Storage architectures matched to your project
NAPCO materials describe DC-coupled industrial concepts and AC-coupled retrofits for existing solar plants.
Use cases
Peak shaving
Store energy at the right time and use it at peak demand to manage the power drawn from the grid. Savings depend on the tariff and the load profile.
Solar self-consumption
Use solar generation at other hours than when it is produced, within the battery capacity and the energy-management strategy.
Backup for critical loads
Storage and switching designed to keep defined loads supplied. Backup duration depends on the load power and the actual usable capacity.
Microgrids and multi-source coordination
Coordinated control of solar, grid, battery and, where needed, a diesel generator, designed around the needs of the project.
Retrofit storage for existing PV
An independent storage branch added on the AC side of an existing plant, after the connection and protection have been checked for compatibility.
Energy time shifting
Energy stored during generation or purchase periods and discharged in a controlled way when it is needed. The economics depend on operating conditions.
Conceptual architectures
Reference architecture
Residential and small-commercial all-in-one
Battery, solar input and grid supply connect to one integrated unit that powers the loads and provides backup.
- Solar PV
- Grid
- HUDI all-in-one (battery + inverter)
- Load
Suited products:HUDI Series
Reference architecture
DC-coupled architecture for smaller industrial loads
Solar panels connect to a DC bus through MPPT. The battery sits on the DC side, and the PCS manages power for the AC load or grid.
- PV Array
- DC/DC MPPT
- DC Bus
- Battery
- PCS DC/AC
- 400V Load/Grid
- EMS
* 950V DC and 400V AC appear in this design example, not as fixed product specifications.
Suited products:JUPAR SeriesHEZAR Series
Reference architecture
AC-coupled retrofit for existing solar plants
Storage with its own PCS connects as an independent branch on the AC side of the existing solar plant's bus or grid connection.
- Existing PV + inverter
- Plant AC bus
- BESS battery
- BESS PCS
- Metering / protection
- EMS / Grid
Suited products:JUPAR SeriesHEZAR Series
Reference architecture
Commercial-industrial hybrid BESS architecture
In the reference architecture, PV, generator, grid and load are monitored and managed by the PCS and EMS.
- Solar PV
- Diesel generator
- Grid
- Load
- BESS cabinet
- Meter
- EMS
- Monitoring
Suited products:JUPAR Series