Ofgem consults on subsea grid links The regulator seeks views about subsea electricity transmission links that will connect Scotland and England along the east coast Image: chrisdorney / Shutterstock Ofgem has today published a consultation for the first two of a series of planned underwater high voltage direct current (HVDC) links for the UK’s east coast. The plan is to construct two HVDC links with a capacity of 2GW each connecting Scotland to the northeast of England. The Eastern HVDC project represents an investment of £3.4 billion, which is claimed to be the largest spend on electricity transmission in the UK’s recent history.