Post by UnumPost by Paul AubrinWind power is carbon free, and the wind is free (we are told). That's the
reason why Australia two decades ago decided to subsidise the wind
industry. Politicians then promised that, as the wind is free,
electricity, which was then cheap, would be even cheaper.
Yesterday and today too, in South Australia, prices reached A$14,000/MWh
between midday and 6pm (source AEMO), and A$1074MWh averaged on the whole
day.
The Aus national energy market has a cutoff price so that robot traders
wont screw up the market with some "panic attack" bids that might all
take place within seconds from a large number of robots all in lock step.
So under the energy rules the AEMO prepares a set of prices that apply
when the market is suspended during such "panic attacks". Those
emergency prices are by law the average of the preceding month for that
particular state. These "suspension prices" are published separately.
So when the "price" market droids are watching goes to some impossibly high
value just remember -- they are not prices that are actually charged to anyone
anytime. The "market cutoff price" is not a real price.
In any case the prices actually charged to customers are usually heavily
discounted from the market price.
So what the "average recommended price" is including these dummy "trading
is actually suspended, fool" prices is irrelevant and maybe indicates
someone somewhere doesn't quite understand what automated trading and
markets are all about post computers.
Sorry if this upsets any fakesperts.
Post by Unumhttp://www.abc.net.au/news/2017-12-18/household-electricity-looks-set-to-get-cheaper-from-mid-2018/9266914
"Prices rose sharply this year by almost 11 per cent on a national basis as
consumers felt the impact of Hazelwood and Northern coal-fired plants retiring
and the lack of replacement investment, combined with high gas prices," Mr
Pierce said.
"But we expect these price rises will be reversed over the next two years as
wind and solar generation enters the system."
--
In a study recently published in Environmental Research Letters, we explored
the changing characteristics of the global food system. Using annual staple
food production and trade data from 1992 to 2009, we showed that the global
system has increased in complexity over time. In particular, the number of
wheat and rice trade connections has doubled, and trade of wheat and rice
has increased by 42% and 90%, respectively. We also found that the global
food system is relatively homogeneous; 85% of countries have low or marginal
food self-sufficiency. These findings are quite important, as highly
interconnected and homogenous systems (like the Internet and global
financial systems) are thought to have increased susceptibility to
system-wide, cascade-like disruptions.
-- Michael Puma, Mar 2015
<http://www.giss.nasa.gov/research/briefs/puma_03/>
Food security is defined by the Food and Agriculture Organization as: when
all people, at all times, have physical, social and economic access to
sufficient, safe and nutritious food that meets their dietary needs and food
preferences for an active and healthy life.