Negative electricity prices support case AEMO must be reformed

While wind was strong South Australia had a ~quarter of the day on the 22 July 2017 at an AEMO wholesale (RRP) price of minus $60 per MW hour(check SA & 5 Min). In a year of watching AEMO data I have not seen such an extended period of negative RRP price. Now we all know that the gas fired generator(s) that continued working with AEMO RRP at -$60 will not mail cheques out to power consumers. Presumably they were generating to some other undisclosed contract price. Yet the AEMO RRP was drastically lowered across all states on the 22 July. See the Table “Average Daily Prices – Current Month”. Time to talk about re-nationalizing the coal fired generators at least. NemWatch for current generation. For large screen shot.

NIWA “dryer than average” New Zealand rain Outlook looks under threat – again

The NZ climate prediction maestros look to have dropped another dodgy one – to my untrained eye anyway.
Stuff says – Live: Christchurch declares state of emergency, orders evacuation as floods rise – and the NZ Herald with hopeless front page – Winter storm chaos: What you need to know
If I read the COLA forecast right – more rain this coming week. Not long since – NIWA 3 month Outlook destroyed inside two weeks 11 Mar 2017

No Australian weather site has recorded a daily max of 50° this century

I had Lance staying overnight and this subject came up – me opining after watching too much ABC TV news for years – that some site must have hit the 50° in the last several years. When Lance pointed out on BoM pages that the last 50° plus was in 1998 – I felt somewhat conned. We searched Google and sure enough we found this article “The proof Australia is getting hotter” – which includes this rather specific claim – Quote “While Western Australia had a cooler than average year in 2016, some parts of the giant state did hit 50 degrees, Australia’s observation of such heat a first in two decades.” Well if 50 was hit it was not noticed in official BoM daily data. Screen saved. What an amazing lie – “fake news” indeed. Part of my conning was BoM news early in 2013 of the extension of temperature scales up into the 50’s. Oddly this neat animated map from Feb 2016 does not extend to cool temperatures around -10 that are quite common this winter. What other plus 50’s (122F) are there that the BoM should recognize?

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.

Minister Frydenberg oddly misleading about Queensland wholesale power prices

Australian Energy Minister Josh Frydenberg states “In Queensland, over the first five months of this year, electricity consumers paid the highest wholesale prices in the NEM, 30 per cent above the average.”
That statement may be technically true but the chart of AEMO daily prices shows it to be misleading. In fact Qld prices were only notably higher than other States during two price spikes in January and February – for the more than four months post 24 Feb 2017 Qld prices have been subdued compared to the other four States in the Eastern Grid.
Starting the chart on 1st Sep 2016 to clear the price spikes relating to the closure of the Port Augusta coal fired generators – NemWatch – AEMO Price-Demand charts – AEMO Raw daily RRP wholesale price data – NEM Dispatch Overview – Larger version chart

Questions about the Tesla grid scale battery proposed at Jamestown South Australia

We have all seen the news blitz – SA Government announces Tesla will build 100MW giant battery as part of its energy security plan 7 Jul 2017 – Elon Musk says the battery has a capacity of 129MWhrs – I am hoping for answers to the following questions – and there may well be others.
A – How many MWhrs will the wind-farm have to generate and be paid for to store 129MWhrs in the battery?
This should reveal the percentage efficiency for the charging of the battery calculated as 129/MWhrs required to charge battery. Another forum Q! & A re battery charging losses.
B – We heard that the battery requires cooling so what is the heat loss expressed in MWhrs over time when the battery is charging? and discharging? Those heat losses must be known.
C – When fully charged and assuming no load – what is the percentage electricity leakage loss per hour for the battery standing idle waiting to work?
D – When the battery is required to use the stored electricity to say meet a peak power shortage in Adelaide – where most demand is – What percentage of the electricity will be lost in discharge and in the 216kms of transmission to Adelaide including losses in voltage stepups and stepdowns normally a part of electricity transmission.
E – I hope the cost is fully revealed in time so the great success can be comprehensively explained to the masses.
F – It would be informative to see an analysis of the effectiveness of the “Salisbury battery storage trial” where at least 100 batteries have been installed at Adelaide homes as at the end of 2016.

I am wondering if in all the process from A to D – would even 50% of the energy input at A ever make it through the battery to consumers in Adelaide?

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

Primarily exposing faulty methodologies behind global temperature trend compilations