A 5MW solar PV system paired with approximately 5MWh of battery storage is a practical configuration for projects that need more than daytime solar generation.
Instead of treating the PV array and battery system as two separate purchases, project developers and EPC teams increasingly evaluate them as one integrated energy system.
For a project of this scale, the PV side must provide sufficient generation capacity and efficient land use, while the battery system needs to manage when and how that energy is used.
One possible configuration is to combine Trina Vertex N 730W-class modules on the PV side with a Deye WS-L5000 utility-scale battery energy storage system on the storage side.
The objective is not simply to install high-power solar panels and a 5MWh battery.
It is to create a PV + BESS system that can generate, store and dispatch electricity according to the project's operating requirements.
1. A 5MW PV + 5MWh BESS System: The Basic Concept
A 5MW PV + 5MWh BESS project can be viewed as two connected energy assets:
5MW-class solar PV generation
approximately 5MWh battery storage
The PV system generates electricity during solar production hours.
The BESS can then store part of that energy and release it later according to the project's operating strategy.
Depending on the project, the system may be designed for applications such as:
Solar energy shifting
Peak shaving
Renewable energy integration
Grid-side energy storage
Curtailment reduction
Power management
Grid support
Renewable energy smoothing
The actual operating strategy depends on the grid, electricity tariff, interconnection requirements and project objectives.
This is why a PV BESS project should be designed around the energy profile and grid requirements, rather than simply selecting a fixed combination of PV and battery capacity.
2. Why High-Power Modules Matter on the PV Side
For a 5MW-class solar project, module selection has a direct effect on the number of modules installed.
If a project uses approximately 730W modules, a 5MW DC array would require roughly:
5,000,000W ÷ 730W ≈ 6,850 modules
The actual module quantity will depend on the final DC capacity, module power and system design.
Compared with lower-power modules, high-power modules can reduce the number of modules required to reach the same installed capacity.
This can influence:
Module quantity
String configuration
Mounting structure
DC cabling
Installation work
Land utilization
Transportation
Balance-of-system costs
However, higher wattage alone does not determine whether a module is suitable.
The module's electrical characteristics, dimensions, weight, bifacial performance and compatibility with the inverter and mounting system also need to be considered.
3. Trina Vertex N 730W-Class Modules for the PV Array
The Trina Vertex N platform is designed around N-type technology and is positioned for utility-scale and commercial applications.
Trina describes its Utility Vertex N modules as high-power, high-efficiency products with high bifaciality, low temperature coefficient and low degradation characteristics.
The TSM-NEG21C.20 family is particularly relevant to high-power project applications.
Trina's current product information identifies the NEG21C.20 as an N-type TOPCon bifacial dual-glass module family. Its official documentation includes 730W-class configurations, while newer versions of the Vertex N platform have continued to move toward higher power levels.
For MoregoSolar's current supply range, the TSM-xxxNEG21.20 family is available in approximately the 715–745W range.
This makes the 730W-class configuration a practical option when a project is targeting approximately 5MW of PV capacity.
The important point for project procurement is to confirm the exact model, wattage and current supply configuration before finalizing the PV design.
4. From Solar Panels to a Complete PV System
A 5MW PV system is more than a collection of 730W modules.
The module selection needs to be considered together with:
PV string configuration
DC voltage
Operating current
Inverter input characteristics
DC/AC ratio
Mounting system
DC cabling
Combiner and protection equipment
AC collection
Transformer
Grid connection
For example, using a high-power module can reduce the number of modules, but the higher operating current of large-format modules must also be considered when selecting compatible inverters and electrical equipment.
This is why the correct approach is:
Module → String → Inverter → AC system → Transformer → Grid
rather than selecting the module independently.
5. Adding 5MWh-Class Battery Storage
The second part of the project is the energy storage system.
For a nominal 5MWh-class requirement, MoregoSolar can supply the Deye WS-L5000 & WS-MV5000 utility-scale energy storage solution.
The Deye WS-L5000-BC-2 provides approximately 5.016MWh nominal energy per 20-foot battery container using liquid-cooled LiFePO₄ battery technology. The associated WS-MV5000 system integrates power conversion and medium-voltage step-up functions for large-scale applications.
This means the system can be considered as a coordinated energy-storage block rather than simply purchasing a battery container separately from the power-conversion equipment.
Deye specifies the WS-L5000 system for applications including large-scale renewable energy, solar + storage and grid-side energy storage.
6. Why PV Capacity and Battery Capacity Should Be Designed Together
A 5MW PV array and approximately 5MWh of storage may sound like a straightforward 1:1 configuration.
But the actual system behavior depends on how the battery is intended to operate.
For example, the project may need to:
Store Excess Solar Generation
During periods of high solar output, part of the PV generation can be directed to the battery instead of being immediately exported.
Shift Solar Energy
Energy generated during the daytime can be discharged later when solar production decreases.
Reduce Peak Demand
For commercial or industrial applications, stored energy can potentially be discharged during high-demand periods.
Support Grid Operation
Depending on the system configuration and grid requirements, the BESS can provide functions such as frequency regulation, voltage-related support and other grid services.
Reduce Renewable Curtailment
Where grid constraints prevent all available solar power from being exported, storage can provide another destination for part of the generation.
The appropriate operating mode depends on the project's electricity market, grid conditions and technical requirements.
7. The Deye WS-L5000 Is More Than a 5MWh Battery Container
For a utility-scale PV BESS project, battery capacity is only one part of the system.
The Deye WS-L5000 & WS-MV5000 architecture combines battery storage with power conversion and medium-voltage transformation.
The official configuration includes:
Approximately 5.016MWh nominal energy per battery container
314Ah LiFePO₄ cells
Liquid cooling
1000–1500Vdc battery operating range
Two 2,500kVA PCS sections
5,200kVA transformer
Grid-support functions
Integrated protection and fire-safety systems
Remote monitoring and battery health management
This architecture is designed to reduce the need to treat the battery, PCS and MV interface as completely independent equipment packages.
For a 5MW-class project, that system-level approach can be particularly relevant.
8. A Practical 5MW PV + 5MWh BESS Architecture
A simplified project structure can be understood as:
Trina Vertex N 730W-Class Modules
↓
PV Strings
↓
PV Inverters
↓
AC Collection
↓
Transformer / Grid Connection
↕
Deye WS-L5000 Battery Storage
↓
Deye WS-MV5000 PCS + MV Interface
↓
Grid / Load / Renewable Energy System
The final electrical topology will depend on the project's interconnection requirements and selected equipment.
The PV and BESS can therefore be designed as coordinated assets within the same energy-management strategy.
9. What Can a 5MW PV + 5MWh System Be Used For?
A system of this scale can be considered for several types of applications.
Utility-Scale Renewable Energy Projects
The system can combine solar generation with energy storage to improve the flexibility of renewable power output.
Commercial and Industrial Energy Systems
Where a suitable grid connection and tariff structure exist, storage can be used to shift energy and manage demand.
Grid-Side Energy Storage
The battery system can support grid-related applications depending on local regulations and market mechanisms.
Renewable Energy + Storage Projects
For solar projects facing output volatility or grid constraints, adding storage can provide greater operational flexibility.
Projects Requiring Dispatchable Renewable Energy
Instead of exporting solar energy only when the sun is available, storage can help shift part of the generated energy toward a later period.
The economic value of each application depends heavily on the local electricity market and grid rules.
10. What Should Be Evaluated Before Finalizing the System?
A 5MW PV + 5MWh BESS project should be evaluated at the system level.
PV Side
Target DC capacity
Module wattage
Module efficiency
Bifaciality
Module dimensions
String configuration
Inverter compatibility
DC/AC ratio
BESS Side
Nominal energy capacity
Power rating
Charge/discharge duration
Battery chemistry
Cooling system
Fire protection
PCS configuration
MV interface
Grid Side
Grid voltage
Interconnection requirements
Export limitations
Power factor requirements
Grid-support functions
Protection requirements
Commercial Side
PV module price
BESS price
Inverter / PCS
Transformer
Shipping
Installation
O&M
Warranty
Expected energy yield
Battery cycling strategy
A project should therefore be evaluated based on total system economics, not only the price per watt of the solar modules or the price per kWh of the battery.
11. Why Module and Storage Selection Should Be Coordinated
One of the biggest differences between purchasing individual products and planning a PV BESS project is the need to coordinate the equipment.
For example:
A higher-power module may reduce the number of PV modules.
A higher DC capacity may change the inverter configuration.
The inverter configuration can influence the AC architecture.
The battery power rating affects how quickly stored energy can be charged or discharged.
The battery capacity determines how much energy can be shifted.
The grid connection determines how much power can actually be exported.
Each decision therefore affects another part of the system.
This is why a project should be evaluated as:
PV generation + power conversion + energy storage + grid interface
rather than as separate product purchases.
12. MoregoSolar's 5MW PV + 5MWh BESS Approach
MoregoSolar supplies major-brand PV modules together with utility-scale energy storage equipment for projects that require a coordinated solar + storage configuration.
For a project targeting approximately 5MW PV + 5MWh BESS, the equipment can include:
PV
Trina Vertex N 730W-class modules
with the TSM-xxxNEG21.20 family available in approximately the 715–745W range.
Energy Storage
Deye WS-L5000
with approximately 5.016MWh nominal battery capacity per battery container.
Power Conversion & MV Interface
Deye WS-MV5000
for the associated PCS and medium-voltage transformation architecture.
The final configuration should be developed according to:
PV capacity + battery power + battery duration + grid requirements + project operating strategy.
13. A 5MW PV + 5MWh BESS Project Is a System, Not a Shopping List
The main value of a PV BESS project does not come from selecting the largest solar module or the largest battery container individually.
It comes from how the components work together.
For the PV side, a 730W-class Trina Vertex N module can provide high DC power per module and help reduce the number of modules required for a 5MW-class array.
For the storage side, a Deye WS-L5000 provides approximately 5MWh of battery capacity in a utility-scale liquid-cooled configuration.
Together, they form the foundation of a renewable energy system capable of doing more than simply generating electricity during daylight hours.
The actual system design, however, should be based on the project's:
generation profile + load profile + grid conditions + energy-storage strategy + commercial objectives.
14. Need a 5MW PV + 5MWh BESS Configuration?
If you are planning a project around:
5MW Solar PV + 5MWh Battery Energy Storage
MoregoSolar can work with the project requirements to evaluate the appropriate combination of:
PV modules
PV inverters
Battery storage
PCS
MV equipment
Mounting and electrical components
System configuration
Supply and logistics
For a preliminary assessment, provide:
Project capacity + location + grid voltage + PV target + storage duration + application
For example:
5MW PV + 5MWh BESS / utility project / grid-connected
or
5MW solar + 5MWh storage / industrial site / peak shaving
The equipment selection can then be developed around the project's actual operating requirements rather than treating PV modules and battery storage as separate purchases.
A successful PV BESS project starts with the system architecture—not with a single product.
