Extending the lifetime of photovoltaic (PV) modules is one of the most pressing challenges of our time. As PV technology becomes more and more established as a renewable source of electricity, it is crucial that PV modules can generate electricity reliably over a long lifetime and are sustainable in terms of energy, environmental impact and investment. One approach to this is the introduction of new PV technologies with increased performance and service life. A second approach is to significantly extend the service life of existing PV modules by reusing, repairing or refurbishing them.
While recycling is the standard strategy for end-of-life PV modules in Europe, strategies and methods for reuse and repair are still emerging. Particularly, the repair of early damage or faults after extended operation is often economically advantageous. Damage to the backsheet, which is one of the most common causes of module failure alongside glass breakage and cell degradation, already showed a high repair potential in the predecessor project “PVRe2”.
Main objective
The main objective of the project is to develop an environmentally friendly coating solution for the repair of backsheets (to extend the service life) of PV modules.
Solutions are being developed for the following three scenarios:
Scenario 1: (Preventive) restoration of the insulation resistance of PV modules
Scenario 2: Repair of defective backsheets (cracks)
Scenario 3: Repair of transportation and assembly rejects (mechanical damage to the backsheets)
Additional objective
A further objective is the research and development of business models for an efficient repair infrastructure, i.e. an optimized application methodology and logistics for the coating according to the three scenarios mentioned above.
Approach 1: Local application to mounted PV modules in the field (“spray can”)
Approach 2: Centralized, automated coating of dismantled PV modules (“2nd Life PV”) in the field (mobile container with coating system) or at an external facility.
Funding: FFG / FTI-Initiative Kreislaufwirtschaft – 3. AS (2023)
Project Consortium
- Lead: OFI Österreichisches Forschungsinstitut für Chemie und Technik
- PCCL Polymer Competence Center Leoben
- KIOTO Solar
- ENcome Energy Performance
