Sun-Tracking Photovoltaic System: A Sustainable and Innovative Design

Following the Sun's Path with Fluidity and Efficiency

An evergreen sunflower that follows the sun's path without the need for heavy machinery or considerable energy consumption - this is the inspiration behind the Sun-Tracking Photovoltaic System (APS). Designed by Vincenzo Granata, Anna Dell'Aversana, and the Pietro Liquori Team, this system combines cutting-edge technology with organic movement, creating a unique and efficient solution for harnessing solar energy.

The APS panel is designed to deform according to the position of the sun, much like the movement of a sunflower and its phototropism. The panel material, inspired by the fluid and organic movement of muscles, adapts to the sun's direction, maximizing energy absorption throughout the day.

What sets the APS apart from other photovoltaic systems is its ultra-thin and ultra-light design. The hexagonal shape of the panels, inspired by the tessellation of bee cells, reduces the number of edges while maintaining structural integrity. This innovative design allows for a seamless integration of the APS into urban contexts, making it an aesthetically pleasing and functional addition to any environment.

The realization of the APS involves the use of advanced materials and technologies. The panels are divided into six segments of electroactive polymer (EAP) that deform at low electric charges, enabling the fluid movement of the system. A deposition of CIGS nanoparticles, similar to ink, forms the photovoltaic part of the panel, adapting to the flexible substrate. To protect the EAP and CIGS layers, an ultrathin and clear layer of the latest generation flexible glass, known as Willow Glass, is applied.

The APS panel's interaction with the sun is facilitated by a polymer capable of changing its structure when electricity passes through it. This lightweight "muscle" allows the panel to smoothly and quickly deform, following the light source and maximizing energy absorption.

The APS project began in September 2013 and was completed in January 2014 in Naples. The designers drew inspiration from heliotropic systems found in nature and aimed to create a PV system that is recyclable, light, and modular, seamlessly integrating into urban environments.

The APS design faced several challenges, particularly in the research and development of materials and their symbiosis. Through extensive experimentation and expertise in smart materials, the design team successfully overcame these challenges, resulting in a groundbreaking and sustainable solution for solar energy harnessing.

The Sun-Tracking Photovoltaic System was awarded the Silver A' Design Award in 2014 in the Energy Products, Projects, and Devices Design category. This prestigious accolade recognizes the system's outstanding expertise, innovation, and technical characteristics. The APS design showcases a remarkable level of excellence, introducing positive feelings, amazement, and wonder.