Judgment of the Court of 28 April 2016 (C‑191/14, C‑192/14, C‑295/14, C‑389/14 and C‑391/14 to C‑393/14) made market participants anxious.

This is on account of concerns that the legal certainty of the carbon market has been undermined.

The ruling applies to the EU ETS cross-sectoral correction factor (CSCF).