Energy

What does NIWA actually do?

What does NIWA actually do? The answer might surprise you.

NIWA provides a wide range of research and consultancy services to the energy sector, including resource assessment, forecasting, environmental impact assessments and mitigation.

Our World

Compiled by NIWA from the United Nations report "Keeping Track of Our Changing Environment: From Rio to Rio+20 (1992-2012)".

Full report at http://www.unep.org/geo/pdfs/keeping_track.pdf [4.8 MB]. 

The New Zealand Energy Demand Database contains information on all of New Zealand's energy demand, including a scenario analysis tool. The database includes historical data as well as projected future energy demand for several different scenarios. 

This help page will be updated in response to users enquiries. Questions or suggestions can be sent to: energyscape@niwa.co.nz

Pig power

Right now, millions of cubic metres of biogas either gets flared off, or wafts downwind to annoy the neighbours. But that gas could be generating electricity, powering vehicles and balancing our trade deficit at the same time, finds Dave Hansford.

An innovative biogas system, developed at NIWA Hamilton, has been embraced by the Australian pork industry. It provides an alternative electricity and heating source.

NIWA, in collaboration with industry partners, has demonstrated that Covered Anaerobic Pond (CAP) systems for the collection and use of biogas from piggery waste can make good financial sense, and improve the environmental impact of livestock farming substantially.

Craig Stevens on Cook Strait tidal energy

Dr Craig Stevens from NIWA discusses the potential for turbines to extract tidal energy from New Zealand's Cook Strait. 

Current conversion - tidal and wave energy in New Zealand

Technology for extracting energy from wave and tidal currents is now a viable alternative to traditional power generation methods. Understanding the complexity of New Zealand's wave and tidal resources is vital for this fledgling industry.

Dr Murray Poulter and Dr Craig Stevens discuss the science and future opportunities. 

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This measures and records the Electrical Conductivity (EC) and temperature of water.

This analog output sensor provides accurate long-term measurements of water depth and temperature in bores, drains and rivers.

This ultrasonic Doppler instrument is a compact, easy to use system for measuring water flow in rivers, channels and pipes.

Uses a float and counterweight system to convert water level into an electronic output that can be read by a datalogger. Accurate to within a millimetre over a wide range.

This has 16 analog inputs with an accuracy of better than 0.1% of full scale. You can configure inputs as single ended or differential and select from four input signal ranges.

The NRT is a small self-contained unit which connects to sensors, records readings from them and transmits the data to a central server via satellite communications.

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