Premium outdoor solar lights optimized for the sub-tropical maritime conditions of the Bay of Bengal coastline.
As Bangladesh's primary commercial hub and largest seaport, Chittagong (Chattogram) is undergoing unprecedented industrial expansion. Home to the Karnaphuli Export Processing Zone (KEPZ), major heavy industrial belts, shipbreaking yards, and steel mills, the region's energy demands are escalating rapidly. However, the coastal geography introduces severe challenges: high relative humidity (often exceeding 85%), aggressive saline corrosion from the Bay of Bengal, and vulnerability to cyclical cyclones.
For municipal authorities, port administrators, and private estate developers in Chittagong, traditional grid-connected street lighting represents both an operational liability and a major expense. Blackouts and voltage fluctuations frequently disrupt security lighting across key logistics corridors. Consequently, the transition to decentralized, off-grid Split Solar Street Lights has accelerated. Unlike integrated "All-in-One" solar lights, split systems isolate the photovoltaic panel, the battery bank, and the LED luminaire, allowing each component to be configured for maximum resilience against Chittagong's intense tropical monsoon weather and heavy wind loads.
Aligning Chittagong’s local infrastructure projects with international standards for smart, resilient municipal microgrids.
Traditional solar systems rely on PWM controllers, but modern industrial installations in South Asia mandate Maximum Power Point Tracking (MPPT). MPPT algorithms continuously track the solar panel's optimum voltage, boosting conversion efficiency by up to 30%. This is critical in Chittagong, where seasonal cloud cover during monsoon periods drastically reduces direct sunlight hours.
The global shift toward Lithium Iron Phosphate (LiFePO4) battery packs has completely replaced outdated Lead-Acid and Gel options. LiFePO4 cells support over 4,000 charge-discharge cycles at 80% Depth of Discharge (DoD), compared to just 1,000 cycles for lead-acid. Additionally, LiFePO4 is thermally stable at temperatures exceeding 60°C, a prerequisite for Chittagong's scorching pre-monsoon summers.
Global smart city initiatives rely on Zigbee, LoRaWAN, or 4G LTE communication interfaces integrated directly into the street light pole. Operators can remotely monitor real-time battery status, detect LED module failures, and execute customized dimming schedules based on traffic density or pedestrian flow, conserving battery reserves during consecutive rain days.
Architectural and structural lighting options optimized for heavy industrial yards and high-traffic pathways.
An engineering guide to designing and configuring durable off-grid lighting networks for heavy duty marine and industrial zones.
In a split-type system, the solar panel is installed at the top of the pole and can be adjusted horizontally and vertically to face the exact angle for maximum solar collection. In Chittagong, the panel is typically tilted between 20° and 23° facing South to maximize year-round solar capture. The battery box is either placed inside a lockable, IP67-vented pole compartment or buried underground in a waterproof, corrosion-resistant vault. Placing the battery underground maintains a cooler, more stable environment, preventing thermal runaway during intense summer heatwaves.
Separating the light head from the panel also allows for larger, higher-wattage photovoltaic panels (ranging from 120W to 350W+) to be mounted on a single pole. This configuration is impossible with All-in-One systems due to the wind loading limits of integrated chassis structures.
Standard municipal lights rapidly fail in coastal Chittagong due to saltwater aerosol corrosion. To survive, systems must meet rigorous engineering requirements:
Over 20 years of manufacturing excellence in high-performance solar lighting systems.
Yangzhou OneAll Lights Co., Ltd. is a professional manufacturer and exporter specializing in outdoor lighting solutions. Established in 2003 and located in Yangzhou, Jiangsu Province, China, we have over 20 years of experience in the design, development, manufacturing, and supply of high-quality lighting products for customers around the world.
With continuous investment in advanced manufacturing technology, our factory is equipped with modern production facilities, including CNC bending machines, automatic submerged arc welding systems, laser cutting equipment, electrostatic powder coating lines, fluorocarbon painting workshops, and precision testing instruments. Supported by multiple automated production lines and a skilled technical team, we are able to provide efficient production, stable quality, and reliable delivery for projects of all sizes.
Innovation and quality are the driving forces behind our growth. We have established an experienced R&D team dedicated to developing energy-efficient, environmentally friendly, and intelligent lighting solutions that meet the evolving needs of global markets. From product design and engineering to manufacturing and quality inspection, every production process is carried out under strict quality control standards to ensure excellent performance, durability, and long service life.
Our company has obtained ISO9001 Quality Management System Certification, ISO14001 Environmental Management System Certification, CCC, CQC, CE certification, and various product testing reports, demonstrating our commitment to international quality and safety standards.
Over the years, our products have been exported to customers across Southeast Asia, the Middle East, Africa, Europe, South America, and many other regions. With rich experience in international projects, we also provide flexible OEM and ODM services, offering customized solutions tailored to different customer requirements and application scenarios.
At Yangzhou OneAll Lights Co., Ltd., we are committed to the philosophy of "Quality First, Innovation, Integrity, and Customer Satisfaction." We continuously strive to deliver reliable products, competitive solutions, and professional service. Looking ahead, we will continue to create greater value for our partners worldwide and contribute to a brighter, smarter, and more sustainable future.
Engineered to deliver high lumen output, extended autonomy, and superior ingress protection in saline maritime environments.
How to design high-yield municipal and heavy-industrial street lighting layouts.
Chittagong suffers from persistent monsoonal low-pressure systems that can block direct sunlight for up to 5 consecutive days. A properly calculated split solar configuration must design for a minimum of 5-7 days of backup autonomy. The battery package calculation formula is:
By engineering our battery enclosures underground with integrated double-layered foam seals, we maintain internal battery operation temperatures near a stable 25°C, ensuring maximum lifecycle retention even during peak monsoons.
For roads and industrial sites, maximum target lumination must minimize waste energy. Using specialized asymmetric road optics (Type II and Type III distributions), our designs project 100% of generated lumens directly onto the path and work surfaces, eliminating skyward light pollution and reducing the physical power requirements from the solar cell array. Standard specifications for our projects yield up to 180 lm/W system efficiency.
Expert insights into selecting, installing, and maintaining split solar street lights in South Asian climates.
Get in touch with our team today to receive a complete layout design, photometrical simulation, and pricing matrix tailored for your Chittagong municipal or industrial project.
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