I used to worship efficiency. For years as a control systems engineer, I sweated over fractions of a percent, shaving seconds off processes and optimising production lines.
Now I look around and realise: efficiency is dead. Killed by cheap solar and ever-cheaper batteries.


Last week, my Powerwall 2 turned seven.

A fancy burger joint near the SolarQuotes office opened six months ago. It was small and stylish. And just closed down. I wasn’t surprised.
Since the early days of rooftop solar, many Australian academics & commentators have
There’s a new myth floating around: if your energy retailer gives you a free 3-hour energy window in the middle of the day, you don’t need solar panels. Just get a big battery, charge it for free during the magic window, and run your house on battery power 21 hours per day.
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