Search for the definition you are looking for.
European Union Natural Gas Directive
The European Parliament and Council Directive 98/30/EC concerning common rules for the internal market in natural gas. Its aim is to create a single Europe-wide gas market by reducing barriers to trade and encouraging new entrants into the market.
Under the terms of the directive, which came into force in August 2000, customers using 25 million cubic metres a year (cm3/y) – about 25% of the market – are able to choose their supplier. The threshold fell to 15 million cm3/y – covering 28% of the market – in 2003.