The “Single European Act “(EU,1988) is the foundation of the single European internal market for goods and services within the European Union (EU). The European Commission (EC) moved from the Single European Act and issued a document on “internal energy market” (EU,1988) as a legislative basis in the 1990s that concentrated on an integrated energy market that is competitive but also reduces the cost for the consumer.
Additional Electricity Directives aimed at lining up common set of rules which national governments had to transfer into their national legislation. The directives in 1996, 2003 and 2009 slowly but surely liberalised national electricity markets. The aim was to facilitate increased cross border trading through specific rules encouraging non-discriminatory access to interconnector capacity. The new legislation for national market rules being introduced reduced the entry barriers into national markets.