Metric · draft
A measurable indicator (students often call it a KPI) used as evidence for a design decision.
| Category | Economy |
| Unit | % / % over 30 years |
| How it is calculated | Investment cost vs. sum of operating costs over a 30-year life (undiscounted or as net present value). |
| Origin | student |
| Status | draft |
Also known as: CapEx/OpEx ratio · 30-year life-cycle cost split · CapEx/OpEx ratio over 30 years · Life-cycle cost
What it measures
Shows whether spending more upfront (insulation, PV, reuse) pays back in operation.
Calculation
Investment cost vs. sum of operating costs over a 30-year life (undiscounted or as net present value).
Connections
- Used in case studies: Adam Večeřa, Katrin Rybinskiy, Lindsay Daphne Macuja
- Tools that can calculate it: One Click LCA
- Informs decisions on: Operational energy and on-site renewables, Embodied carbon and adaptive reuse of logistics buildings
Something wrong or missing? Suggest a correction