energie" (Amsterdam, choose green energy) is a local volunteer campaign group, powered by Greenpeace.
The group is lobbying the municipality to make a full switch to green energy in all their operations. To visualize the campaign the volunteers went through the city and asked Amsterdam residents to endorse their campaign, by playfully holding up a solar panel and pose for photos. The panel has historic value, as it is one of the first solar panels in the Netherlands and it has been used before during several Greenpeace actions.