30W 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]

The cost of solar panels

While the upfront costs of solar panels have dropped by over 70% in the past decade, a comprehensive lifecycle analysis includes several key components: initial purchase and installation ($15,000-$25,000 for an average home system), ongoing maintenance (roughly $300-500 annually), inverter replacement (typically needed once during the system’s lifetime), and eventual decommissioning costs. [pdf]

Solar Energy Storage Cabinet System Introduction

This article will introduce in detail how to design an energy storage cabinet device, and focus on how to integrate key components such as PCS (power conversion system), EMS (energy management system), lithium battery, BMS (battery management system), STS (static transfer switch), PCC (electrical connection control) and MPPT (maximum power point tracking) to ensure efficient, safe and reliable operation of the system. [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