SOLAR STREET LIGHT CONTROLLERS

Solar light sensing system

The system is based on the combination of two approaches to precisely track the sunlight: first, using multiple LDRs (light-dependent resistors) as photo sensors to track the position of the sun by balancing the resistivity using a proportional integral deprival (PID) controller, and the second approach using the time-based control for cloudy days when sunlight is diffused, getting the time GPS coordinates and time to calculate the accurate position of the sun by determining the azimuth and altitude angle. [pdf]

Fully automatic booster solar water pump

The solar-specific hot water booster pump adopts an advanced digital control system and can automatically adjust the operating status according to parameters such as water temperature and water flow.The built-in temperature sensor monitors the water temperature in the solar collector, when the set threshold is reached, the water pump is activated to ensure rapid circulation of hot water.Meanwhile, the flow sensor detects the water flow, when the flow rate is lower than the preset value, it will automatically stop working to avoid unnecessary waste of energy. [pdf]

575wpn type double-sided monocrystalline silicon solar panel

Key features - The bifacial project solution (1,500 V) - High module efficiency (22.26%) - 144 Half-cells, M10 wafer (panel size: 2,278 x 1,134 x 30 mm) - Multi-busbar technology + temperature coefficient of -0.30%/°C increasing the power gain - Robust product design (tests passed: PID resistance IEC TS62804, Salt mist IEC61701, Ammonia IEC62716, Sand and Dust IEC60068) - Proven quality (VDE, IEC/EN 61215 + IEC/EN61730, Safety Class II, CE, UKCA, MCS, Fire Rating Class C, UNI9177 fire class 1) - Up to 25 Years Product Guarantee for the EU and several other countries: 25 years for modules installed on rooftops and 15 years for non-rooftop installations. 12 years globally. - 30 Years Linear Power Output Guarantee: 99% of Pnom are guaranteed in year 1 and 87.50% are guaranteed in year 30. [pdf]

Sierra Leone Lightweight solar Panel Project

State House, Freetown, Thursday, 5 June 2025 – In a landmark step toward sustainable development and inclusive energy access, His Excellency President Dr. Julius Maada Bio is set to officially launch the Salone Off-grid Renewable Energy Acceleration Initiative (SOGREA), a €34 million (approximately 830 million New Leones) solar minigrid project that will significantly advance Sierra Leone’s green energy future. [pdf]

Wickles SolarTech