At at cost of $50 million, the Lithium Ion battery farm can store enough energy to power about 30,000 homes for a
little over an hour. To date, the longest it's ever supplied power to the grid is 38 minutes.
I'm not an astronomer, but I'm almost certain most nights are longer than an hour ... even in Australia.
P.S. ... 30,000 homes represents a population of 75,000 people ... 25,000 fewer than America's 311th largest town, Vacaville, at 100,000 persons. How much should the good citizens of Vacaville be asked to pay for a whole hour of electricity after the sun goes down?
I guess not reading anything is a perfect way to maintain one's blissful state of ignorance.
How Tesla's big battery is bringing Australia’s gas cartel to heel
On Sunday 14 January something very unusual happened.
The Australian Energy Market Operator called – as it often does – for generators in
South Australia to provide a modest amount of network services known as FCAS, or frequency control and ancillary services.
This time, though, the market price did not go into orbit and the credit must go to the
newly installed Tesla big battery and the neighbouring Hornsdale windfarm.
The call for 35MW of FCAS – usually made when there is
planned maintenance or a system fault on the interconnector between Victoria and South Australia – has become a running joke in the electricity market, and a costly one for consumers.
The big gas generators – even though they have 10 times more capacity than is required – have systematically rorted the situation, sometimes charging up to $7m a day for a service that normally comes at one-tenth of the price.
(You can read reports on how they do it
here,
here and
here, and for a more detailed explanation at the bottom of this story.)
The difference in January was that there is a new player in the market: Tesla. The company’s
big battery, officially known as the Hornsdale Power Reserve, bid into the market to ensure that prices stayed reasonable, as
predicted last year.
Rather than jumping up to prices of around $11,500 and $14,000/MW, the bidding of the
Tesla big battery – and, in a major new development, the adjoining Hornsdale windfarm – helped (after an initial spike) to keep them at around $270/MW.
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This saved several million dollars in FCAS charges, which are paid by other generators and
big energyusers, in a single day