Perma Batteries — Hero (US)
Premium off-grid solar systems

Design your off-grid solar system

We've selected only the best equipment, and we will help you design and build the perfect solar system, customized to your needs.

Off-grid experts since 2018

We design, deliver and monitor premium off-grid solar systems — across France & Europe.

Choosing the right solar system is critical Compare our different solutions to find the one best suited
DISCOVER OUR RANGE

Three different systems, one goal : keep the power on, no matter what

Your off-grid solar project is unique. We've chosen the best-in-class equipment.

Sigenergy SigenStor Cutting-edge

THE INTEGRATED

The AI-powered 5-in-1 energy system.

  • 5-in-1 all-in-one tower Sigenergy 5-in-1 home energy storage tower One stack, the whole system A single tower integrates the hybrid solar inverter, battery PCS, stackable LFP battery packs, the AI-driven EMS — and an optional bidirectional EV DC charger (V2X). One footprint, one install, one app.
  • Field-configurable 3.8–11.4 kW Sigenergy Energy Controller field-configurable inverter One inverter, six power ratings The Energy Controller is a single SKU, field-configurable to 3.8 / 4.8 / 5.7 / 7.6 / 9.6 / 11.4 kW split-phase 120/240V. Right-size the system on site, match your main panel and utility limits — and upgrade later without swapping hardware.
  • Stackable up to ~38 kWh Sigenergy stackable battery modules Capacity that grows with you LFP battery packs stack like building blocks — start with one module, add more anytime up to ~38 kWh per tower. Active inter-pack balancing lets you mix new and old modules, so expanding later is plug-and-play.
  • Certified UL 9540 & UL 1741 SB Sigenergy UL certifications The full US safety stack UL 9540 system listing with UL 9540A fire testing, UL 1973 battery packs, UL 1741 SB / IEEE 1547 grid interconnection — the complete certification stack AHJs and utilities expect, for smooth permitting and interconnection approval.
Customize my system
Dès 13 000 € Learn more
XESS — gamme off-grid Field-proven

THE SOVEREIGN

MidNite Solar power electronics. American-built.

  • Rosie inverter 7 kW · 3× surge MidNite Solar Rosie inverter/charger Low-frequency muscle, half the weight The MidNite Rosie delivers 7 kW of 120/240V split-phase power and surges up to 3× its rating to start pumps, compressors and A/C units — at only 43 lbs. Stackable in parallel, with built-in 2-wire auto generator start. UL 1741 & UL 458 listed.
  • 600 VDC MPPT controllers MidNite Solar Hawke's Bay and Barcelona MPPT charge controllers Hawke's Bay & Barcelona High-voltage 600 VDC MPPT with a huge 185–585V tracking window: thinner wire, shorter runs, usually no combiner box. Hawke's Bay charges up to 120A; the dual-tracker Barcelona pushes 200A combined — the most powerful MPPT on the market.
  • One display, whole system MidNite Solar MNGP2 control panel MNGP2 + Whizbang Jr. Inverter and charge controllers talk over CANBUS and are programmed from a single MNGP2 graphics panel — commission one Rosie, the second clones its settings. Bluetooth app monitoring and accurate battery state-of-charge via the Whizbang Jr. shunt.
  • Field-repairable, fault-tolerant MidNite Solar made in Arlington WA USA Built to be serviced, not replaced Boards are replaceable in the field — when an all-in-one fails, you replace everything; here you swap one part and keep the lights on. Separate inverter/MPPT architecture means no single point of failure. Optional NEC 2020 arc fault, ground fault & rapid shutdown modules. Designed & built in Arlington, WA.
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Sur devis Learn more
Atelier — architecture sur mesure EMP-hardened

THE ALL ROUNDER

Sol-Ark 12K platform. Any grid, any battery.

  • Grid-tie, off-grid or backup — one box Sol-Ark 12K hybrid inverter platform One platform, every configuration The Sol-Ark 12K manages solar, battery, grid, generator and loads from a single all-in-one unit — grid-tied, off-grid or battery backup, with a sub-10ms UPS-grade switchover when the grid fails. Dual 500 VDC MPPTs, 97.5% peak efficiency.
  • EMP & lightning hardened Sol-Ark EMP hardened protection Built to survive the worst day The EMP-hardened Sol-Ark withstands over twice the military EMP requirement (100+ kV/m) and ships with suppressors for your solar array and home appliances — protection against solar flares, lightning, EMP events and grid attacks.
  • Battery-agnostic 48V design 48V battery options for Sol-Ark Your battery, your budget Works with virtually any 48V battery — lithium or lead-acid, entry-level or premium. No vendor lock-in: pick the chemistry, brand and capacity that fit your project today, and switch or expand freely tomorrow.
  • Parallel up to 9 units · 108 kW Sol-Ark inverters stacked in parallel From cabin to ranch Each unit delivers 12 kW continuous with 16 kVA surge, and up to 9 inverters stack in parallel for 108 kW total. NEMA 3R outdoor-rated, built-in rapid shutdown, arc fault & ground fault protection, backed by a 10-year warranty.
Customize my system
Starting at $10000 Learn more

CAPACITY

Up to 1400 Ah

VOLTAGE

From 12 to 48V

INVERTER COMPATIBILITY

SOL-ARK | VICTRON

02 > Nickel-Iron batteries

NICKEL-IRON
THE MOST DURABLE BATTERY IS BACK.

We supply original, Nickel-Iron batteries that will bring you the resiliency and unmatched uptime needed in an off-grid scenario. These batteries will have to be coupled to a top-tier battery inverter such as SOL-ARK or Victron.

01 > All-in-one off-grid solution

SUNCONNECT , PRE-WIRED OFF-GRID COMPONENTS

SUNCONNECT is a pre-wired, customized power boards embedded all necessary components (hybrid inverters, supervision, DC/AC protections) for a quick and hassle-free installation. 

POWER

Up to 11 kVA

SOLAR

Up to 20 kWp

SCENARIO

ON/OFF-GRID

FOR YOUR OFF-GRID SOLAR PROJECT, RELY ON OUR CONSULTANCY SERVICES

dimensionnement autonomie solaire
Design & engineering

We will design the solar system to suit your needs, including schematics, electrical engineering.

Panneaux solaires full black
Sales & procurement

We sell nation-wide our premium solar equipments, batteries, solar inverters. 

Premium support

We assist in every step of your installation process, including inverter set-up, remote commissioning and efficient after-sales support.

All of our off-grid solar kits can be integrated to an existing self-consumption solar system. In that scenario, instead of feeding-back surplus energy to the local grid, you will instead recharge your solar batteries. That will enable you to save extra on your bills by using that energy stored during the night. Additionally, you will also be able to use the back-up function of your battery-based inverter to keep the lights on in case of a grid outage.

We sell a wide range of off-grid solar kits, from 3 kVA up to 100 kVA, we have virtually no limit and we will adapt to your specific requirements. 

Nickel-Iron batteries are famous for their very long cycle life and durability. They’re often called a fail-proof battery, because they do not rely on a single piece of electronic in order to operate properly (which is the case with lithium-ion batteries). That gives them an edge in certain environment, especially in off-grid sites when one is looking at critical reliability for their energy storage needs. Additionnally, they’re also EMP-proof, meaning they’ll well suited to equip bunkers and survival sites.

Yes, that’s actually where our expertise lies. We will gladly study your specific energetic needs, in order to create a customized off-grid system based on your technical requirements. The choice of the right platform (SUNCONNECT, SUNMODULO, SIGENERGY) will be discussed as well as it’s a crucial point, and it depends on both how you will use it and how much power you will require as well.

We rely on several shipping companies that will deliver door-to-door our off-grid solar kits. Feel free to contact us to get a quote.

LEARN MORE ABOUT OUR OFF-GRID SYSTEMS

Our premium range of off-grid solar solutions encompasses battery inverters, batteries (Nickel-Iron and lithium-ion) and pre-wired, customized turn-key solutions. We will assist in every step of your off-grid solar project by designing and offering you the best solution.

GOT AN OFF-GRID SOLAR PROJECT ? LET'S POWER ON!