Calls mount for costs of Grimsby-Walpole power line

North East Cambridgeshire MP Steve Barclay has criticised the lack of public information about the proposed Grimsby to Walpole high-voltage line between Lincolnshire and Norfolk.

Mr Barclay raised concerns after Ofgem replied to his July 22 letter on October 26, confirming it receives regular project updates from National Grid Electricity Transmission (NGET), including cost estimates.

However, the regulator said it could not disclose those figures, stating: "Ofgem is unable to disclose current project cost estimates, as these have not been published and their release could prejudice NGET's commercial interests, including ongoing procurement and supply chain negotiations."

Mr Barclay said the secrecy raised questions for residents.

He said: "National media reports have highlighted massive cost increases on similar transmission infrastructure projects across the UK.

"Yet it seems we cannot be told whether the same cost increases have applied here to the Grimsby to Walpole project.

"The regulator confirms that it has this updated cost data.

North East Cambridgeshire MP Steve Barclay has criticised the lack of public information about the proposed Grimsby to Walpole high-voltage line between Lincolnshire and Norfolk. (Image: Steve Barclay)

"It is just that you, as bill payers, should not be told."

He also warned that the giant pylons could blight communities and the Fenland landscape, saying a project this size demands openness.

Mr Barclay said: "Transparency, accountability and informed public debate should not be optional when infrastructure on this scale is proposed."

Ofgem said cost estimates can fluctuate as projects move through engineering, environmental, and planning stages, and in response to wider market conditions.

The regulator said NGET had not yet submitted its Project Assessment application for the Grimsby to Walpole line, which is expected towards the end of 2027.

Ofgem said it would review the project's scope, delivery plans, and costs before deciding on funding.

It stressed that protecting consumers is its "principal objective," and that funding would not be granted automatically if costs rise.

Consumers would pay only for costs deemed “justified and efficient”.

NGET is expected to submit a Development Consent Order application in summer 2027.