Swiss PV Circle lays the foundations for the reuse of solar modules

(CONNECT) Around half of the photovoltaic modules that currently end up in the waste stream are basically still functional. The Over the past year and a half, the Swiss PV Circle project has therefore developed practical tools, technical principles, market analyses and policy recommendations to promote the reuse of PV modules, as detailed in a press release. Behind the project are SENS eRecycling, Swissolar and the Bern University of Applied Sciences.

Political recommendations focus on financial incentives, such as a reuse contribution similar to existing recycling contributions. In addition, harmonisation options such as a nationwide label and certification system are required in order to make quality visible and create trust in used modules. Switzerland-wide harmonised approval practices for handling used modules and systematic data collection during the installation and dismantling of solar systems are reducing further hurdles, the press release states.
 
Practical tools such as a platform prototype with an underlying data model make it possible to assess the appropriate closed-loop strategy for used modules at an early stage. The project calculated a return of 23,000 to 90,000 tons of used photovoltaic modules by 2050. 

The project's market analysis found that the economic viability of reused modules is still limited due to low new prices. Used modules are currently mainly used in smaller applications. Attractive prices, tested quality and a high residual output of the modules are therefore needed to achieve broader acceptance.

The Swiss PV Circle project aims to reduce future waste volumes by increasing the secondary use of modules. To this end, SENS eRecycling, Swissolar and Bern University of Applied Sciences are working together with partners from the Swiss PV industry. ce/yes