Meet Astro: Sacramento's Four-Legged Power Guardian

Sacramento’s electrical grid just got a very good boy on the payroll.

SMUD has deployed Astro, a Swiss-engineered robotic dog, to patrol the utility’s 270 substations and sniff out electrical problems before they spiral into blackouts. This isn’t a cute tech novelty—it’s a serious attempt to prevent the kind of outages that leave thousands in the dark, and Astro is already proving his worth by detecting issues invisible to human inspectors.

Think of Astro as a four-legged diagnostic machine built for terrain that would exhaust—or confuse—conventional drones. He navigates rocks, gravel, mud, snow, stairs, and gridded surfaces with the agility of an actual dog, but equipped with sensors that would make most military surveillance hardware jealous. A 4K camera, infrared thermal imaging, a partial discharge sensor, and 16 microphones that detect acoustic anomalies in electrical equipment—all working together to catch failing transformers, overheating connections, and other problems before they cascade into city-wide power failures.

Edward Anguiano, SMUD’s robot handler, travels everywhere with Astro, programming custom inspection routes for each substation. Because every facility is different, Astro needs a precise map of where to go and what to look for. The handler’s job title alone captures the absurdist charm of this moment in Sacramento: we’ve reached an era where utility companies employ people whose primary responsibility is walking a robot dog through industrial parks and taking it seriously.

The real story isn’t the novelty—it’s the economics. These robotic recruits cost roughly $300,000 each, and SMUD is committing to a three-year pilot program with plans to expand the team to include two more robots named Elroy and Judy (yes, they’re staying with the Jetsons theme). That’s a massive capital investment justified by a simple equation: if Astro catches one major equipment failure before it fails, he pays for himself many times over. Preventing a single widespread blackout saves the utility millions in outage costs and protects Sacramento residents from the cascading chaos that follows when the grid goes dark.

Astro has already detected potential problems that prevented outages. He’s not just a proof-of-concept—he’s delivering results. Sacramento is now home to the first robotic dog working for a utility company anywhere in California, which means residents in a city of more than 600,000 customers have just moved into a future where their power reliability depends partly on a machine that walks on four legs and listens for electrical trouble. It’s the kind of tech story that feels too strange to be real, yet SMUD’s director of substations Eric Poff is already talking about scaling up. The question isn’t whether more utilities will follow—it’s how soon.