If you’re building an off-grid or backup power system, you’ve probably already thought about what happens when the grid goes down. What most people don’t think about is what happens when a surge event, whether that’s lightning, a solar flare, or an actual EMP, takes out the system they built to replace the grid. That’s the problem the Grid Down Redoubt was designed to solve, and it’s why EMP Shield is part of it.
The Partnership
Grid Down and EMP Shield have been working together for a while now, but most people don’t know it. That changes with the Redoubt. Grid Down, a company focused on resilient energy storage, and EMP Shield joined forces to build something that neither company could offer alone, an energy storage system with military grade EMP and surge protection built in from the start, not bolted on as an afterthought. The system is built on Lion Energy’s Sanctuary battery platform, one of the most trusted names in residential energy storage, and every Redoubt ships with EMP Shield protection already integrated into the system.
What the Redoubt Actually Is
The Redoubt is a modular battery based energy storage system available in configurations ranging from 14.3 kWh all the way up to 171 kWh, with the ability to combine systems for even more storage capacity. It can run in grid tied mode, fully off grid mode, or a combination of both, which means it works whether you’re looking for backup power during outages or complete energy independence. It pairs with solar panels, generators, wind power, or hydro power to charge the battery bank and power your home directly.
Why These Two Companies Belong Together
Grid Down and EMP Shield share more than a product. They share a philosophy. Grid Down was built on the belief that energy independence shouldn’t come at an exorbitant price and that preparedness is a long term investment in self-reliance, not a luxury for the few. EMP Shield was built on the same foundation, that protecting what you’ve worked hard to build shouldn’t be complicated or left to chance. Both companies are deeply rooted in community values and a commitment to quality that doesn’t cut corners. When two companies with that kind of alignment decide to build something together, the result isn’t just a better product. It’s a more complete answer to a problem that most of the industry is still ignoring.
The Warranty
This is where things get serious. The Lion Energy Sanctuary components carry an industry leading warranty of up to 25 years on Redoubt Legacy systems. The Grid Down Max includes a 10 year warranty expandable to 25 years. On top of that, every Redoubt comes with a 10 year EMP Shield warranty that includes 100% guaranteed lightning protection backed by a $25,000 insurance policy. That’s not a vague promise. That’s a documented financial commitment that your system is protected against lightning damage. With these warranties you have coverage that most energy storage systems on the market simply don’t offer.
Why This Matters
A solar or battery system that isn’t protected from surges has a fundamental vulnerability that most people don’t discover until it’s too late. The same event that takes down the grid, a major lightning storm, a geomagnetic disturbance, or an EMP, can just as easily take out an unprotected backup system. At that point you’ve spent significant money on energy independence that isn’t independent at all when you need it most. The Redoubt closes that gap by making sure the protection is part of the system from day one rather than something you have to figure out separately after the fact.
If you’re serious about energy independence and want a system that’s built to survive the kind of events that make energy independence necessary in the first place, the Grid Down Redoubt is worth a serious look. You can find full system specs, sizing tools, and pricing at the Grid Down website, and if you have questions about the EMP Shield components specifically, give us a call. We’re happy to walk you through it.




