Energy

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NIWA worked with the community on the island of Totoya, in the Yasayasa Moala Island group in south-east Fiji to assess their energy security and energy related socio-economic opportunities.

About tidal energy in the Cook Straight.

Harnessing tidal power for electricity generation will be a landmark in broadening New Zealand’s already impressive renewable energy portfolio, a marine energy conference is to be told.

“In the drive to replace non-renewable fossil fuels with renewable energy sources, marine energy is emerging as a viable option in the near-future and a real complement to wind, geothermal and hydro resources,” says NIWA oceanographer, Dr Craig Stevens.

Wind is a renewable and environmentally friendly energy source.

We provide training in the use and maintenance of our instruments, software and data collection systems.

We offer service contracts to minimize downtime if an instrument fails. We keep a full range of spares in our Christchurch store and can courier a spare to the contract holder on receiving a request.

We evaluate new products to ensure that they're 'fit for purpose' before we approve them for widespread use.

We service and support individual instruments, systems and nationwide networks.

We install monitoring and control systems of all sizes, throughout New Zealand, in the Pacific Islands and even the Antarctic.

We supply a complete range of environmental monitoring equipment, from small components to large systems. We also supply accessories and miscellaneous items.

We manufacture items such as cables and circuit boards through to subassemblies for both standard and specialized systems.

We develop custom environmental monitoring and irrigation flow-control solutions.

We design instruments and systems of instruments. We have full mechanical and electronic CAD capability.

A cost-effective water level recorder. Comprises a water surface float-driven shaft encoder and internal data logger with rainfall input. Connects directly to compatible communications devices.

Back in April 2007, the  Pōhatuiri Marae Trust decided to rebuild there marae near Waitomo. The trust approached NIWA about renewable energy solutions for providing electricity. We asked “electricity for what?”, and so began an interesting learning process. A particularly relevant observation was the older (and often more self reliant) solutions to energy, waste management and water, should not be over-looked.

In recent years, the New Zealand pig industry has been seeking solutions to odour emissions from open waste stabilisation ponds. One of the solutions is to integrate anaerobic digestion with biogas recovery into the effluent management system. A recent example is Taranaki pig farmer Steve Lepper.  
Steve wanted to reduce the odour emissions from the waste management system of his 450 sow farrow-to-finish piggery.
Odour minimisation was achieved by installing a custom designed covered anaerobic pond up front of the existing open waste stabilisation ponds.

"It’s not rocket science, says Niwa’s Rupert Craggs.  Recently he and a few others demonstrated how easy it is to produce electricity from the biogas that comes off farm effluent ponds, using a converted generator.
“We plugged in two fan heaters, three spotlights and a 3 phase motor – and they ran for over two hours.  At full throttle it generates 13kW, we were running it at nine or ten.”
Such technology is not novel, he says.  “Most large domestic wastewater treatment plants capture biogas.  For example, they do it here in Hamilton and

Solarview, a free web-based tool from NIWA, helps you get the most out of your house.

World’s largest wastewater algae to bio-crude oil demonstration puts CO2 to good use.

This calculator estimates the solar energy that can be collected by a solar capture device (solar panel) at a given address, panel direction and roof slope.

Pole-to-pole flights provide a global picture of greenhouse gases: this month a team of international scientists will fly from the Arctic to the Antarctic aboard an exceptional jet.

A world leading research project demonstrating wastewater conversion to bio-oil.

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