Over the next 10 years, TenneT expects its investments in offshore wind in the Netherlands and Germany to range from €7bn to €9bn.
The TSO expects to realise more than 7GW of offshore wind transmission projects in the German part of the North Sea by 2019.
By 2023, the operator plans to complete 3.5GW of connection capacity in the Dutch sector.
The TSO has also published a green bonds framework to help identify the sustainability quality of the projects to be financed.
TenneT CFO Otto Jager said: "By launching a Green Bonds programme, TenneT demonstrates its continuing commitment to rank among the leading TSOs in Europe in the area of Corporate Social Responsibility.
"As this could eventually evolve into a multi-billion issuance programme, we are giving the market for Green Bonds a substantial boost to encourage institutional investments in the European energy transition at market-competitive cost."
TenneT crosses borders and connects countries with about 21,000km of high-voltage lines.
