Solar PV Container with BESS
Polinovel Solar PV Container with BESS is a medium-voltage solar storage power plant designed to deliver grid-ready and dispatchable renewable energy at utility scale.
It is not limited to site-level power supply. Instead, it upgrades containerized solar generation into an integrated energy infrastructure asset by enabling 6–35kV medium-voltage output, centralized energy storage, and grid interface capability.
With its ability to coordinate solar generation and battery dispatch, the system is suitable for large-scale solar plants, mining power stations, industrial energy bases, and grid-connected renewable energy projects where stable and controllable power delivery is required.
Solar PV Container with BESS Key Features
Utility-Scale Power Plant Output
The system is designed to function as a utility-scale solar storage power plant, delivering MW-level controllable energy instead of simple site-level electricity supply.
Medium-Voltage Grid Integration (6–35kV)
Integrated step-up technology enables medium-voltage output, allowing direct connection to industrial networks and grid-side infrastructure without relying on low-voltage distribution systems.
Dispatchable Solar Energy System
Combines solar generation and 5MWh battery storage to shift energy in time, enabling controlled power output based on demand rather than real-time sunlight conditions.
Integrated Power Plant Architecture
All subsystems including PV containers, BESS, PCS, and grid interface are designed as a unified power plant architecture, reducing fragmentation between generation, storage, and grid connection.
Solar PV Container with BESS Specification
| PV Container | ||
| Number of PV Containers | 16 | 24 |
| Total PV Power | 2304 kWp | 3456 kWp |
| Module Power | 720 W | |
| Open Circuit Voltage | ~49 V | |
| Short Circuit Current | 18.55 A | |
| Module String Configuration | 28/29 pcs per string | |
| PV Transformer Station | ||
| Transformer Capacity | 2000 kVA | 3150 kVA |
| Voltage Range | 690 V / 6–35 kV | |
| Transformer Type | Dry/Oil | |
| Protection Grade | IP55 | |
| Cooling Method | Air cooling | |
| Relative Humidity | 0–95% (non-condensing) | |
| Operating Temperature | -20 ~ +50°C | |
| Altitude | 4000 m (derating >2000 m) | |
| Dimensions | 3700×2300×2600 mm | 3900×2300×2600 mm |
| Weight | 6.5 t | 9 t |
| Battery | ||
| Number of Containers | 1 | 2 |
| Total Battery Capacity | 5015 kWh | |
| Cell Type | LFP314Ah | |
| Pack Configuration | 1P52S | |
| Battery Cluster Configuration | 12×1P416S | |
| Battery Rated Voltage | 1331.2 V | |
| Battery Voltage Range | 1164.8–1497.6 V | |
| Cooling Method | Liquid cooling | |
| Fire Suppression System | Aerosol | |
| Dimensions | 6058×2438×2896 mm | |
| Weight | 42 t | |
| PCS Boost Integrated Unit | ||
| Rated Output Power | 2500 kW | 5000 kW |
| Rated Output Voltage | 6–35 kV | |
| Rated Frequency | 50/60 Hz | |
| Transformer Capacity | 2500 kVA | 5000 kVA |
| Transformer Type | Dry/Oil | |
| Protection Grade | IP55 | |
| Cooling Method | Air cooling | |
| Operating Temperature | -20 ~ +50°C | |
| Altitude | 4000 m (derating >2000 m) | |
| Dimensions | 6058×2438×2896 mm | 12192×2438×2896 mm |
| Weight | 17 t | 22.5 t |
Solar PV Container With BESS System Specifications
Integrated Medium-Voltage Plant Architecture
Combines 16–24 PV containers, a 2000–3150 kVA transformer station, a 5015 kWh battery container, and a 2.5–5 MW PCS boost unit into one pre-matched system that connects to the grid at 6–35 kV - removing on-site integration of multi-vendor equipment and shortening commissioning.
6–35 kV Medium-Voltage Grid Output
Built-in step-up from 690 V to 6–35 kV feeds a medium-voltage collection bus or industrial network directly, drawing lower current for thinner cables and reduced conduction loss, with no separate low-voltage stage or externally procured power conversion and step-up hardware.
5015 kWh Liquid-Cooled LFP Battery
5015 kWh of LFP (LiFePO4) 314 Ah cells at 1331.2 V, liquid-cooled to hold every cell in a tight temperature band with integrated aerosol fire suppression - delivering long cycle life and lower lifecycle cost per stored kWh under daily utility duty.
2.5–5 MW PCS With VF / PQ / VSG Modes
A 2.5–5 MW power conversion system runs grid-forming (VF), grid-following (PQ), and virtual synchronous generator (VSG) modes, supplying stable medium-voltage power to grid-tied, off-grid, and weak-grid sites without any hardware change.
Dispatchable Output
Two-hour full-power storage shifts surplus midday solar to evening demand, reducing curtailment while supporting peak shaving, frequency regulation, and renewable firming from a single asset.
Scalable 2304–3456 kWp Configuration
Scales from 16 PV containers / 2.5 MW / one battery (2304 kWp) to 24 PV containers / 5 MW / two batteries (3456 kWp) by adding pre-matched blocks of containerized battery energy storage, with no electrical redesign between sizes.
Solar PV Container With BESS System Architecture
Solar generation and 5 MWh of storage land on a single medium-voltage bus and export at 6–35 kV - no separate low-voltage stage, no field integration of multi-vendor equipment.
Problems Solar PV Container With BESS Solves
Solar Curtailment & Midday Price Loss
Export caps and oversupply force PV plants to spill power or sell at the day's lowest prices. The 5015 kWh battery stores that surplus and discharges it into higher-value evening hours through load shifting.
Grid Connection & Integration Delays
Standalone grid connections queue for years, and wiring PV, transformers, switchgear, and batteries from separate vendors on site adds months of risk. A pre-integrated plant behind a single connection point removes both.
Conduction Losses at Low Voltage
Moving MW-level power at low voltage requires heavy cables and loses more energy over distance. A 6–35 kV output draws lower current, cutting cable size and conduction loss across a large site.
Diesel Dependency at Remote Sites
Off-grid mines and industry burn costly trucked-in diesel with no reactive-power support for sensitive loads. Grid-forming medium-voltage solar storage displaces diesel runtime and supplies reactive power on site.
VF / PQ / VSG Multi-Mode Control
Three control modes let one system serve connected, off-grid, and weak-grid sites without hardware changes - covering grids that cannot otherwise absorb more solar.
VF
Grid-Forming for Off-Grid Sites
Sets its own voltage and frequency to power islanded networks where no stable grid reference exists - the basis for replacing diesel on a standalone site.
PQ
Grid-Following on an Existing Grid
Dispatches defined active and reactive power into a medium-voltage grid connection for energy shifting, smoothing, and scheduled output.
VSG
Virtual Inertia for Weak Grids
Emulates the inertia and damping of a conventional generator, holding frequency and voltage stable on renewable-heavy or weak grids that would otherwise reject more solar.
Where the Solar PV Container With BESS Applies
Utility-Scale Solar Power Plants
Firm PV output against cloud, control ramp rate to meet grid code, capture curtailed midday solar, and time-shift to evening peaks - turning a variable solar field into a dispatchable utility-scale plant.
Mining & Remote Industrial Power
Firm 6–35 kV solar storage displaces diesel runtime, smooths solar swings for heavy equipment, and supplies reactive power for sensitive loads across remote and off-grid sites.
Grid-Side Frequency & Voltage Support
Provides frequency regulation, voltage support, and reserve capacity at the medium-voltage connection point, helping operators absorb more renewables on constrained networks.
Industrial Energy Bases
Shaves demand peaks and moves load off expensive tariff windows, with 5 MWh of on-site storage backing critical processes through outages at industrial voltage.
Solar PV Container With BESS vs. Conventional Options
| Criterion | Polinovel Solar PV Container With BESS | Low-Voltage Containerized BESS | On-Site Built PV + Separate BESS |
|---|---|---|---|
| Grid connection | 6–35 kV medium voltage, direct | Low voltage, needs external step-up | Depends on separately sourced gear |
| System integration | Pre-matched, single block | Container-level, partial | Multi-vendor, integrated on site |
| Conduction loss at scale | Low - lower current at MV | Higher - higher current at LV | Varies by design |
| Built-in storage & dispatch | 5015 kWh, dispatchable | Storage only, add-on dependent | Only if separately specified |
| Off-grid / weak-grid | VF & VSG grid-forming | Limited | Depends on inverter choice |
| Deployment | Containerized blocks, fast | Containerized | Long on-site construction |
| Scalability | 2304 → 3456 kWp by adding blocks | Module-limited | Re-engineered per project size |
Why choose Solar PV Container With BESS
Four reasons Solar PV Container With BESS fits medium-voltage,
dispatchable solar projects that a low-voltage or solar-only product cannot serve.
Medium Voltage Integrated at Source
The step-up station and PCS boost unit are part of the plant, so the grid sees one 6–35 kV dispatchable asset - not a low-voltage system waiting on external transformers and switchgear.
Storage-Grade Engineering
Built by an energy-storage manufacturer with 15+ years and 3000+ systems delivered, the 5015 kWh liquid-cooled LFP core is engineered for long utility duty, not adapted from a solar-only product.
One Platform for Every Grid Condition
VF, PQ, and VSG cover grid-tied, off-grid, and weak-grid in a single system, so the same product fits a utility plant, a mine, and an industrial base without redesign.
Linear, Repeatable Scalability
From 2304 kWp to 3456 kWp by adding pre-matched blocks - one product line across project sizes, with consistent electrical design and faster repeat deployment.
Certifications & Grid-Connection Standards
Every Solar PV Container With BESS is built to recognised energy-storage and grid-connection standards,
with cell, system, shipping, and grid-interface certificates available on request.
UL9540 & UL9540A
UL1741 & IEEE 1547
IEC 62619 & IEC 62933
CE & RoHS
FAQ
Q: What is a Solar PV Container With BESS?
A: A containerized, medium-voltage solar storage power plant that combines a container-based PV array, a step-up transformer station, a 5015 kWh battery container, and a PCS boost unit into one dispatchable asset with 6–35 kV grid output.
Q: How is it different from a standard containerized BESS?
A: A standard containerized BESS stores and discharges electricity. This system integrates the solar generation, medium-voltage step-up, and grid interface as well, so it works as a complete power plant rather than a storage block added to a separate PV system.
Q: Does it help with solar curtailment?
A: Yes. When export limits or oversupply would force the array to spill power, the 5015 kWh battery stores that energy and discharges it later into higher-value hours, turning curtailed solar into sellable, schedulable output.
Q: Why medium voltage instead of low voltage?
A: At the same power, a 6–35 kV output draws lower current than a low-voltage system, which means thinner cables, lower conduction losses, and a direct MV grid connection - without a separate low-voltage stage or an externally procured step-up transformer.
Q: Can it replace diesel at a remote or mining site?
A: In VF (grid-forming) mode it sets its own voltage and frequency to run an off-grid network, supplying firm medium-voltage power that displaces diesel runtime and the reactive power that sensitive equipment needs.
Q: What is the battery capacity and chemistry?
A: A single battery container provides 5015 kWh using LFP (LiFePO4) 314 Ah cells, rated at 1331.2 V, liquid-cooled, with an aerosol fire-suppression system.
Q: Is the system scalable?
A: Yes - from 16 PV containers with a 2.5 MW PCS (2304 kWp, one battery container) up to 24 PV containers with a 5 MW PCS (3456 kWp, two battery containers), by adding blocks rather than redesigning the electrical layout.
Q: How is fire and thermal risk managed?
A: The battery container is liquid-cooled to hold cells in a stable temperature band across the −20 to +50 °C range, and an aerosol fire-suppression system is built in; PCS and transformer stations are IP55-rated for outdoor use.
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