Weibold Academy: TPO’s mass balance reset – ISCC EU 1.2 tightens attribute assignment
A decade ago, tire pyrolysis oil (TPO) was mostly a technical conversation: viscosity, contaminants, refinery compatibility, and whether a complex waste stream could be made reliable enough to enter established fuel and chemical supply chains. Today, that conversation has a second axis: credibility. The last two years have pushed sustainability claims from marketing to enforcement. Regulators are tightening “mass balance” rules; auditors are converging on stricter interpretations; and Tier‑1 offtakers—refineries, fuel suppliers, and chemical majors—are becoming allergic to anything that looks like creative accounting.