Solar + Storage + EV Home System
Complete residential energy independence: hybrid solar inverter, LiFePO4 stackable battery, and smart EV wallbox - designed to work as one integrated system.
The Challenge
Homeowners who add an EV charger to an existing solar system often face three problems: solar energy wasted to the grid at low feed-in tariffs, the EV charger drawing from the grid at expensive peak rates, and no backup power when the grid fails.
Our Approach
- Hybrid inverter first: Our 5-10kW hybrid inverter connects solar, battery, and grid in priority order - solar first, then battery, then grid. Export to grid only when both battery and EV are full.
- LiFePO4 battery stack: Start with one 5kWh module and stack up to 35kWh. LiFePO4 is the safest and longest-life chemistry - 6,000+ cycles, 10-year warranty.
- Smart EV wallbox integration: The 7-22kW wallbox communicates with the inverter via OCPP or dry contact. It charges the EV only when solar surplus exceeds a threshold - zero extra grid cost.
- Backup power mode: When the grid fails, the system automatically islands and powers your home essentials and continues slow-charging the EV from available solar.
Recommended Products
5kW Single-Phase Hybrid Inverter
MPPT 100A, off-grid, LiFePO4 ready
5kWh LiFePO4 PowerWall
Stackable to 35kWh, 10-yr warranty
7kW Smart AC Wallbox
WiFi, OCPP, solar surplus charging
Case Reference
4kWp solar + 5kW hybrid inverter + 10kWh LiFePO4 + 22kW wallbox. EV charged entirely from solar surplus in 8 months of the year. Grid electricity bill reduced 78%. Load-shedding no longer affects the household.
FAQ
Can I add the battery and EV charger to my existing solar system?
In most cases yes, if your existing inverter has a battery port or if you replace the inverter with our hybrid model. We offer free compatibility assessment - just share your current inverter model.
How do I ensure the EV charger only uses solar power?
The wallbox communicates with the inverter via OCPP or a simple dry contact signal. You set a surplus threshold and the charger activates automatically. No solar energy is wasted to the grid at low feed-in tariff.
What happens to my EV charging when there is no sun?
The system falls back to battery first, then grid. You can schedule grid charging at off-peak tariff times via the app. The EV is always ready the next morning.
Is the 5kWh battery enough for a typical home plus EV?
For an average European home (4,000kWh/year) with a 4kWp solar array, a 10kWh battery covers over 80% of evening demand without grid import. We recommend starting with 10kWh and adding modules if needed.
Ready to Start Your Project?
Send us your site plan or power requirements and we will prepare a complimentary system design within 2 business days.
Get Free System Design