Delivered · Late
Cybertruck production late 2021
“The company anticipates that production of the lower-priced Cybertrucks should begin in late 2021 with the …”
goalposts: 2021 → 2022 → late 2022 → 2023 · moved 3×
“Tesla will get the system installed and working 100 days from contract signature or it is free. That serious enough for you?”
What actually happened
Tesla delivered. The 100 MW / 129 MWh Hornsdale Power Reserve in South Australia — then the world's largest lithium-ion battery — was built in roughly 60 days from the grid-connection agreement and officially switched on December 1, 2017, comfortably inside the 100-day bet window. One of Musk's cleanest wins. BBC — Tesla mega-battery in Australia activated ↗
The Progression
Mar 10, 2017
The promise: “Tesla will get the system installed and working 100 days from contract signature or it is free. That serious enough for you?” · Elon Musk on Twitter, March 10 2017, replying to Atlassian's Mike Cannon-Brookes (verified via publish.x.com oEmbed) ↗
Dec 1, 2017
Delivered — on time. Tesla delivered. The 100 MW / 129 MWh Hornsdale Power Reserve in South Australia — then the world's largest lithium-ion battery — was built in roughly 60 days from the grid-connection agreement and officially switched on December 1, 2017, comfortably inside the 100-day bet window. One of Musk's cleanest wins. BBC — Tesla mega-battery in Australia activated ↗
Today · Jun 12, 2026
Status: Delivered · on time. It happened.
The famous '100 days or it is free' Twitter bet of March 2017 with Atlassian co-founder Mike Cannon-Brookes committed Tesla to building a 100 MW grid battery for blackout-plagued South Australia. The Hornsdale Power Reserve went live December 1, 2017, within the window, and went on to slash grid-stabilization costs — a rare unambiguous early delivery among Musk's public promises.
Receipts
LAST CHECKED 2026-06-12More from the feed
Delivered · Late
Missed
Delivered · Late
Cybertruck volume production in 2022
“If we get lucky, we'll be able to do a few deliveries toward the end of this year, but I expect volume prod…”
goalposts: 2022 → 2023 → late 2023 · moved 2×
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