Capital expenditure (capex) for geothermal activation of tunnel lining for Manchester and Crewe tunnels
| Tunnel | Tunnel dimensions | Running tunnel length for thermal activation: km | Capex per km: £ million | Total capex: £ million |
|---|---|---|---|---|
| Manchester | Two tunnels (dia. 7.6 m, length 12.8 km) and four ventilation shafts | 10 (+131 m for ventilation shafts) | 1.37 | 13.7 |
| Crewe | Two tunnels (dia. 8.8 m, length 6.8 km) and two ventilation shafts | 6 (+66 m for ventilation shafts) | 1.47 | 8.9 |
| 22.6 |
| Tunnel | Tunnel dimensions | Running tunnel length for thermal activation: km | Capex per km: £ million | Total capex: £ million |
|---|---|---|---|---|
| Manchester | Two tunnels (dia. 7.6 m, length 12.8 km) and four ventilation shafts | 10 (+131 m for ventilation shafts) | 1.37 | 13.7 |
| Crewe | Two tunnels (dia. 8.8 m, length 6.8 km) and two ventilation shafts | 6 (+66 m for ventilation shafts) | 1.47 | 8.9 |
| 22.6 |
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