Energy Empire
Energy Empire
Energy Empire
Ask Jigar: Is a $20,000 used EV the cheapest home battery you can buy?
8 minutes Posted Aug 20, 2026 at 8:44 am.
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Show notes

A used EV costs $200 a kilowatt hour. A Powerwall costs $900.

In this episode:

  • Unsubsidized rooftop solar at $2,100 a kilowatt, and why Australia does it for half that
  • 470,000 megawatts of data center requests on a grid with a 91,000 megawatt peak: "It's crazy town"
  • Why buying a $20,000 used EV means "you're getting the car for free just by buying the battery"
  • Everything else on the grid just makes steam. Solar doesn't.


Send in your question, and if Jigar answers it on the show, you get an Energy Empire hat: https://octopusenergy.com/ask-jigar