Around £8 million pounds is going to be spent on future-proofing Reading's electricity infrastructure.
Scottish and Southern Electricty Networks say they'll start work this week to replace almost four kilometres of underground cable.
The energy provider says it will benefit homes and businesses both in Reading and the surrounding suburbs.
Letter drops will be carried out to homes and businesses to update them on the phases of the project as it reaches their immediate area.
SSEN’s Construction Manager for the Reading works, Miles Crossley, said:
"Reading is a thriving city and this programme of works will strengthen its existing power supply, while also allowing for future commercial and residential connections.
"The substation element alone will provide power to over 26,000 customers, with the overall programme of works keeping the infrastructure resilient and secure for decades to come.
"As always, SSEN aims to minimise disruption, while maximising the safety of our colleagues and our customers who may be in the vicinity of this project. For the duration of the works, SSEN will be available to address any questions raised by the community, so that all parties involved are able to influence any possible impact these works may have."