Residential Energy Solution
Complete home energy storage system with smart management. Save on electricity bills, ensure backup power, and achieve energy independence.
MODULAR ARCHITECTURE
5 kWh — 50 kWh
Compact power.
Infinite possibilities.
The base 5 kWh block slides under a workbench or mounts on a garage wall; clip in extra trays and you're at 50 kWh without touching wiring or firmware.
Auto-Pilot Savings
A pocket-sized hybrid inverter and cloud concierge juggle rates, weather and usage patterns so savings happen on autopilot.
10ms Islanding
Ten-millisecond islanding shields lights, freezers and routers from storms or rolling blackouts, and UL-tested cells promise more than two decades of daily cycles.
"Whether it's a city flat or a farmhouse, one installer, one afternoon, one quiet step toward lower bills and genuine energy independence."
Technical Overview
System Architecture
High-efficiency DC-coupled architecture with seamless grid interaction and cloud monitoring.
Why GRAMUU?
Power on your terms.
From smart tariff surfing to emergency backup, see how GRAMUU transforms your home energy.
Maximize Your Own Solar
Pack your rooftop's extra daylight into a sleek home battery, then let it run the evening shift—less grid, lower bill, zero sunshine wasted.
Turn Cheap Hours into Savings
Fill the pack at midnight rates, empty it when prices spike; the spread lands straight back in your pocket every single month.
Lights-On Insurance
Storm knocked the wires out? The system flips to back-up in a heartbeat—fridge, router and lights stay live without a flicker.
Set-and-Forget Control
Open the app once, pick "save money" or "stay powered", and the cloud brain handles charge, discharge and tariff surfing for you.
Grid Rewards, Not Bills
When the network is gasping for juice, your battery sells watts or throttles demand—utility cheques arrive instead of higher tariffs.
Your Own Private Grid
A cottage on a mountain, a beach shack, a village with shaky lines—PV + storage keeps the volts steady 24/7, no diesel required.
Fuel Your Car at Home Rates
Charge the pack at 2 a.m. low-tide prices, wake up to a topped-up EV and skip the motorway mark-up entirely.
Cleaner, Greener Living
Every stored kilowatt is one less drawn from coal or gas—cut carbon, hit net-zero targets and future-proof the planet.
Built for Any Weather
Whisper-quiet liquid cooling keeps cells in their comfort zone, stretching lifetime and safety from Nordic winters to desert summers.
Frequently Asked Questions
Everything you need to know about the transition to independent energy.
A rechargeable lithium-iron pack that parks surplus solar or cheap grid power until you need it—day, night or during an outage.
Solar panels → hybrid inverter → battery; the inverter swaps DC and AC as required and talks to your router for live data.
Yes—any existing PV array just needs a hybrid inverter grafted on; installation takes a single afternoon.
Most households pick 10 kWh: enough to cruise through 10–12 hours of typical essentials, or run a fridge alone for a day and a half.
By living mainly on stored self-generated power you can knock 60–80 % off annual imports and dodge peak-rate pain entirely.
Lithium-iron-phosphate (LiFePO₄) leads on life-span, safety and cost-per-cycle—exactly what GRAMUU packs under the lid.
Take Action Now
Get the 2025 residential PV energy storage solution + local subsidy list. OEM branding, white label APP, and API secondary development supported.