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) that comes with a 25 Year Warranty.
REDOUBT 81 kWh
● Lion Energy Sanctuary – Energy Storage System with a 81 kWh Battery Storage Capacity.
– 2x Hybrid Inverter (24kW Solar/DC Input, 16-28kW AC Output. 180 Amp Grid Passthrough)
– 6x 13.5 kWh LiFePO4 Batteries (81 kWh Total Capacity)
● 25 Year Industry Leading Warranty on the Lion Sanctuary ESS.
● Complete EMP Shield Electromagnetic Pulse and Lightning Protection for Your Entire Home and the Grid Down Redoubt System. EMP Shields Included are:
– 4x DC EMP Shields (Protects 4x Solar Arrays)
– 3x AC EMP Shields (Protects Home + Redoubt)
● EMP Shield Protection is Listed by the Department of Homeland Security in their EMP Resilience Report.
● 10 Year EMP Shield Warranty with 100% Guaranteed Lightning Protection Backed by a $25,000 Insurance Policy.
● Eligible for 30% US Tax Rebate (See Below for Details)*
● Free Shipping (Within the Continental US). Ships Within 7-18 Business Days.
$60,199 $49,899
The Grid Down Redoubt is one of the worlds most advanced, modular, easy to install and comprehensive energy storage systems on the market. Based around the Sanctuary Energy Storage System by Lion Energy, our Redoubt takes energy storage a step further by including advanced EMP and lightning protection. Backed by an industry leading 25 year warranty, 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.
Need Help? We've Got You Covered!
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.
Our Grid Down Redoubt Battery Life Calculator is an incredibly easy to use 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.
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.
Energy Storage Systems
May Qualify for a
30% Tax Credit
With the Inflation Reduction Act, battery storage installed in 2023 can qualify* for the 30% federal tax credit, even if they aren’t attached to solar panels. This may allow you to save thousands and is a key to unlocking affordable, clean energy.
*To qualify, the taxpayer must be the owner of the battery system, must have taxable income, and the system must be installed at the taxpayer’s residence. It can only be claimed on the original installation of the system, and the battery must be as least 3 kilowatt-hours (kWh) in size. Other conditions may apply to your personal situation. Please refer to a tax expert in your area. Source: https://www.energy.gov/eere/solar/homeowners-guide-federal-tax-credit-solar-photovoltaics >
Unlock Savings, Tax Benefits, and Impressive Potential Return on Investment!
Maximize your return on investment with an energy storage system from Grid Down. Our Grid Down energy storage system allows you to leverage the 30% tax credit, dramatically reduce your electrical bill (for grid-tied applications) and potentially increase the value of your home.
Purchasing a Grid Down Redoubt is a strategic investment that can bring significant financial rewards and peace of mind. Grid Down systems provide the security of knowing you’ll always have power when you need it, in any situation.
Solar ROI Calculator
$
| 30% Federal Tax Credit |
$
15,508
|
| Estimated Annual Electricity Savings |
$
4,652
|
| Cost After Incentives & Savings |
$
31,534
|
| Estimated Home Value Increase |
$
72,372
|
Grid Down Redoubt 81 kWh Energy Storage System
$49,899.00
Energy Capacity
13.5 kWh per unit (expandable to 81kWH @ 6X batteries)
Backup Power
8 kW-24kW continuous power (8kW per inverter)
14 kW peak (10 secs)
Size and Weight
74.25 in x 18.5 in x 10 in (L x W x D)
375 lbs
Inverter
DC to AC inverter efficiency: 96%
Round-trip efficiency: 94%
Max solar input: 12 kW
Installation
Integrated inverter and system controller
32°F to 86°F
Water and dust resistant
Certification
Meets North America safety and EMI standards.
Meets the most stringent safety protocols (UL9540), which includes UL1741 for the inverter and UL1973 for the battery (lithium iron phosphate or LiFePO4).
Warranty
25 Year Industry Leading Warranty
10 Year EMP Shield Warranty
100% guaranteed lightning protection backed by a $25,000 insurance policy.
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.
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
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.
Better Capabilities. Better Solution.
| Grid Down Redoubt | Tesla Powerwall 2 | Generac PWRcell | EcoFlow 2 Delta Pro + Smart Panel | Bluetti 2*AC500 +4B 300S | EnPhase Encharge 10 | Sonnen Eco10 | LG Chem RESU10H | |
|---|---|---|---|---|---|---|---|---|
| Placement | Stationary | Stationary | Stationary | Portable | Portable | Stationary | Stationary | Stationary |
| Battery Chemistry | LiFePO4 | Li NMC | Li NMC | LiFePO4 | LiFePO4 | LiFePO4 | LiFePO4 | Li NMC |
| Energy Capacity | 13.5 kWh | 13.5 kWh | 9 kWh | 7.2 kWh | 18.4 kWh | 10.5 kWh | 10 kWh | 9.3 kWh |
| Max Load Continuos | 8 kW | 5 kW | 6.7 kW | 7.2 kW | 5 kW | 3.84 kW | 8 kW | 5 kW |
| Max Peak Load | 14 kW | 7 kW | 9 kW | 7.2 kW | 10 kW | 5.7 kW | 8.5 kW | 7 kW |
| Warranty | 25 Years | 10 Years | 10 Years | 2 Year | 5 Year | 5 Years | 10 Years | 10 Years |
| Round Trip Efficiency | 94% | 90% | 96.5% | N/A | N/A | 89% | 81.6% | N/A |
| UL 9540 Certificate | YES | YES | YES | NO | NO | YES | YES | NO |
| Life Cycle | 6,000 @ 90% | 5,000 @ 96% | 2,649 @ 80% | 3,500 | 3,500 | 4,000 @ 70% | 10,000 @ 90% | 4,000 @ 95% |
| Additional Equipment Required | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Estimated Price Per Wh (*1) | $0.54 | $0.56 | $0.75 | $0.58 | $0.93 | $0.69 | $1.43 | $0.72 |
| EMP Protection | YES | NO | NO | NO | NO | NO | NO | NO |
| Lightning Protection | YES | NO | NO | NO | NO | NO | NO | NO |
*1 "Watt-hour". Estimate pricing is based off largest configuration system build out and includes - product price, average installation cost, average premit cost, and 30% tax credit (if qualified).
Hybrid Inverter Specs
☀️ PV Input
| Max PV Input | 12kW |
| MPPT Input Voltage | 120-500V |
| Max Input Current | 12A*4 |
| Max Short Circuit Current | 15A |
🔌 AC Output (On Grid)
| Rated Output Power | 8kVA |
| Rated Output Current | 33.3A |
| Grid Voltage | 120V/240V Split phase |
| Grid Frequency (Optional) | 60Hz |
| Power Factor Range | -0.8~+0.8 |
⚡️ Battery
| Battery Voltage Range | 40V~60V |
| Max Charging Current | 190A |
| Max Discharging Current | 190A |
📐 System
| Ingress Protection | IP65 |
| Dimensions | 27.9” H x 16.9” W x 8.7” D |
| Weight | 90lbs |
| Max Efficiency | 97.8% |
⚠️ Compliance
|
ULSTD.1741, UL1741 SA, UL1741 SB, CPUC RULE21, SRD-UL- 1741-SA-V1.1, IEEE1547-2003, FCC 15 class-B, UL1699B Arc-Fault Circuit-protection Type 1. |
System Info
🔋 13.5kWh Battery Specs
| Battery Type | Lithium Iron Phosphate |
| Voltage Range | 40 - 55.6 VDC |
| Capacity | 13,875.2 Wh |
| Parallel Capacity | 41,625.6Wh Max |
| Quantity | 3 Batteries Max Per Inverter |
| Charging Temp. Range / Current | 32º to 86º F /150A |
| Discharging Temp. Range | -4º to 86º F /160A |
| Cycles to 90% Depth of Charge | 6,000 |
| Weight / Dimensions | 277 lbs. / 39.75” H x 18.5” W x 10” D |
| Compliance | UL1973, UL9540, UL9540A |
⚠︎ Charge Mode
| Battery Voltage | 48VDC (45V - 55.6VDC) |
| Battery Current | 190ADC Max |
| AC Input Voltage | 240V Split Phase |
| AC Input Frequency | 60Hz |
| AC Input Rated Current | 33.3AAC |
| Max AC Input Current | 33.3AAC |
| Max AC Input Power | 8,000W |
| PV Input Voltage | 150VDC - 500VDC |
| MPPT Input Range | 150VDC - 475VDC |
| PV Input Current | 12ADC per MPPT |
| Max PV Input Power | 14,000W |
| Max PV ISC | 13ADC per MPPT |
⚡️ On-Grid Mode
| AC Output Voltage | 240V Split Phase |
| AC Output Frequency | 60Hz |
| AC Output Rated Current | 33.3AAC |
| Max AC Output Current | 33.3AAC |
| Max AC Output Power | 8,000W |
| AC Output Rated Power | 8,000W |
| Max Continuous AC Passthrough | 90AAC |
| AC Output Power Factor | 0.8 leading to 0.8 lagging |
| Battery Discharge Voltage | 45V - 55.6VDC |
| Battery Discharge Current | 180ADC Max |
| Battery Discharge Power | 8500W |
☀️ Off-Grid Mode
| AC Output Voltage | 240V Split Phase |
| AC Output Frequency | 60Hz |
| AC Output Rated Current | 33.3AAC |
| AC Output Rated Power | 8,000W |
| Peak Output Power | 14000W 10 Seconds |
| Battery Discharge Voltage | 45V - 55.6VDC |
| Max Discharge Current | 190ADC Max |
| PV Input Voltage | 150VDC - 500VOC |
| MPPT Input Range | 150VDC - 475VDC |
| PV Input Current | 12ADC per MPPT |
| Max PV Input Power | 14,000W |
| Max PV ISC | 13ADC per MPPT |
About EMP Shield 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 is a federally approved testing facility that is used to conduct many of today's most advanced and rigorous technological tests. Out testing and evaluations conducted at the facility were documented in depth to show the true ability and durability of the EMP Shield. Below you will find the complete Keystone Compliance testing results of the EMP Shield.
Have a Question?
Contact us via our Contact Us Page or call: 620-412-9978 (MON-FRI / 0800-1700 CST). Customer Service is through our partner EMP Shield which has over 5,000 5-Star reviews.