Also relevant is private sector support for NSCOGI. When looked at collectively, existing and planned offshore energy investments are suggestive of this possibility. There are already several sub-sea inter connectors between European grids. Recent examples include the NorNed (Dutch-Norwegian), BritNed (British-Dutch) or East-West (British-Irish) interconnect.. However, these are ‘trading’cables not connected to offshore wind farms. These cables are vital for electricity trading because the Nordic states have among the cheapest and most reliable electricity supply, because of Norway’s large-scale hydro-electric storage capacity.