Why Choose GNEE Electric?
Factory Pre-assembled Plug & Play Design
Adopt prefab substation and box-type substation structure, cutting 70% site installation and commissioning cost. All PV all-in-one unit and energy storage all-in-one unit pass strict factory FAT test.
Dual Professional PV & ESS Integrated Solution
We supply customized PV step-up substation matched with solar inverter duty transformer, alongside BESS PCS integrated compact substation equipped with energy storage converter booster machine. Our product portfolio covers containerized PV substation and full containerized BESS & ESS system.
Global Certified & Harsh Environment Resistant
Our three-phase compact containerized substation owns IP54/IP66 protection grade and CE & IEC certifications, running stably in global solar power stations and energy storage power station projects.
【START HERE – Get Your Custom Layout in 24h →】
Tell us your MW capacity, grid voltage & climate condition, we’ll reply with a tailor-made compact substation solution and preliminary cost estimate within 24 hours.
Get Custom Compact Substation Solution & Quotation
Product Series Core Advantages
PV Compact Substation Benefits
- Integrated Design: Combines a PV inverter, step-up transformer, and other components to accommodate multi-station scenarios
- Intelligent Zone-Based Cooling: Forced ventilation combined with intelligent temperature control prevents thermal coupling and extends equipment lifespan
- High Protection Rating: IP54, C4-M corrosion-resistant, and rain- and dust-proof construction, suitable for various extreme outdoor environments
- Smart O&M: Multi-protocol compatibility, support for EMS remote management, and a modular design that simplifies maintenance and reduces O&M costs
Energy Storage Compact Substation Benefits
- Integrated Design: The step-up transformer and converter are integrated, simplifying installation and saving space
- Intelligent Cooling: Top-mounted centrifugal fans provide forced ventilation, combined with intelligent temperature control and zoned cooling to prevent thermal coupling, ensuring stable operation under high loads
- High Protection Rating: IP54, C4-M corrosion-resistant, and rain- and dust-proof construction, suitable for various extreme outdoor environments
- Smart O&M: Multi-protocol compatibility, support for EMS remote management, and a modular design that simplifies maintenance and reduces O&M costs
【💡 What if you could cut 2 months from your project schedule?】
Our prefabricated units arrive on site fully wired and tested – you only need foundation + final connection. Many EPCs save over 70% on-site labor and finish grid connection within 2 weeks. Want a time-cost simulation for your project?
Contact Us For A Free Schedule Comparison.
PV Compact Substation Parameters
| All-in-one Unit Rated Power |
3.15MW |
3.3MW |
4.4MW |
6.6MW |
8.8MW |
9MW |
| Transformer |
Isolation mode |
Oil-Immersed Transformer |
| Rated power |
3150kVA@45°C
3300kVA@40°C |
3300kVA@45°C
3450kVA@40°C |
4400kVA@45°C
4620kVA@40°C |
6600kVA@45°C
6930kVA@40°C |
8800kVA@45°C
9240kVA@40°C |
9000kVA@45°C
9450kVA@40°C |
| Impedance |
6% |
6% |
8% |
9% |
9% |
10% |
| Transformer vector |
Dy11 |
Dy11y11(Dy11 optional) |
| LV/MV voltage |
0.69kV/33kV(10kV~33kV optional) |
| Efficiency |
IEC60076-20, Level 2(Customizable) |
| Temperature-rise |
top-layer oil Temperature rise: 60K |
| Cooling method |
ONAN/ONAF(Intelligent forced air cooling) |
| RMU mode |
DCV(DV,CV,CCV etc. optional) |
| High-voltage switch |
40.5kV, 630A, 31.5kA/s |
| CT |
40.5kV |
High-
Voltage Room |
Indicator |
DXN-Q1, AC/DC220V |
| Electromagnetic Lock |
DSN-AMZ/DSN-AMY |
| Heating Plate |
Rated power: 200W (customizable), rated voltage: 220V |
| Cabinet Light |
LED Type, AC220V |
| Transfer Switch |
LW38A-16D04/16/2 (Remote / Stop / Local) |
| Miniature Circuit Breaker |
AC220V 63A C6/2P |
| Temp & Hum Controler |
With sensor and heater control function (customizable) |
| Digital Ammeter |
Input current: customizable, with display and alarm function (optional) |
| Smoke Detector |
AC220V (customizable), for fire detection |
| Temperature Detector |
AC220V (customizable), for temperature monitoring |
| Auxiliary transformer |
Customizable |
High-
Voltage Room |
Low-voltage switch |
400V, 250A, 4P |
| Communication Protocol |
IEC104(IEC61850 optional) |
| Low-voltage room |
UPS |
Rated power 1kVA(1kVA~2kVA optional), Backup time 30min(30min~120min optional) |
| CT |
Rated voltage: 0.66kV, Accuracy class: 0.5/5P, Rated burden: 5VA (customizable) |
| Low Voltage Fuse |
Rated current: 125A (customizable), with base |
| Surge Protective Device |
Rated voltage: 385V, 3+1 mode (customizable) |
| Ethernet Switch |
Port configuration: 8×Gigabit RJ45 + 4×Gigabit SFP (customizable), industrial grade |
| DC Power Supply Module |
24V 120W (customizable) |
| Centrifugal Fan |
Matched with system cooling demand |
| Capacitor |
Matched with fan or reactive power compensation demand |
| Battery |
12V lead-acid battery (capacity customizable) |
| AC/DC MCB |
32A/2P |
| 3-Pin Plug |
10A, 250V |
| Temp & Hum Controller |
With sensor and heater control function (customizable) |
| Heater |
Rated power: 200W (customizable), rated voltage: 220V |
| AC Contactor |
Rated voltage: 220V, rated current customizable |
| Auxiliary Relay |
Plug-in type, rated voltage: 220V, with base |
| Distribution Terminal |
250A |
| MCB |
Rated current: 6A~32A (customizable), 2/3/4-pole optional |
| Moulded Case Circuit Breaker |
Rated current: 125A~250A (customizable), 4-pole, rated voltage: 230V (customizable) |
| Multifunction Meter |
Rated voltage: 400V, accuracy class: 0.5S, input current: 1A/5A (customizable) |
| Dimensions(mm) |
6058×2438×2896 |
12192×2438×2896 |
| Ambient temp |
-35℃~60℃(-45℃ derating) |
| General parameter |
Max. altitude |
4000m(>1000m derating) |
| Humidity |
0~100% |
| Corrosion Resistance |
C3H(C4~C5 optional) |
| Ingress Protection |
IP54 (MV Station), IP68 (Transformer) |
| Standard compliance |
IEC 62271-100, IEC 62271-103, IEC 62271-200, IEC 60076 |
Energy Storage Compact Substation Parameters
| All-in-one Unit Rated Power |
2.5MW |
3.45MW |
5MW |
6.25MW |
6.9MW |
10MW |
| Transformer |
Isolation mode |
Oil-Immersed Transformer |
| Rated power |
2500kVA@45°C
2625kVA@40°C |
3450kVA@45°C
3625kVA@40°C |
5000kVA@45°C
5250kVA@40°C |
6250kVA@45°C
6600kVA@40°C |
6900kVA@45°C
7250kVA@40°C |
10000kVA@45°C
10500kVA@40°C |
| Impedance |
6% |
6% |
8% |
9% |
9% |
10% |
| Transformer vector |
Dy11 |
Dy11y11(Dy11 optional) |
| LV/MV voltage |
0.69kV/33kV(10kV~33kV optional) |
| Efficiency |
IEC60076-20, Level 2(Customizable) |
| Temperature-rise |
top-layer oil Temperature rise: 60K |
| Cooling method |
ONAN/ONAF(Intelligent forced air cooling) |
| RMU mode |
DCV(DV,CV,CCV etc. optional) |
| High-voltage switch |
40.5kV, 630A, 31.5kA/s |
| CT |
40.5kV |
High-
Voltage Room |
Indicator |
DXN-Q1, AC/DC220V |
| Electromagnetic Lock |
DSN-AMZ |
| Heating Plate |
Rated power: 200W (customizable), rated voltage: 220V |
| Cabinet Light |
LED Type, AC220V |
| Transfer Switch |
LW38A-16D04/16/2 (Remote / Stop / Local) |
| Miniature Circuit Breaker |
AC220V 63A C6/2P |
| Temp & Hum Controler |
With sensor and heater control function (customizable) |
| Digital Ammeter |
Input current: customizable, with display and alarm function (optional) |
| Smoke Detector |
AC220V (customizable), for fire detection |
| Temperature Detector |
AC220V (customizable), for temperature monitoring |
| Auxiliary transformer |
Customizable |
High-
Voltage Room |
Low-voltage switch |
400V, 250A, 4P |
| Communication Protocol |
IEC104(IEC61850 optional) |
| Low-voltage room |
UPS |
Rated power 1kVA(1kVA~2kVA optional), Backup time 30min(30min~120min optional) |
| CT |
Rated voltage: 0.66kV, Accuracy class: 0.5/5P, Rated burden: 5VA (customizable) |
| Low Voltage Fuse |
Rated current: 125A (customizable), with base |
| Surge Protective Device |
Rated voltage: 385V, 3+1 mode (customizable) |
| Ethernet Switch |
Port configuration: 8×Gigabit RJ45 + 4×Gigabit SFP (customizable), industrial grade |
| DC Power Supply Module |
24V 120W (customizable) |
| Centrifugal Fan |
Matched with system cooling demand |
| Capacitor |
Matched with fan or reactive power compensation demand |
| Battery |
12V lead-acid battery (capacity customizable) |
| AC/DC MCB |
32A/2P |
| 3-Pin Plug |
10A, 250V |
| Temp & Hum Controller |
With sensor and heater control function (customizable) |
| Heater |
Rated power: 200W (customizable), rated voltage: 220V |
| AC Contactor |
Rated voltage: 220V, rated current customizable |
| Auxiliary Relay |
Plug-in type, rated voltage: 220V, with base |
| Distribution Terminal |
250A |
| MCB |
Rated current: 6A~32A (customizable), 2/3/4-pole optional |
| Moulded Case Circuit Breaker |
Rated current: 125A~250A (customizable), 4-pole, rated voltage: 230V (customizable) |
| Multifunction Meter |
Rated voltage: 400V, accuracy class: 0.5S, input current: 1A/5A (customizable) |
| Dimensions(mm) |
6058×2438×2896 |
12192×2438×2896 |
| Ambient temp |
-35℃~60℃(-45℃ derating) |
| General parameter |
Max. altitude |
4000m(>1000m derating) |
| Humidity |
0~100% |
| Corrosion Resistance |
C3H(C4~C5 optional) |
| Ingress Protection |
IP54 (MV Station), IP68 (Transformer) |
| Standard compliance |
IEC 62271-100, IEC 62271-103, IEC 62271-200, IEC 60076 |
Wide Application Scenarios
Photovoltaic Sector
Focusing on PV All-In-One unit and system solution. Our products adapt to wide-range illumination and voltage fluctuations, resisting wind and sand, withstanding extreme temperatures, and featuring low losses. The All-In-One unit design with modular layout, suitable for both distributed and centralized photovoltaic power station.
Energy Storage Sector
Focusing on energy storage transformers and energy storage all-in-one units, meeting diverse energy storage system requirements with high reliability and impact resistance. Flexibly applicable to power generation, grid, and user-side energy storage projects, enabling efficient energy conversion and reliable grid integration.
PV Compact Substation Application Scenarios
PV compact substations are the grid-connected boosting equipment for photovoltaic power generation systems. Applied to centralized utility-scale ground photovoltaic power stations and distributed projects including industrial and commercial rooftop PV systems, realizing photovoltaic power boosting delivery and grid-connected access for photovoltaic power plants.
Energy Storage Compact Substation Application Scenarios & Commercial Uses
Target customers cover grid operators, large manufacturing plants and new energy investment developers.
- Peak shaving and valley filling: Realize electricity cost reduction and revenue arbitrage through charging during low valley electricity price and discharging in peak price period.
- Renewable energy consumption: Match photovoltaic and wind power facilities to consume surplus fluctuating new energy output and stabilize grid-connected power quality.
- Grid ancillary service: Provide grid frequency regulation and voltage stabilization service for commercial grid auxiliary business in Europe, Australia and North America markets.
- Off-grid microgrid & backup power supply: Build independent power supply microgrids for remote mining zones and islands; supply emergency standby power for industrial parks and data centers against blackout risks.
【Already running a PV or BESS project?】 We have delivered over 200+ compact substations for utility-scale projects worldwide (including 200MW/400MWh and 1000MW/2000MWh storage stations). Ask us for case studies and performance data that match your project scale – we will send you real operation feedback.
Get Project-matched Data Reports
Typical Cases
200MW/400MWh Energy Storage Project
1000MW/2000MWh Energy Storage Project
100MW/200MWh Energy Storage Project
200MW/400MWh Energy Storage Project
Distributed rooftop PV projects
Prefabricated Compact Substation VS Traditional Discrete On-site Substation Construction
The table below intuitively shows the core gaps between our factory prefabricated compact substation and the conventional discrete building mode.
| Comparison Item |
Containerized Integrated Compact Substation |
Traditional Split On-site Assembled Substation |
| Floor Space Occupied |
Overall space saving 50%~70%; integrated layout of transformer, high and low voltage cabinets inside one box, no extra civil foundation for separate equipment |
Large overall land occupation; transformer room, high voltage room, low voltage room need independent civil buildings and isolation intervals |
| On-site Construction Period |
Only foundation pouring + integral hoisting & fixing, on-site construction finished within 3~7 working days |
Civil construction, equipment hoisting, separate wiring and debugging take 30~60 working days |
| Field Wiring Workload |
All internal wiring completed and tested in factory; only external cable access work needed on site, wiring workload reduced by over 70% |
Massive internal and external cable laying, wiring, crimping work finished completely on site, heavy construction workload |
| Total Project Construction Cost |
Lower comprehensive cost. Cut labor cost, civil engineering cost and site management expense; one-time factory integration reduces hidden rework cost |
High total investment. Multiple civil buildings, long-term on-site construction teams, high site management and temporary construction expenses |
| Daily Operation & Maintenance Difficulty |
Centralized layout, unified EMS monitoring interface; modular components, convenient fault location and component replacement, low maintenance difficulty |
Equipment scattered in multiple independent rooms, scattered monitoring points; fault troubleshooting needs to check multiple areas one by one, high maintenance difficulty |
| Whole-grid Connection Cycle |
Short overall cycle. Factory pre-testing + fast on-site installation, meet grid access conditions quickly, grid connection within 1~2 weeks after arrival on site |
Long grid admission cycle. Multiple acceptance links for civil engineering + equipment installation + field debugging, grid connection often takes more than 2 months |
GNEE Electric Integrated Turnkey Solution (PV & PCS Station)
GNEE Electric supplies complete PV TURNKEY SOLUTION and PCS Turnkey Station integrated supporting system for global photovoltaic power stations and energy storage power stations. Our prefabricated compact substations precisely fix multiple prominent pain points brought by traditional scattered substation construction mode, with targeted product advantages matching the actual demands of EPC contractors and project investors.
Matching Advantages for Industry Common Pain Points
- Pain point：Traditional substation needs massive civil construction, field wiring and on-site assembly, leading to ultra-long overall construction period
- Advantage：All internal assembly, wiring and overall debugging are finished inside the factory. On-site work only includes foundation laying and integral hoisting installation. The construction cycle of PV TURNKEY SOLUTION and PCS Turnkey Station can be shortened from two to three months to within one week, greatly accelerating the whole project progress.
- Pain point：Overseas on-site construction labor cost is high, field construction personnel management brings extra hidden expenditure
- Advantage：Cut more than 70% of field construction workload. Effectively control the total investment of overseas power station projects, reduce labor expense and on-site management cost for EPC enterprises.
- Pain point：Dispersed field debugging is easily affected by site environment, with high failure rate of grid connection acceptance
- Advantage：Each set of equipment passes comprehensive FAT factory test before delivery, completing simulated grid operation linkage test in advance. Stable performance guarantees smooth grid access of both PCS turnkey stations and PV turnkey solutions, avoiding rework losses caused by unqualified debugging on site.
- Pain point：Equipment exposed to desert wind sand, coastal salt fog and high-temperature rainy environment is prone to aging and failure
- Advantage：Equipped with IP54 protection grade and C4-M anti-corrosion structure, matched with intelligent zoned heat dissipation system. The whole unit can run stably in various severe working conditions, lowering the frequency of equipment failure in the later operation period.
- Pain point：Dispersed equipment layout brings difficult fault troubleshooting and complicated daily maintenance work
- Advantage：Integrated modular layout cooperates with unified EMS centralized monitoring platform. Staff can quickly locate faults and replace damaged components, lowering the operation and maintenance difficulty of power stations for asset owners.
【🔥 FINAL CALL – GET YOUR TURNKEY QUOTE NOW】
Don't let traditional substation bottlenecks delay your project. Whether you need a single unit or a full turnkey station (PV + BESS), we offer:
✅ Free engineering consultation & layout design
✅ Transparent pricing with no hidden fees
✅ Full documentation for customs and grid approval
✅ 12-month warranty + remote support
【 SEND INQUIRY】
– Attach your project brief (MW, voltage level, site photos) and we will send you a preliminary datasheet and budget reference immediately.
Qualification, Factory Test and Export Packaging Support for Turnkey Projects
| Classification |
Service Content for Turnkey Project Delivery |
| International Qualification Documents |
Products abide by IEC 60076, IEC 62271 series standards and CE certification.
We can provide EN10204 3.1 material certificate, official type test report, partial discharge test and temperature rise test data, which meet the bidding review and project acceptance standards of PV TURNKEY SOLUTION and PCS Turnkey Station projects.
|
| Whole-process FAT Factory Inspection |
Implement transformer electrical performance test, high-voltage protection action test, temperature aging test and overall EMS joint debugging one by one.
All finished products can only be delivered after passing the full simulation operation inspection of power station working conditions.
|
| Marine Export Packaging Scheme |
Adopt rust-proof coating plus surface protection film for cabinet body, with anti-collision steel reinforcement at four corners.
Internal electrical devices are fixed with shock-absorbing fixtures, and built-in drying agents resist moisture erosion during long-distance sea transportation.
Standard marking and fixed binding mode can ensure intact transportation of turnkey equipment to overseas destinations.
|
Whole-cycle Turnkey Service System
Pre-sales Service
According to the installed capacity of photovoltaic power station, BESS configuration parameters, local altitude, ambient temperature and regional grid access standards, formulate personalized PV TURNKEY SOLUTION and PCS Turnkey Station matching schemes free of charge, and provide official quotations and downloadable technical datasheets.
In-sales Service
Feed back real-time production pictures and factory test videos during the production process. Check all technical parameters twice before delivery and synchronize complete FAT test reports. Sort out a full set of customs clearance documents and offer professional container loading suggestions for the sea transportation of turnkey equipment.
After-sales Service
Provide 24-hour online remote support for EMS platform and PCS system debugging and fault elimination. Arrange professional engineers to go overseas for on-site installation guidance and grid-connected operation training upon demand. The whole machine enjoys a 1-year warranty period. Supply vulnerable spare parts globally rapidly to shorten equipment downtime, and offer long-term operational optimization suggestions for the stable operation of your turnkey station.
Ready to power your PV or ESS project with a reliable compact substation?
Click to send your inquiry – include your desired capacity, voltage, and application (PV / BESS / both). We will return:
- Customized single-line diagram
- Budgetary quotation (FOB/ CIF)
- Delivery lead-time
- List of included accessories and optional upgrades
REQUEST A FREE QUOTE
We reply within 8 hours – let’s accelerate your project together.
