Clear answer
Clear answer, explained.
An AC-coupled battery system connects to the building’s electrical panel through a dedicated battery inverter, allowing stored energy to charge from solar or the grid and discharge during peak demand or outages. Engineering review ensures electrical capacity, protection settings, and utility interconnection requirements are met.
Key points
What this means in practice.
- Batteries can be added without replacing existing solar
- AC-coupled systems are common for retrofits
- Uses a separate battery inverter/charger
- Enables peak shaving, load shifting, and backup power
- May require electrical upgrades or utility approval
- Monitoring integrates with existing solar controls
When this applies
Best-fit environments.
- Businesses with operational rooftop solar systems
- Sites seeking demand charge reduction or resilience
- Offices, retail, warehouses, and commercial facilities
- Solar systems with daytime excess generation
Q·01
