Video | Business Headlines | Internet | Science | Scientific Ethics | Technology | Search


Marine Energy In New Zealand

aotearoa wave and tidal energy association

Marine Energy In New Zealand

Harnessing energy from marine waves and tides has become an attractive proposition as new technologies have been developed since the 1990s. Resources Offshore swells and waves contain large amounts of energy.

The main islands are exposed to the open Southern Oceans and capture the full effects of the ‘Roaring Forties’, which bring energetic waves to our west- and south-facing coasts. New Zealand’s wave resources are ‘world-class’.

New Zealand’s tides sweep anticlockwise around our coast roughly twice a day, but give only a small rise and fall (2 – 3 m). Consequently, tidal currents have lower velocities than in other countries and tidal currents are patchily distributed around New Zealand.

Offshore islands, passages and seabed irregularities can provide a focussing mechanism and there are some areas of significant tidal current flow, for example, Cook Strait. Technologies Marine energy technologies are under development in a number of countries but most technologies are not yet mature.

The first offshore commercial ‘wave farm’, utilizing a Scottish wave device called Pelamis, will be operating before the end of 2006. The first full-scale trial of a tidal energy device is being conducted in Northern Ireland. British Government forecasts that there will be over 100 MW of operational marine energy devices by 2009.

Investment in R & D and Demonstration Projects The United Kingdom, Ireland, Portugal and Denmark are currently investing significantly in marine energy with the UK being the current leader in technology developments. Canada, the United States and Australia all have active projects to develop marine energy technologies and particular sites.

New Zealand has to date invested very little in marine energy but our natural resource advantage could make marine energy a significant contributor to future energy supply. Possibly as much as 20% of New Zealand’s electricity could be generated from marine energy sources.

Projects There are currently fourteen active wave and tidal energy projects in New Zealand. All are in the early stages, all are relatively small. There are two publicly announced tidal projects, and two wave projects, one developing a wave device and a second seeking to import an overseas technology.


© Scoop Media

Business Headlines | Sci-Tech Headlines


I Sing The Highway Electric: Charge Net NZ To Connect New Zealand

BMW is turning Middle Earth electric after today announcing a substantial contribution to the charging network Charge Net NZ. This landmark partnership will enable Kiwis to drive their electric vehicles (EVs) right across New Zealand through the installation of a fast charging highway stretching from Kaitaia to Invercargill. More>>


Watch This Space: Mahia Rocket Lab Launch Site Officially Opened

Economic Development Minster Steven Joyce today opened New Zealand’s first orbital launch site, Rocket Lab Launch Complex 1, on the Mahia Peninsula on the North Island’s east coast. More>>


Marketing Rocks!
Ig Nobel Award Winners Assess The Personality Of Rocks

A Massey University marketing lecturer has received the 2016 Ig Nobel Prize for economics for a research project that asked university students to describe the “brand personalities” of three rocks. More>>


Nurofen Promotion: Reckitt Benckiser To Plead Guilty To Misleading Ads

Reckitt Benckiser (New Zealand) intends to plead guilty to charges of misleading consumers over the way it promoted a range of Nurofen products, the Commerce Commission says. More>>


Half A Billion Accounts, Including Xtra: Yahoo Confirms Huge Data Breach

The account information may have included names, email addresses, telephone numbers, dates of birth, hashed passwords (the vast majority with bcrypt) and, in some cases, encrypted or unencrypted security questions and answers. More>>


Rural Branches: Westpac To Close 19 Branches, ANZ Looks At 7

Westpac confirms it will close nineteen branches across the country; ANZ closes its Ngaruawahia branch and is consulting on plans to close six more branches; The bank workers union says many of its members are nervous about their futures and asking ... More>>

Interest Rates: RBNZ's Wheeler Keeps OCR At 2%

Reserve Bank governor Graeme Wheeler kept the official cash rate at 2 percent and said more easing will be needed to get inflation back within the target band. More>>


Get More From Scoop

Search Scoop  
Powered by Vodafone
NZ independent news