13-year-old modules become balcony systems in Kassel

ClimateHub Kassel and SoLocal Energy recovered 300 modules that ran for 13 years on the roof of an industrial building in Germany and turned them into 150 balcony systems, pv magazine reported on 24 September 2026. Twelve modules showed minor defects and were discarded; the rest were cleaned and fitted with new connectors. A pair of 325 W modules is offered at EUR 825 to EUR 1,175, depending on the pricing tier.

The disposal context weighs more than the reuse context. IEA-PVPS report T12-31:2025, Status of PV Module Recycling, from September 2025, records 48,395 tonnes of module waste collected across 18 countries in 2022 according to Eurostat, and describes current recycling as high-cost and low-revenue, driven by low volumes, logistics and an undeveloped secondary market.

That gap is where reuse earns its economics. A 13-year-old module still generates; what disqualifies it in a plant is power density per square metre, a constraint a balcony does not have. Reuse moves residual value from an amortised asset to a user who would not buy new, and defers disposal cost.

For plant operators this is a planning signal. Modules replaced in repowering can become a recovery channel rather than an expense, provided inspection and performance records come before dismantling.