Energy systems in sustainability-profiled districts in Sweden: A literature review and a socio-technical ecology approach for future research

Over the past 30 years, several sustainability-profiled districts have been developed in Sweden with high ambitions for the energy systems, such as Hammarby Sjöstad in Stockholm and Western Harbor in Malmö. Research into energy systems in urban districts is interdisciplinary and therefore spread over different areas, which means that an overview of the current state of knowledge and lessons learned is lacking. This semi-systematic literature review aims to provide an overview of previous research on the planning, development, and evaluation of energy systems in sustainability-profiled districts in Sweden. The review of 70 journal and conference articles reveals seven research themes in the interdisciplinary nexus of energy systems and sustainability-profiled districts: (1) Conceptualizations and critique of sustainability-profiled districts, (2) Evaluations of energy goals and requirements, (3) Technical and economic assessments of heating and electricity systems, (4) Integration of innovative (energy) solutions in urban planning, (5) Stakeholder perspectives on energy systems, (6) Stakeholder collaboration on the building and the district level, (7) Governance and policy instruments for sustainable urban development and energy systems. We use a socio-technical ecology approach to critically discuss the existing research on energy systems planning, development, and evaluation to guide future research on energy systems development in urban districts. An increase in integrated approaches across all identified research themes and relationships between scales, phases, and impacts are discussed as central observations that can guide future research. Future research is needed on new or better-adapted energy indicators, the inclusion, perspectives, and roles of (new) stakeholders, and the consideration of ecology and nature in research on the planning, development, and evaluation of energy systems.