So I’ve been building this wildfire defense system for my place on Maui. Cameras, sprinklers, automated response — the whole deal. And if you’ve watched any of the earlier videos you know I was pretty deep into the fire detection side of it. I’ve changed direction. Not scrapping the project — If anything, I stepped up the effort— I just changed what I’m working on first. And I think it actually makes everything better.
Here’s what happened.
I kept running into the same problem every time I thought seriously about the fire system. What happens when the grid goes down? Because here’s the thing — when a wildfire gets close to your property, the power is probably already off. Fires take out lines. High winds knock out power. Utilities shut things down proactively to stop their equipment from starting more fires or injuring first responders. So the moment you need your fire system to work, there’s a real good chance the grid is gone. And if your system depends on grid power — even partially — you’ve got an expensive pile of plumbing that does nothing. But if I recommended a big solar installation–or even upper-medium, the project gets expensive fast.
That’s not a fire problem. That’s an energy management problem. How can people get by with a small solar/battery/inverter system or even just a little battery/inverter “generator”? Well, it turns out they can if the energy is really well managed.
And once I started thinking about it that way, I realized the sprinkler installation itself isn’t actually the hard part. It’s a solved problem. I’m going to have a contractor do it — a plumber and an irrigation specialist who’ve done this a hundred times. For something that might need to save my house, I’d rather have a professional handle the physical installation anyway. My initial design wouldn’t have worked, and my second cut would probably have a massive water hammer that blows the ends off the pipes.
The hard part — the part that doesn’t have a good solution anywhere at a reasonable price — is building a system that manages energy intelligently enough to keep everything running when the grid disappears. Solar, batteries, load management, automation. Getting that right is genuinely complex. And it’s the thing I need to solve first, because without it there’s a very good chance that nothing else works.
So that’s what I’m concentrating on. The energy management system is the foundation. The fire mitigation stuff — the cameras, the detection, the fire-specific automations — all of that gets built on top once the foundation is solid.
The other thing I realized, which honestly surprised me a little: a system sophisticated enough to keep a fire pump running through a three-day grid outage is also just a really useful energy management system for regular life. Same capabilities. It cuts your energy bill, manages your solar, handles outages, runs everything intelligently whether you’re home or not. You might think that must already exist. I sure did. Turns out I was wrong–or at least it’s not available for a reasonable price. And what already exists is too limited–generally it just solves a little subset of the problem or something like smart thermostats that are just not smart enough.
So the audience for this project is suddenly a lot bigger than people who live near wildfires. That’s most homeowners with solar, or people thinking about getting it, or anyone who just wants their house to stop wasting energy running systems for nobody. The fire layer sits on top of that for people who need it. But the base system is useful for everyone.
That’s the pivot. I think it’s the right call. The video goes into a lot more detail if you want the full version. And if you’re interested in building any of this yourself, stick around — that’s exactly what I’m documenting as I go.
— Bill
ExpertAmateur.com