A Life-Cycle-Based Environmental Passport for High-Voltage Substations

This study applies a case study methodology to examine how a life‑cycle‑based environmental passport can be used as a decision‑support instrument in the design phase of high-voltage substations. The methodology aims to capture how environmental information is generated, structured, and interpreted within engineering and organisational contexts. A case study approach is appropriate because the environmental passport is embedded in ongoing projects, existing design processes, and varying levels of data maturity, which should not be isolated from their operational setting. A Case is selected from current practice within a transmission system operator TenneT TSO to ensure relevance, realism, and transferability of insights. The case comprises a 150 kV air‑insulated high-voltage substation,…