Commercial & Industrial PV + Storage (Off-Grid) Solution
Summary: For commercial and industrial sites where grid connection is difficult or off-grid backup power is required, an integrated PV and storage system safeguards critical loads.
Solution Overview
For commercial and industrial customers facing difficult grid connection, an unstable grid, or a mandatory off-grid power supply, we provide an integrated PV and storage microgrid to safeguard production and critical loads.
Key Points
- Integrated PV and storage, suited to difficult grid connection or backup power scenarios
- STS ensures seamless, uninterrupted power for critical loads
- Can serve as primary supply or backup, flexibly configured
- PCS power quality meets the needs of variable frequency drives and PLCs
Application Scenarios and Challenges
In some regions, capacity expansion is restricted and grid connection takes a long time; alternatively, grid fluctuations or power rationing disrupt continuous production, and critical processes cannot tolerate power interruption.
VGRID System Composition
- Power Conversion System (PCS): Provides unified conversion between PV, battery and loads, and supports off-grid operation.
- Static Transfer Switch (STS): Switches seamlessly between the main grid and the microgrid, protecting automated production lines.
- Battery Energy Storage System (BESS): Stores PV energy to secure supply and smooth production load fluctuations.
- Energy Management System (EMS): Dispatches according to the production plan, prioritising green power and reducing demand charges.
- Microgrid AC Cabinet (MPS): Factory-level AC cabinet with integrated metering and protection.
Core Value
- Escape grid connection constraints and start production quickly
- Uninterrupted power for critical loads, ensuring continuous production
- Self-consumption of green power, reducing electricity costs
- Modular deployment, scalable with production capacity
Typical Applications
Suitable for new industrial parks, border factories, data centres and production lines with high requirements for power supply reliability.
Delivery and Support
VGID POWER (VGRID) provides integrated delivery covering site assessment, system design, manufacture of core equipment (PCS/STS/BESS/MPS), commissioning and remote O&M. Contact us for a customised solution and quotation.
FAQ
Can an off-grid solar-plus-storage system fully replace the utility grid?
For sites where grid connection is difficult or power supply must be guaranteed, it can serve as the main supply; typically a diesel generator is configured or a grid connection interface is retained as an extreme fallback.
Is it compatible with production line automation equipment?
The STS provides seamless switching, and the power quality delivered by the PCS meets the requirements of variable frequency drives and PLCs.
What size off-grid solar-plus-storage system is typically used for commercial and industrial applications?
It is configured modularly based on critical load power and backup duration, ranging from several hundred kW to the MW level.
How does the system switch between grid-connected and off-grid modes?
The STS switches automatically within milliseconds, with no perceptible impact on loads; the EMS coordinates the entire process.
