Residential Solar‑Storage‑EV‑Charging Project in Germany

Location: Germany 

Product Deployed: Betterion Energy IonStack Series‑SL Stackable Residential Energy Storage System 

System Specs: 5.5kW / 10kWh 

Operation Mode: Off‑Grid for Energy Self‑Sufficiency

Installation: Indoor semi‑covered patio mounting

Delivering a full solar‑storage‑EV‑charging integrated solution for a German detached house. Fitted with rooftop PV panels, IonStack Series‑SL home energy storage and domestic EV charger, this project builds a self‑sustaining residential micro‑grid. It addresses grid volatility and blackout hazards, maximizes solar yield and delivers independent household power supply.

Customer Challenges

Driven by rising electricity tariffs and occasional utility outages across parts of Germany, the homeowner intended to leverage rooftop solar generation and cut reliance on public grid supply. The system needed to fit a semi‑covered indoor patio and match minimalist modern home aesthetics. One unified solution was required to cover daily household loads, emergency backup and electric vehicle charging scenarios.

Betterion Energy Solution

IonStack Series‑SL, Betterion Energy's stackable high‑voltage residential ESS with 5.5kW output and 10kWh usable capacity, was selected for this deployment. Its compact stack‑modular form factor suits patio‑style indoor installation. The integrated high‑performance BMS ensures cell safety and extended cycle life, enabling robust off‑grid performance.

Surplus solar energy harvested in daytime is stored in IonStack Series‑SL. During nights, cloudy periods or grid blackouts, the battery discharges to power household appliances. Connected to the home EV charger, stored solar power directly charges electric vehicles, forming a complete residential energy loop of "PV‑Storage‑Charging".

Project Achievements

• ✅ True Household Energy Self‑Sufficiency: Stable off‑grid operation reduces grid import and brings substantial savings on energy bills.
• ✅ Reliable Whole‑Home Backup Power: Smooth off‑grid transition upon grid failure keeps critical home loads running for secured living power.
• ✅ Integrated Solar‑Storage‑EV‑Charging: Co‑works with EV charger to power e‑vehicles with self‑produced solar and improves PV utilization rate.
• ✅ Aesthetic & User‑Friendly Deployment: Sleek all‑in‑one appearance blends well with modern German‑style housing. Quick patio installation and low maintenance efforts.

Why IonStack Series‑SL

IonStack Series‑SL is Betterion Energy's stackable residential battery tailored for European markets. Featuring safe LFP cells for long cycle life, flexible capacity expansion, dual on‑grid / off‑grid capability and smart energy management. Optimized for various European residential layouts, it delivers trustworthy clean energy for households.