16. Property, plant and equipment
The book values of the individual categories are as follows:
| In millions of CHF | 31.12.2025 | 31.12.2024 | ||
|---|---|---|---|---|
| Construction in progress | 468.4 | 400.5 | ||
| Substations | 590.8 | 613.4 | ||
| Lines | 1,033.0 | 1,067.3 | ||
| Properties and buildings | 173.2 | 163.3 | ||
| Other property plant and equipment | 23.2 | 20.0 | ||
| 2,288.6 | 2,264.5 |