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| Indicative costs for connection works | ||
| (variation is dependent on equipment ratings) | ||
| Trenching | Public highway | £50-£120/m |
| Unmade ground | £20-£70/m | |
| Underground cable | LV cable | £15-£30/m |
| 11kV cable | £30-£90/m per circuit | |
| 33kV cable | £60-£110/m per circuit | |
| Switchgear | LV | £7k-£15k per unit |
| 11kV | £15k-£30k per unit | |
| Transformers | 11kV-LV | £15k-£19k per unit |
| Contingency | Typically 6-9% of connection works | |
| Engineering | Typically 4-7% of connection works | |
| Excludes civil works, reinforcement, diversions, wayleaves and easements | ||