Musk says its 50 per cent complete

The lithium-ion battery pack is already 50 per cent complete, Tesla CEO Elon Musk revealed at last Friday's Powerpack event at Hornsdale Windfarm.
The lithium-ion battery pack is already 50 per cent complete, Tesla CEO Elon Musk revealed at last Friday's Powerpack event at Hornsdale Windfarm.

Hundreds of Tesla enthusiasts from across the country made their way to Hornsdale Windfarm last Friday night to see billionaire Elon Musk speak at his Powerpack event.

Details of the event were kept tightly under wraps in the lead up to the event at the site of the lithium-ion battery, however they became clear once Premier Jay Weatherill took to the stage to introduce the American entrepreneur.

Friday marked the one-year anniversary of the state wide blackout which plunged South Australia into darkness, and would eventually lead to the agreement between the state government and Tesla to construct the battery. 

"Tonight we are here celebrating the progress that's been made,” Mr Weatherill said.

"There were lots of people that were making jokes about South Australia and making fun of our leadership in renewable energy. Well today they're laughing out of the other side of their face."

The interconnection agreement was approved by the Australian Energy Market Operator on Friday and promptly signed by key stakeholder Electranet, triggering the “100 days or it is free” promise made by Mr Musk back in July.

Already the battery is 50 per cent completed with works having been started, meaning the energy storage company is well on track to meet its December 1 deadline.

At the announcement of the battery back in July, the Premier said the battery would be installed within 100 days of the agreement being signed, which was a slightly different take on Mr Musk’s Twitter offer of installing the battery within 100 days of the contract with the state government being signed.

Showing the power the battery had while it was partially completed, the entirety of Friday nights event was powered by energy stored by the pack.

Mr Musk said it was amazing how far the battery had come in just two months, joking that a kitchen could not be built in that time frame.

“It was only a couple of months ago we made the annoucnement of the deal, a couple of months ago none of this was here,” he said.

Mr Musk predicted that it would cost him $50 million if he did not meet the deadline.