Ocean power in New Zealand speed. Because the tidal speed doubles, eight times more tidal power can be produced at spring tides than at neap tides. The entrance to Kaipara Harbour, one of the largest harbours in the world, is a channel to the Tasman Sea. It narrows to a width of , and is over deep in parts. On average, Kaipara tides rise and fall . At high tide, nearly 1000 square kilometres are flooded. Spring tidal flows reach 9 km/h (5 knots) in the entrance channel and move 1,990 million cubic metres per tidal movement or 7,960 million cubic meters daily. In 2011,
European Union and its Member States — Certain Measures Relating to the Energy Sector member is, to our regrets, rather disappointing. Russia has not shown willingness to put its trade measures in line with basic WTO obligations and has continued raising a number of trade obstacles inconsistent with its WTO obligations." European Union and its Member States — Certain Measures Relating to the Energy Sector European Union and its Member States — Certain Measures Relating to the Energy Sector, DS476, is the formal name of a case brought by the Russian Federation against the European Union and its member states in the World Trade Organization's Dispute Settlement Body. The case was formally initiated with