If this were a movie, hardware and software developer David Rowe would look like a sitting duck for teen shenanigans — I mean, we don’t know the dude, but we’re pretty sure he’s a dweeby dad (or as close as you can get in Australia). The man describes himself as “kind of a power geek” — and he is talking about home energy use, not imperialism. But in fact, Rowe’s power geekiness has now translated into powerful hardass parenting: He busted up his daughter’s New Year’s bash from 500 miles away, thanks to his home energy monitoring device.

Over New Year’s, Rowe was traveling in the Melbourne area, an eight-and-a-half-hour drive from home. His 16-year-old daughter was staying with friends. The vacant house piqued Rowe’s energy geek curiosity: How would it perform with no one in it? So he fired up his energy-monitoring device and took a look.

Here’s what happened next, according to Matt Hickman, of Mother Nature Network:

So Rowe opened up the Fluksometer app only to make a shocking discovery: his home’s electricity consumption was off the charts and it was evident that someone was there and running the air conditioner. At around 7 p.m., the electricity usage jumped even further as if someone had turned on the television and all of the lights.

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Apparently Rowe has not seen any teenage-bash movie, ever, and needed some “savvy teenagers” to tell him what was going on: kegs, punch, red cups, and boys neither he nor his daughter had ever met dive-bombing into his pool. (We’ll assume he has one. Who throws a parents-are-away party if they don’t have a pool?) He called his daughter, who claimed she wasn’t at home but who in reality started freaking out.

She did have a clever solution: She unplugged the fridge to try and trick the energy monitoring device into going back down. But dad still knew something was up: Fridges cycle on and off, and the energy pattern didn’t hold. You can check out the graph here — the drop at the beginning tracks to dad’s call home; the plateau is the frantic clean-up with the fridge off; the peaks and valleys return after the fridge is plugged back in and the final escape completed.

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In the end, Rowe’s daughter had to confess, admitting that the vast power usage came from a truly hunormous number of partiers: “I was the last one out and could see a continuous line of teenagers stretched up the street over three blocks.”

Note to self: Do not try and out-geek your energy geek parents. They’re sneaky, and they’ll catch you!