A new industry test has uncovered substantial differences in how wallboxes handle photovoltaic surplus charging. The "Wallbox Inspection 2025" study, published by pv magazine Deutschland, reveals that current-generation charging units vary significantly in their ability to efficiently charge electric vehicles with excess solar power. The findings are expected to influence purchase decisions for contractors and end customers alike. Performance disparities in PV integration could impact the economic viability of home charging installations combined with solar systems.