Category Archives: Resources

Loony-toon negative wholesale electricity prices appear in AEMO Queensland data

First time I have noticed negative price from Qld – minus $1,000 MW 3.20am 13 July 2017 – tick “QLD” on left and “5 Min” on right. Who knows why? Just more Govt madness. Not uncommon lately to get negative price periods in Tasmanian data. NEM Dispatch Overview always worth checking – see how Qld is the “anchorman” of our grid. NemWatch gives a generation snapshot.

Western Australia needs long-term vision for agriculture

A reader in Bunbury put me on to this article by John Barrington “State needs long-term vision for agriculture” published in The West Australian (but apparently not on the www). If anybody can find a link please pass on. The chart of WA wheat production history is mine –

I thought I had better point out that something is going right in WA agriculture. To read article click Continue reading Western Australia needs long-term vision for agriculture

Will the NSW Govt ever approve the Shenhua Watermark coal mine?

I think it is a few months off 9 years ago in 2008 that the NSW Govt agreed to sell big Chinese coalminer Shenhua the Watermark orebody near Gunnedah for $300 million. Shenhua was hit with other payments over $350 million then bought land and would have spent over a $Billion by now see blog 2 years ago. Anybody reading Shenhua Watermark news headlines might conclude they were a community welfare org. not a global ranking coal miner.

Global nuclear power numbers from BP

Curious about global nuclear power trends and implications for the uranium market – I extracted the latest from the latest BP Statistical Review of World Energy that now includes 2016. Global electricity generation by fuel type. I had to calculate the fossil fuel column by subtraction.
Click for chart of main global nuclear generating nations. Shows the shutdown by Japan after 2011 earthquake & tsunami – and very slow pace of restarts.

ABC muddles reasons for electricity price rises

The ABC Business Editor Ian Verrender writes – quote – “Ever since the carbon tax was removed, power prices have only headed one way; upwards.” Not according to my Canberra power bills Ian which show clearly how retail prices fell after mid 2014 when the Carbon Tax was repealed. When I get time I can update this chart but there is enough here for now. After 2014 there was talk then action on the closing of Port Augusta coal fired generation which started that huge upsurge in AEMO wholesale prices. Then the closing of Hazelwood took more dispatchable power out of the grid. No wonder prices are on fire.

Dry winter across ditch puts up electricity prices as coal fires up

Thanks to reader on Mainland Aotearoa this story from Stuff – Power price surge too hot for some customers 20 June 2017 – New Zealand is blessed with a high proportion of hydro power but a dry winter so far has lead to higher output at the Huntly coal fired generator south of Auckland. Summary of the Electricity sector in New Zealand – We are having a dry start to winter too but our hydro sector is much smaller than New Zealand.

Why are Tasmanian electricity prices spiking to over $2,000 per MWhr?

Tasmanian electricity is supplied by their Govt owned mostly hydro and lesser wind & gas fired generation.
Why is that Tasmanian wholesale AEMO prices spike to over $2000 per MW hour twice in recent days?
There is only one supplier – Hydro-Electric Corporation owned by the Tasmanian Goverment. Nemwatch for current generation and AEMO for prices and demand charts and AEMO NEM dispatch overview. Obviously Hydro Tasmania is in a dry spell and in order to conserve water levels will buy Victorian power through BassLink when prices suit them – see the AEMO NEM dispatch overview for interstate flows in real time.