What are the costs of an underground cable in the cities you’re considering, expressed as: 1. Cost per kWh transmitted? 2. Cost per person served? 3. Cost pe

What are the costs of an underground cable in the cities you’re considering, expressed as: 1. Cost per kWh transmitted? 2. Cost per person served? 3. Cost per pound of GDP generated? Please provide this for London and the other locations you have in mind.