Verified surplus and used solar panels, inverters, and equipment marketplace with quality testing and serial verification for budget-conscious installers and DIY projects. Check current efficiency standards to evaluate surplus panel performance. This is where solar installers and solar farms' owners benefit from the professional services to custom-source matching solar panels and other components, like transformers, inverters, battery storage, BESS containers, switchboards, etc. Surplus solar Supply-chain hurdles of the past years, long lead times, and. EU-funded RETRIEVE aims to transform the disposal of end-of-life photovoltaic (PV) panels, a significant environmental challenge, into an opportunity for resource recovery and circular economy in the solar sector.