The Tarchon project has been created to strengthen energy security, enhance grid resilience, and support the transition to a low-carbon energy system in Europe. By linking the UK and German electricity transmission networks, the project facilitates the efficient exchange of electricity, optimising the use of renewable energy resources and contributing to a more integrated and flexible European energy market and creating a strong, self-sufficient energy network in the UK.

It will also enhance renewable energy integration by facilitating the export and import of renewable power, reducing curtailment (where a power generator may be requested to reduce generating capacity due to the inability for the grid to absorb this), and ensuring that valuable renewable resources are better utilised in both the UK and Germany.