Kuajok City off-grid Solar PV power project

The Kuajok Solar Project is designed as a comprehensive off-grid energy solution, integrating high-capacity solar generation with advanced storage and civil infrastructure to ensure long-term reliability.

Solar PV System and Power Generation

• Module Specifications: The system features 7,000 high-efficiency JAM78S30-605/MR monocrystalline PERC modules.
• Total Capacity: These modules provide a total nominal PV power of 4,235 kWp (4.24 MWp).
• Optimized Orientation: To maximize energy capture, the panels are set at a fixed 13-degree inclination angle.
• Electrical Configuration: The PV array is organized into 291 strings, with 24 modules per string, feeding into 30 combiner boxes.
• Land Utilization: The entire PV array and required spacing occupy approximately 1.96 hectares of land.

Battery Energy Storage System (BESS)

• Storage Capacity: A robust Lithium Iron Phosphate (LFP) BESS provides 17.68 MWh of usable energy.
• Component Detail: The system consists of 800 HVM battery modules, each with a 2.76 kWh capacity.
• Grid Stability: The BESS is essential for managing the average daily load of 16.74 MWh and ensuring stable 24/7 power availability.
• Efficiency: The battery units feature a round-trip efficiency of over 96%.

Power Conversion and Transmission

• Inverter Stations: Two SG2,500HV-MV Turnkey Stations (2.5 MW each) manage power conversion and grid-forming capabilities.
• High Voltage Output: These inverters output directly at 33 kV to allow for efficient transmission over 20 km to Kuajok City.
• Minimal Losses: The design uses 50 mm² ACSR conductors, limiting total line losses to just 2.4% over the transmission distance.

Civil Infrastructure and Site Facilities

• Structural Support: PV mounting structures are made of hot-dip galvanized steel anchored in concrete-cased foundations to resist soil saturation.
• Dedicated Buildings: The site includes a 1,475 $m^2$ battery building, a 140 $m^2$ control room, and two guardhouses located at the NE and NW corners.
• Climate Resilience: Battery rooms are elevated by 0.5m to minimize flooding risks, and the site includes masonry-lined drainage channels and culverts.
• Access and Security: The facility is protected by barbed-wire fencing and CCTV surveillance, with internal access provided by 8m- and 5m-wide gravel roads.
• Support Utilities: On-site facilities also include a groundwater well, a warehouse, and a project office.