PV Local Consumption Storage Solution
Summary: Smooths transformer impact and curtails PV clipping during peak generation, improving self-consumption rate and revenue.
Solution Overview
For commercial and industrial rooftops and parks with existing or new distributed PV, paired storage improves PV self-consumption and reduces curtailment.
Key Points
- PV+storage improves self-consumption rate and revenue
- Smooths PV fluctuations, protects transformers
- Reduces curtailment and power factor penalties
- Demand management and peak shaving
Applicable Scenarios and Challenges
During peak PV generation, local consumption is insufficient; reverse feed causes transformer impact, output limitation and power factor penalties; at night without PV, grid purchase is still required.
VGRID System Composition
- Power Conversion System (PCS): Enables coordinated conversion between PV and battery, smoothing output.
- Static Transfer Switch (STS): Protection switching at the grid connection point.
- Battery Energy Storage System (BESS): Stores solar energy at midday, discharges in the evening, boosting self-consumption.
- Energy Management System (EMS): Optimizes charging and discharging based on PV output and load forecasts.
- Microgrid AC Cabinet (MPS): Rooftop/park-level AC cabinet.
Core Value
- Higher self-consumption rate, lower electricity bills
- Reduced curtailment and reverse feed impact
- Lower power factor and capacity charges
- Improved PV project revenue
Typical Applications
Suitable for distributed PV with storage at factory rooftops, logistics parks and commercial complexes.
Delivery and Support
VGID POWER provides integrated delivery from site assessment, system design, core equipment manufacturing (PCS/STS/BESS/MPS) to commissioning and remote O&M. Contact us for customized solutions and quotations.
FAQ
Where does the main revenue from PV-plus-storage come from?
It comes from improving the self-consumption rate (buying less peak-price electricity), reducing curtailment and power factor penalties, and demand management.
What if the roof load capacity is insufficient?
Ground-mounted cabinets or a modular layout can be used, and the PCS/MPS supports phased connection.
How large is the storage typically sized for PV-plus-storage?
It is sized according to installed capacity and the self-consumption gap, commonly at 10–30% of installed capacity.
Can it be stacked with peak-valley arbitrage?
Yes, the same system handles both self-consumption improvement and peak-valley arbitrage, with unified EMS scheduling.
