No, Opal fuel is not a renewable energy source, despite the name sharing similarities with green energy initiatives. It is a conventional petroleum-derived unleaded fuel specifically reformulated to have low aromatic hydrocarbon content. It is refined from fossil crude oil just like standard regular unleaded gasoline, meaning its combustion releases carbon dioxide emissions and it relies on finite geological petroleum reserves. Its primary design purpose is not environmental sustainability or carbon reduction, but rather social harm minimization. By modifying the chemical composition to remove the aromatic compounds that produce a high when inhaled, the fuel prevents petrol sniffing while retaining standard combustion engine performance.