Reducing cost and risk of transmission and distribution of electricity from offshore wind

Why is this gap important?

As turbine costs drop in the SDS, interconnection and balance-of-system take up a higher share of overall installation costs. Learning on design concepts as well as fundamental technology improvements to power engineering equipment will be necessary.

Technology solutions

Reducing the volume of HVAC infrastructure on the plant side is a priority. High voltage interconnections using DC are key in deep-water projects, and further loss reductions and cost drops of cabling equipment are needed. Increasing voltages in offshore wind farm cabling and infrastructure to reach 400 kV (TRL 9) would result in reduced losses. Low frequency transmission could further reduce losses, but few initiatives are in place. Array interconnection, streamlined cable layouts.

Higher voltages to reach 400 kV Readiness level:

Low frequency transmission Readiness level:

Colored bars represent the Technology Readiness Level (TRL) of each technology. Learn more about TRLs

What are the leading initiatives?

The US National Offshore Wind R&D consortium allocates USD 41 million in total to offshore wind research, with the first request for proposals as of March 2019 including reducing the cost and risk associated with the transmission and distribution of electricity from offshore wind.

The Danish Technical University has a leading programme in low frequency transmission.