ADEME

The French Agency for Environment and Energy Management (Agence de l’Environnement et de la Maîtrise de l’Énergie). A public institution established in France in 1990 that provides sustainability-related solutions to businesses, communities and citizens.

Allowance

Emission allowance to be submitted for each ton of CO2 emitted by a facility covered by EC Directive 2003/87/EC.

Anaerobic digestion

Process of decomposition of organic matter in the absence of oxygen. Anaerobic digestion gives off mainly methane.

Arbitrage

In the field of energy, the possibility for an operator to choose at any time between several activities, according to their relative profitability (e.g. burn gas to sell electricity or sell gas and buy electricity from another producer).