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The UK’s ambition to reach net zero carbon emissions by 2050 means big changes in the way we use energy, for transport and home heating in particular. To manage this increase in low carbon technologies, the electricity network that supplies homes and businesses is evolving.

UK Power Networks owns and maintains the electricity cables and overhead power lines across the East of England, South East and London, making sure power flows reliably, safely and securely.

Key focus areas

In Cambridge, we need to access more power capacity to meet the growing demand that is coming onto the network, through the construction of three new substations.

These substations do not generate electrical power. Electricity is generated at power stations, or wind and solar farms. Instead, an electricity substation is a collection of equipment, including transformers and switchgear and some buildings, which reduce the voltage of electrical power down to voltages that can be used by homes and businesses.

The three planned substations will take electrical power from the overhead power lines that run across Greater Cambridge and transform it down from 400kV to 132kV, 33kV and 11kV.