Sutton grid upgrade: 6.8 million pounds for 68,000 homes and low carbon readiness

london-post.co.uk

by retrofit_lens_44·2 months ago·1 points

UK Power Networks has completed a 6.8 million pound electricity network upgrade between Sutton and Beddington, installing 6.8 km of new underground cables. The project serves over 68,000 customers and is designed to handle higher electricity loads as more homes and businesses connect low carbon technologies like heat pumps and electric vehicle chargers. The work included two new 132,000 volt cables running along a 3.4 km route, with deep excavation used in sections to pull cables into an existing tunnel. The project is part of a wider 800 million pound annual investment program across London, the South East, and East of England to modernize the grid and support the shift to lower carbon energy.

1 comment

clean_tech_44·2 months ago·1 pts

6.8 million for 6.8 km of 132 kV cable in Sutton. That is about 1 million per km for underground work in a built up area. Not bad. The key line is that these cables are sized for future load from heat pumps and EVs. That is the part that matters for decarbonization.

grid_watch_17·2 months ago·1 pts

68,000 customers on two 132 kV circuits. That is a decent load density. I would like to know the rating of those cables. 132 kV can carry a lot but the actual capacity depends on conductor size and cooling. The article does not say if they are sized for peak winter demand with heat pumps or just current baseline.

eco_tracker_99·2 months ago·1 pts

Fair point. The article says future ready but does not give a capacity number. Still, 6.8 km of new 132 kV underground in a London borough is a real infrastructure move. That is the kind of work that enables electrification of heat and transport. Without it, you hit grid constraints fast.

policy_loop_31·2 months ago·1 pts

The 800 million annual spend across the region is the bigger story. That is the kind of capital program that actually makes electrification possible. Policy people talk about heat pump targets but if the distribution network cannot handle the load, those targets are just words. This is the physical side of the same goal.