I’ve been working on a wildfire defense system for my property on Maui for a while now–I keep saying 18 months, but I’ve been saying that for quite a while. Cameras, sprinklers, automated response, the whole thing. And if you’ve watched any of the earlier videos, you know I was pretty focused on the fire side of it — detection, automation, getting water on the right places at the right time.
I’ve changed direction. Not abandoned the project–if anything I’m stepping up the pace–I changed the order of operations. And I want to explain why, because I think it actually makes the whole thing better.
The Sprinklers Are the Easy Part
Here’s what I figured out: the actual fire suppression hardware — the sprinklers, the pump, the plumbing — that’s not the interesting problem. It’s not trivial, but it’s a solved problem. I’m going to have a contractor install that. A licensed plumber and an irrigation specialist can handle it. I don’t need to be the one doing it, and frankly, for something that might need to save my house, I’d rather have a professional do the installation anyway.
What I kept circling back to was a different problem. One that doesn’t have a good off-the-shelf solution. One that’s actually harder to solve and has implications far beyond just fire mitigation.
The Real Problem: What Happens When the Grid Goes Down
Here’s the thing about wildfires and power outages — they happen at the same time. Fires take out power lines. High winds that drive fires also knock out power. And in a major emergency, utilities shut down power (PSPS Shutdowns) proactively to prevent their equipment from starting more fires. And to preclude blocking evacuation with downed live wires or injuring first responders.
So the moment a wildfire gets close to your property, there’s a very good chance your grid power is already gone. And if your fire mitigation system depends on grid power — even partially — it’s dead exactly when you need it most. The pump won’t run. The automation won’t fire. The cameras go dark. Everything you built becomes useless at the worst possible moment. That’s not a fire system problem. That’s an energy problem. And solving the energy problem is what I need to focus on first.
Energy Management Is the Base Layer
Once I started thinking about it this way, everything reordered itself. The energy management system isn’t a nice-to-have add-on to the fire system. It’s the foundation everything else sits on. Without reliable off-grid power management — a system that can keep critical loads running through a grid outage, intelligently manage what runs when, and do it all automatically without me being home — the fire system is just expensive plumbing.
With it, everything changes. The pump has power. The cameras have power. The automation logic has power. The system can actually do what it’s supposed to do when the grid is gone and the fire is coming. And here’s the part that surprised me when I started digging in: The energy management system is genuinely the harder software problem. Getting a sprinkler to turn on when a sensor trips is straightforward automation. Building a system that intelligently manages solar production, battery reserves, grid interaction, occupancy, and load prioritization — in real time, autonomously, without anyone home — that’s a legitimately complex problem. And it’s one that doesn’t have a good commercial solution at any reasonable price point.
The Other Thing I Realized
An energy management system that works well enough to keep a fire mitigation system running through a grid outage is also just… a really useful energy management system. For everyone. Not just people in wildfire zone.
Most homes waste a significant amount of energy running systems for nobody. Heating water nobody is about to use. Conditioning air in empty rooms. Running equipment on fixed schedules regardless of whether anyone is home, whether the sun is shining, or whether the grid is cheap or expensive right now.
A system smart enough to keep a fire pump running through a three-day grid outage is also smart enough to cut your energy bill by 30-40% under normal conditions. Those are the same capabilities. You build it once and it does both jobs. So the audience for this project just got a lot bigger. I’m not building something just for people who live near wildfires. I’m building something for anyone who has solar, or wants to get the most out of their energy system, or just wants their house to stop wasting power when nobody’s home. The fire mitigation layer sits on top of that. It’s an add-on for people who need it. But the base system is useful for everyone.
What This Means for the Project
I’m concentrating on the energy management system first. Getting it right, getting it documented, getting it to the point where someone with moderate technical skills can build their own version with help from an AI. That’s the deliverable I’m working toward.
The fire mitigation components — the sprinkler installation, the camera detection, the fire-specific automations — those come next, built on top of the EMS foundation. Not the other way around. It’s a better order. The foundation is more useful to more people. And once the foundation is solid, the fire system becomes a much more straightforward project to build on top of it.
That’s the pivot. I think it’s the right call. Watch the video if you want the full version — I go into a bit more detail there. And if you’re interested in building any of this for your own property, stick around. The good stuff is coming.
— Bil