Climate change calls for rapid and extensive transition worldwide, and citizen empowerment is a key to change at city district level. A backcasting study in Stockholm’s recent brownfield development Hammarby Sjöstad explores this, asking: ‘What must local actors do to reduce citizens’ consumption-based emissions by half till 2030? ‘Individual actors’ transition pathways are explorative and concern ground transport, food, housing, aviation and other consumption. In a quantitative scenario, these pathways are scaled up to district level, asking ‘How many actors must do how much, to reach the target?’ An interwoven qualitative approach highlights organizational aspects. The upscaled backcasting scenario is normative, in part prognostic and explorative. Feasibility is ensured through integrating the issues of ‘What to Change’ and’ Change by Whom’. Results indicate that the local target is feasible if most actors maximize the use of their individual transition pathways. Additionally, Stockholm City and other external actors must realize their targets, including technological development. New organizational models must involve energy managers, supermarkets, car sharing companies etc. as change agents. The whole is catalyzed by a citizen engagement process, driven by local network builder and transition agent ElectriCITY, enabled through action research within the Sharing Cities Sweden research and innovation program.

气候变化要求在世界范围内进行迅速而广泛的过渡，而赋予公民权力是在城市地区进行变革的关键。斯德哥尔摩最近的棕地开发项目哈马比·约斯塔德（HammarbySjöstad）的一项后瞻性研究对此进行了探索，并提出了疑问：“到2030年，当地参与者必须采取什么措施才能将公民基于消费的排放减少一半？“个体行为者”的过渡途径是探索性的，涉及地面运输，食品，住房，航空和其他消费。在定量的情况下，这些途径被扩展到地区级别，询问“要达到目标，有多少行为者必须做多少？” 交织的定性方法突出了组织方面。升级后备场景是规范性的，部分是预后性的和探索性的。通过整合“要更改的内容”和“由谁更改”的问题来确保可行性。结果表明，如果大多数行为者最大限度地利用其各自的过渡途径，则当地目标是可行的。此外，斯德哥尔摩市和其他外部参与者必须实现其目标，包括技术开发。新的组织模式必须包括能源经理，超级市场，汽车共享公司等作为变革推动者。