Supply backup power in case of an electrical grid failure until complete power restoration. Save time and money by eliminating downtime.
Grid Down Redoubtis an Industry Leading, Advanced, Safe, Easy to Install, Grid-Tied & Off-Grid Capable, Lightning & EMP Protected Energy Storage System (ESS)
Looking for a larger or smaller system? See all of our systems HERE
REDOUBT Max 85.8 kWh (2×6)
● Industry Leading Energy Storage System with a 85.8 kWh Battery Storage Capacity – Built by Lion Energy.
– 2x Hybrid Inverter (36kW Solar/DC Input, 24kW AC Output. 400 Amp Total Grid Passthrough)
– 6x 14.3 kWh LiFePO4 Batteries (85.8 kWh Total Capacity)
● Complete EMP Shield Electromagnetic Pulse and Lightning Protection for Your Entire Home and the Grid Down Redoubt System. EMP Shields Included are:
– 3x AC EMP Shields (Protects Home + Redoubt)
– 4x DC EMP Shields (Protects 4x PV String Inputs)
● EMP Shield Protection is Listed by the Department of Homeland Security in their EMP Resilience Report.
● 10 Industry Leading Warranty with 100% Guaranteed Lightning Protection Backed by a $25,000 Insurance Policy.
● Free Shipping (Within the Continental US). Ships Within 7-18 Business Days.
Original price was: $62,831.$54,998Current price is: $54,998.
Payment Plans With 0% Interest Available at Checkout
Looking for a larger or smaller system? See all of our systems HERE
The Grid Down Redoubt is one of the worlds most advanced, modular, easy to install and comprehensive energy storage systems on the market. Expandable from 14kWh to 172 kWh, our new Redoubt bundle takes energy storage a step further by including EMP Shields advanced EMP and lightning protection. The Grid Down Redoubt is on average 20%+ more affordable than most other comparable energy storage systems. With a focus on safety, our Grid Down Redoubt provides industry leading safety certification and compliance. Our systems feature more storage capacity and inverter capability than most other energy storage systems on the market in this class. For anyone looking to purchase an energy storage system, we challenge you to shop around. After you do your research you will find that the Grid Down Redoubt's features, warranty, safety, protection, and price make it one of the best energy storage systems in the industry.
Key Features
◼︎ Expandable From 14.3 kWh to 172 kWh
◼︎ 12kW Inverter /18kW Solar
◼︎ Lithium Iron Phosphate Batteries - Safest Chemistry
◼︎ Stackable/Modular
◼︎ Indoor/Outdoor Rated
◼︎ Mobile App Integration
◼︎ Production & Consumption Management Functionality
◼︎ Pre-Commissioned Prior to Delivery
◼︎ Easy to Install
◼︎ Provides On & Off Grid Functionality
◼︎ Complete EMP Shield Lightning and EMP Protection Included
◼︎ 10-year Warranty/100% Lightning Guarantee with $25K Insurance
◼︎ Advanced Monitoring & Control Capabilities
◼︎ In-House Creation & Management of Software & Firmware
◼︎ Partner & Customer Support Team
◼︎ 100% Of Product Testing Is US Based
◼︎ US Based Servers for App Data Storage
◼︎ Generator Compatibility
◼︎ Free Shipping on Every System
◼︎ 0% Interest Payment Plans Available at Checkout
Need Help? We've Got You Covered
Use the tools below or you can contact us HERE
Our Grid Down Redoubt Selection Tool will help you calculate the total amount of energy your home could potentially use (called the load) and then tell you which Grid Down Redoubt system is best for you.
One question we get asked a lot is: If I have solar panels, how long will it take to charge my Redoubt system? With our new calculator, you can estimate just how long it will take to charge your system using solar panels.
Our Grid Down Redoubt Battery Life Calculator is an advanced tool that will tell you how long your Redoubt battery may last based on the amount of energy you select to be used per day.
I have the Grid Down Redoubt installed and I love it!
Grid Down has teamed up with Lion Energy (which I have owned their Sanctuary system for 2 years now and love) To make what I think is the best Energy Storage system even better! They are making it Lightning and EMP protected and easy for the DIYer to install.
Al Lumnah from Lumnah Acres During Installation of his 81kWH Grid Down Redoubt Off-Grid Solar Energy Storage System Bundle.
Watch Lumnah Acres Install the Grid Down Redoubt: HERE
I've worked with alternative power systems for 20+ years. It's very gratifying to see industry leaders EMP Shield and Grid Down combine there products to provide the highest quality back-up power.
The reputation of these two companies, backed up by their warranties, is just what this industry needs.
John "J.R." Moore
The John Moore Show
Republic Broadcasting Network
Many people think a generator is all they need for a disruption in electrical service. They're wrong. You need two additional things: A way to store the excess electricity and EMP protection.
Grid Down Redoubt is the solution. And it includes EMP Shield, which is the most trusted name in EMP protection.
Glen Tate
Author, 299 Days
Prepping 2.0
Finally a company does it right! An all in one home battery system that will allow you to sell power back to the grid and use it to power the home off grid if the power goes out! I also love that it has an outstanding 25 year warranty. The icing on the cake is that it is also hardened against all types of Electromagnetic Pulses. I give this system 5 stars and can’t wait to get one installed in my home!
JJ Johnson
Reality Survival
We've searched for years to find the right energy storage system for our home. It must meet our daily needs AND take care of us when the grid goes down. Grid Down Redoubt is exactly what we have been looking for. We will rest easy knowing that we have the power to take care of the ones we love. The EMP protection (upstream and downstream), ease of use, safety rating, and the 25-year warranty on the entire system are what sold us on Redoubt. That gives us peace of mind!
From Last Line of Defense
From Provident Prepper
From Lumah Acres
Advanced Metrics
Monitor current and past energy usage, turn features and/or products on and off at the touch of a button, and set up custom controls to tailor your Grid Down Redoubt to your needs.
Monitor Current and Past Energy Consumption
See what energy is coming in and going out from both your solar system and Grid Down Redoubt. Look at past energy data by the hour, day, week or month so your system can be more efficient. Make individualized adjustments to create the best experience for yourself.
Set up Personalized Controls
Connect your devices and control the functionality of your Grid Down Redoubt from a distance using Bluetooth Technology. Remotely turn on or off your batteries so you’re not wasting any energy.
Automate & Save
For your Grid Down Redoubt, use the app to automate recharge times to only draw energy from the grid during off-peak hours. Create specific intervals to recharge you Sanctuary batteries, whenever is best for you.
Control Your System
Be ready for a home blackout or a big storm, winterize your RV, or turn your solar generator off or on.
Redoubt Benefits
Load
Management
Accumulate energy when the demand is low and discharge stored energy during peak times, saving money.
Backup Power/
UPS
Renewable Energy
Integration
Open the door to inexpensive electricity continuously available to on-grid, off-grid, and hybrid systems.
Power System
Recovery Capability
Based on battery storage, a Redoubt can restart after a total shutdown without using external electricity networks. Recover in the shortest time possible.
Energy
Time-Shift
In areas where electricity prices fluctuate, energy is purchased at a low price during off-peak periods and sold or used when the price increases.
Frequency
Control
Immediately react to power interruptions and stabilize the grid. It can also ensure voltage stability, maintaining its level within the specified range.
☀️ PV Input
| Max PV Input | 18kW |
| MPPT Input Voltage | 120-500V |
| Max Input Current | 16A*4 |
| Max Short Circuit Current | 22A |
| AC Solar Max | 12kW |
🔌 AC Output (On Grid)
| Nominal Output Power | 12kVA |
| Max Power Apparent Output | 50A |
| Output Voltage Ranger | 110-120/220-240V Split-Phase |
| Grid Frequency (Optional) | 60Hz |
| Max Grid Passthrough | 200A |
⚡️ Battery
| Battery Voltage Range | 40V~60V |
| Max Charging Current | 190A |
| Max Discharging Current | 190A |
📐 System
| Ingress Protection | Type 3R, IP65 |
| Dimensions | 33.6" x 18.50" x 10.08" |
| Weight | 110lbs |
| Max Efficiency | 97.8% |
| PV DC AFCI | Type 1 |
| PVRSS | TIGO RSS Transmitters (RS2) |
Basic System Architecture
This figure depicts the basic application of the Grid Down Redoubt System. Power is fed into the system from the power grid, solar power array or generator to have a complete running system.
Power in the Palm of Your Hand
Redoubt Charging Options
Off-Grid
Off-Grid is when you are getting power from an alternate energy source like solar panels, generator, wind power, or hydro power. This alternate energy source can be used to charge the Redoubt energy storage system and power your home directly.
Grid-Tied
Grid-Tied is when you are getting power directly from the power grid. With the Grid Down Redoubt, the electrical grid can be used to charge the Redoubt energy storage system and also power your home directly.
Combination
A combination system is when you are connected to the grid and also getting power from an alternate energy source. With a combination system, you can charge the redoubt from both power sources and also power your home from both power sources.
Looking for EMP Surge Protection?
EMP Protection
All Phases an EMP (E1, E2, & E3)
Solar Flares
Up to 228,000 Amps
Lightning Protection
100% Lightning Guarantee Backed By a $25,000 Insurance Policy
Featured In
Industry Leading 10 Year Warranty
If it fails at anytime during the 10 year limited lifetime warranty, we replace it for $50. No questions asked!
Backed by $25,000 of Insurance
If the device doesn't protect your electronics, we will cover the damage
Surpasses All Military EMP Testing Standards
- MIL-STD-188-125-1
- MIL-STD-464C
- MIL-STD-461-G
- RS-105 (90,000 Volts)
Listed by the Department of Homeland Security
EMP Shield Has Set New Standards in EMP Protection and is Listed by Homeland Security in their EMP Resilience Report
How Has EMP Shield Been Tested?
Isn't a nuclear explosion required to create an EMP?
The threat of an EMP is the large amount of electricity that is induced into conductors that generate heat and can be destroyed. There are only a few testing facilities in the world capable of producing the same amount of electricity that an EMP produces.
EMP Shield has been rigorously tested at the Keystone compliance facility which Keystone Compliance which has developed a reputation of being one of the most respected military test labs in the country. Our testing and evaluations conducted at the facility were documented in depth to show the true ability and durability of the EMP Shield.
EMP Shield has been designed to exceed the US Military requirements for protection against a high-altitude nuclear detonation that results in an electromagnetic pulse. This family of products has been tested to verify compliance with the following Military Standards:
MIL-STD-461-RS105 Transient electromagnetic pulse of up to 50 kV/m, double exponential wave with a rise time in the nanosecond range, that is applied to the equipment under test (EUT) at least 5 times. We tested at 50 kV/m and also 90 kV/m (80% above required testing voltage).
MIL-STD-188-125-1 High Altitude EMP
MIL-STD-461G Control of Electromagnetic Interference
MIL-STD-461-CS-115 The purpose of CS115 is to test an electronic or electrical system to withstand signals coupled onto the test unit’s associated cabling. The test unit will be subjected to rise and fall times, pulse width, and amplitude as specified on Figure CS115-1 at a 30 Hz rate for one minute;
MIL-STD-461-CS116 applies to 10 kHz to 100 MHz for all interconnecting cables, including power cables, and individual high side power leads;
MIL-STD-461 CS117 apples to all safety-critical equipment interconnecting cables and non-safety critical equipment with interconnecting cables/electrical interfaces that are part of or connected to equipment performing safety critical functions. The goal is to test the unit’s ability to withstand lightning transients coupled onto the test unit’s associated cables and power leads;
MIL-STD-464C Electromagnetic Environmental Effects Requirements for Systems.
Our test results show that we begin shunting the over-voltage condition in less than 1 nanosecond, and our units are designed to shunt over 100,000 Amps per phase. Our devices are scalable to any size.
*Keystone Compliance does not personally endorse any products
Have a Question?
Contact us via our Contact Us Page or call: 316-368-3370 (MON-FRI / 0800-1700 CST)
