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Enel Green Power is looking for sustainable and innovative recycling processes to recover Secondary Raw Materials (SRM) from end-of-life PV modules (including early failed modules), aiming at increasing recovery rates, recovery material quality and minimizing waste production.
Enel Green Power is a global leader company in the development and management of energy production from renewable sources, with a total installed capacity of 54 GW based on an integrated portfolio composed of wind, solar, hydroelectric and geothermal technologies.
In the pursuit of the goal of 100% renewable generation, solar photovoltaic (PV) energy will be one of the most relevant contributors to the growth of renewables in the next decade, with a foreseen constant increase of installed capacity. However, Enel Green Power (EGP) strategy also aims at the development and the adoption of innovative solutions able to support the transition towards a more sustainable and efficient way of generating electricity in the long term.
Some researchers show that a significantly growing PV panel waste is expected in the next future. Global installed PV capacity reached around 400 GW at the end of 2017 and is expected to increase more than 10-fold to 4500 GW by 2050. Considering an average panel lifetime of 25 years, the worldwide solar PV waste is anticipated to reach between 4%-14% of total generation capacity by 2030 and rise to over 80% (around 78 million tons) by 2050. (Md. Shahariar Chowdhury et al., Energy Strategy Reviews, Volume 27, 2020, 100431, doi.org/10.1016/j.esr.2019.100431). Although the amount of waste from photovoltaic (PV) panels is expected to grow exponentially in the next decades and between 80% and 90% in weight of PV panels is currently recycled, little research on increasing the efficiency of their recycling process has been carried out so far.
Growing PV panel waste presents a new environmental challenge, but also unprecedented opportunities to create value and pursue new economic revenues. These include recovery of raw material and the creation of new solar PV end of-life industries.
Although some high-quality materials, as glass, can be recovered with standard recycling processes, high-efficient recycling of PV panels can allow to recover also silicon and metals, which are generally lost in base-case recycling. Besides, Europe is highly dependent on metal imports such as Critical Raw Materials (CRM) as Indium, Phosphorus or Silicon and precious metals, as silver or copper. Aiming at reducing the waste amount landfilled and the import dependency on RM of the European economy, PV recycling is the most relevant, and also necessary, way to supply RM from the tremendous mine of PV waste as Waste Electrical and Electronic Equipment (WEEE). The projection of PV waste underscores the reality of a massive emerging market for PV recycling.
Enel Green Power is therefore looking for sustainable and innovative recycling processes to recover Secondary Raw Materials (SRM) from end-of-life PV modules (including early failed modules), aiming at increasing recovery rates, recovery material quality and minimizing waste production.
For questions about the Challenge and your proposal you can contact: EnelOpenInnovabilityChallenges@wazoku.comDescription
Solar energy is crucial and unquestionably the most applicable and affordable solution leading the energy transition and climate change throughout the world. Although Photovoltaic (PV) systems provide zero-emission power generation through their lifespan of 25-30 years, it is crucial to ensure sustainable products over the whole life cycle. While strong efforts have been invested for the manufacturing stage to reduce environmental impacts, the End-of-Life (EoL) of PV devices has not been adequately addressed.
The upcoming PV waste has been estimated with substantial cumulative volumes of ~10 Million tons (Mtons) in Europe and 60-78 Mtons worldwide expected by 2050. Nowadays, 80-90% of PV wastes are recycled, while the remaining 10-20%, that also contains high-value materials, is landfilled, which is not a satisfactory solution, especially in the context of the projected Mtons of PV EoL modules forthcoming.
The baseline recycling scenario is considered representative of average practices in Western European WEEE recycling plants not equipped with specialized technologies for PV recycling. This scenario starts with manual dismantling of the panel’s frames and cables, which are subsequently sorted for recycling. The remaining parts of the panel are then treated with simple techniques (e.g. hammered or ground to partially separate the glass) or directly shredded with other WEEE. Due to the heterogeneity of the PV panel (including glass, encapsulations, silicon cells and multi-polymer backsheet), this process is not able to efficiently separate different materials.
Innovative technologies, that allow the recovery of SRM (secondary raw materials), focusing on Silicon, Indium, Silver and Copper, avoiding disastrous consequences of RM permanent loss due to current landfilled or shredding practices, will provide an answer to this new environmental challenge, giving the opportunity to transform it into a new opportunity to create value.
The benefits due to the recovery of these materials counterbalance the larger impacts of the high-efficiency recycling process. Considering the full life cycle of the panel, the energy produced by the panel grants the most significant environmental benefits. However, benefits due to high-efficient recycling are relevant for some impact categories, especially for the resource depletion indicator. These treatments have to be carefully assessed since they can be responsible for the emissions of air or water pollutants.
Enel Green Power (EGP) is looking for the best – from a sustainability, effectiveness, and cost perspective – available technology or process to recover SRM, focusing on Silicon, Indium, Silver and Copper, from End-of-Life PV modules, in order to define a proper sustainable business chain, under a circular economy perspective. The solution shall be applicable in the most relevant countries in which Enel Green Power is developing its business and business cases shall consider local rules and logistic issues.
Submissions must address the following Solution Requirements.
The solution must:
Additionally, the solutions should:
The submitted proposal should include the following:
SDGsThis challenge provides contribution to the following sustainable development (SDGs) to transform our world:
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