Achieving carbon neutrality – eliminating as much carbon as you emit – is an ambitious goal in itself. But Stockholm is keen to go even further, and wants the former port district of Royal Seaport to be “climate positive” by 2030. New sustainability standards have been set for buildings, waste management and mobility, giving priority to pedestrians and cyclists, etc. Despite scepticism from many developers, the political commitment remained strong, and discussions helped to fine-tune the solutions put forward. Ten years on, the early returns are promising. CO2 emissions per capita are down strongly, for example. To go even further, a carbon credits system is set to be introduced, which should also impact developments in neighbouring districts.