Providing Land and Subsea Power Cable Engineering Around the World

Electricity Transmission Costing Study

Kent, United Kingdom (2nd February 2012) -

A major new report into the costs of new transmission power infrastructure was launched on 31st January.

The Infrastructure Planning Commission requested the report so it could be used as a point of reference to inform its evaluation of planning applications for new electricity infrastructure to connect future power sources to the national grid. One of the main findings of the report is that the cost of installing new power infrastructure underground, using existing technologies, is always more expensive than installing overhead lines. The report analyses the whole life costs of installing and maintaining new high voltage transmission circuits under the ground, under the sea and over ground. The report also identifies factors that have an impact on costs - such as terrain, route lengths and loading.

The report's remit purely relates to engineering costs. Although it does acknowledge the aesthetic, human and environmental impacts, it makes no analysis of these areas.

The costs in this publication were compiled from data supplied by a number of manufacturers, installers and transmission operators from within the UK and around the world.

Parsons Brinkerhoff were engaged to complete the study. Cable Consulting International collected, analysed and contributed the underground and subsea cable elements for the study as well as jointly authoring the report with Parsons Brinkerhoff.

The report can be downloaded from

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