12W SOLAR STREET LIGHT

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]

German solar street lighting system
Environmentally friendly lighting using solar power - in winter, when there is little sun, the light automatically switches to mains grid power.For illuminating streets, yards, driveways, deliveries, access roads, waste collection points, car parks, building yards, recycling centres.Mounted on a round metal pole or with a wall bracket at an extra charge.All-In-Two luminaires represent a good compromise between compact design for normal lighting poles and reliability.The solar module can be rotated separately from the luminaire in the direction of the sun.The brightness is comparable to a 125W mercury vapour lamp or 70W sodium vapour lamp.In winter, we recommend switching down the intensity of the basic lighting to ensure sufficient recharging even at dark weather. [pdf]

Glass solar Power Station Cooperation Project
The project, applied for and led by Associate Researcher Zhang Chuncheng of IEECAS as the Chief Scientist, has brought together top scientific research institutions from countries such as the United States' NREL, Germany's DLR, Spain's CIEMAT, and France's CSP Energies, as well as leading domestic enterprises such as Northwest Electric Power Design Institute Co., LTD, of China Power Engineering Consulting Group and Zhejiang KeSheng Technology Co., Ltd., demonstrating a high level of international cooperation. [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]
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