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Thursday, December 19, 2019

A Cloud Drifting Over the Unterne Solar Plant Knocked Out Power in an Australian city for up to 10 hours

SUMMARY:
Ever hear of a fossil fueled
electricity power plant 
that produced no power
at night ?

Of course not.

How about one that failed
from a cloud drifting over
the power station ?

Of course not.

Well, welcome to the 
wacky world of expensive,
intermittent solar power !

An Alice Springs,
Australia blackout 
affected about
12,000 customers, 
for between 
30 minutes 
and 10 hours.

Not from a hurricane.

Not from a tornado.

Not from heavy winds.

Caused by 
a big cloud 
drifting above 
an Australian
$50 million solar 
power station !








DETAILS:
All back up systems failed,
including an $8 million battery.

An independent report 
blamed operator
incompetence for allowing 
clouds to affect the solar 
energy supply.

So that's the 
official explanation.

New technology
= new problems.


A report from 
a consultancy,
paid for by the market 
regulator, tried to explain
the “system black” event 
that hit Alice Springs 
in October 2019.

The report was by the
consultancy Entura,
paid for by the Utilities 
Commission.

The Northern Territory Labor 
government read their report,
and fired the territory’s 
two most senior energy chiefs.

The two men fired were 
Tim Duignan, the CEO 
of Territory Generation, 
and Michael Thompson, 
the head of network operator 
and systems control company 
Power and Water Corporation.



This seemed to be a problem 
NOT about new technology, 
but of a lack of employee 
training and general 
incompetence.

Entura found that staff managing 
the system did not anticipate 
the approaching cloud cover, 
and did not know what to do 
when output from the Uterne 
solar farm declined, along with
output from rooftop solar panels 
on area buildings and homes,
which are linked to the electric
grid.

Thermal 
generators 
failed, 
because they 
had not been 
properly 
maintained, 
and the staff 
had no idea 
how to re-start 
the solar power, 
because procedures 
had not been updated 
since installation 
of a big battery. 

Finally, there was insufficient 
spinning reserve power from 
back-up natural gas turbines, 
and the system was unstable.

Read more here: