29/04/2026
The industry just confirmed what we've been working on.
SolarPower Europe's EPC Best Practice Guidelines (Version 3.0) – one of the most referenced documents in utility-scale solar development – dedicates an entire section to mounting structure corrosion and explicitly points to DIN 50929-3 as the key standard for assessing soil corrosivity in PV projects.
Here's what the guidelines highlight:
► Soil corrosivity is one of the most challenging variables in PV structure design – driven by a high number of soil parameters that vary across every site
► Galvanised steel coatings may be insufficient for a 30-year lifespan in highly corrosive soils
► Physicochemical variations across a single PV site can cause locally high corrosion rates – even in structures that appear identical above ground
► Additional risks come from leakage and stray currents from PV and BESS installations nearby
This is exactly why we entered a research collaboration with Gdańsk University of Technology – to build a structured, DIN 50929-3-compliant soil assessment service that gives our clients real data, not conservative assumptions.
The standard isn't new. But applying it systematically to utility-scale PV projects – before the first pile is driven – still is.
Has soil corrosivity ever been a deciding factor in your project design? 👇