| | Component | Concrete roof | Solar panel roof |
| | | Present value (IDR) | Annual value (IDR) | Present value (IDR) | Annual value (IDR) | | Initial cost (IDR) | 4,800,000,000 | 566,000,000 | 13,400,000,000 | 1,580,000,000 | | Annual energy cost | 13,800,000,000 | 1,620,000,000 | 0 | 0 | | Annual maintenance cost | 364,248,000 | 42,912,000 | 683,000,000 | 80,460,000 | | Nonannual maintenance cost (for 25 years) | 515,868,000 | 60,648,000 | 0 | 0 | | Total life cycle cost | 19,400,000,000 | 2,290,000,000 | 14,100,000,000 | 1,660,000,000 |
|
|
