Case C-205/08: Judgment of the Court (Second Chamber) of 10 December 2009 (Reference for a preliminary ruling from the Umweltsenat — Austria) — Umweltanwalt von Kärnten v Kärntner Landesregierung (Reference for a preliminary hearing — Article 234 EC — Concept of national court or tribunal — Admissibility — Directive 85/337/EEC — Environmental impact assessment — Construction of overhead electrical power lines — Length of more than 15 km — Transboundary constructions — Transboundary power line — Total length exceeding the threshold — Line mainly situated in the territory of a neighbouring Member State — Length of national section below the threshold)