Environmentally sustainable transitions of US district energy systems: Perspectives from infrastructure operators/designers through the co-evolutionary lens

Business & Economics

• Energy Systems 100%
• Systems Perspective 96%
• Designer 74%
• Operator 74%
• Evolutionary 63%
• United States of America 33%
• Niche 15%
• Cooling 12%
• Heating 11%
• Sustainability 10%
• Multi-level Perspective 6%
• Applied Research 6%
• State Policy 5%
• Steam 5%
• Fossil Fuels 5%
• Ecosystem 5%
• Structured Interview 4%
• Agenda 4%
• Policymaker 3%
• Air 3%
• Expertise 3%
• Energy 3%
• Innovation 3%
• Responsibility 3%
• Factors 1%

Engineering & Materials Science

• Lenses 84%
• Sustainable development 73%
• Heating 59%
• Cooling 57%
• Ecosystems 44%
• Fossil fuels 40%
• Steam 34%
• Air 22%

Earth & Environmental Sciences

• infrastructure 61%
• transition 51%
• energy 40%
• niche 13%
• policy 11%
• sustainability 6%
• cooling 6%
• heating 6%
• applied research 5%
• responsibility 4%
• fossil fuel 4%
• low pressure 4%
• innovation 3%
• document 3%
• organization 3%
• market 3%
• demand 3%
• services 2%
• ecosystem 2%
• air 2%