The present Ordinance implements the Energy Industry Act of 7 July 2005 (BGBl. I p. 1970). In particular, the Ordinance regulates access to the grid. Considering that the German transmission system operators (TSOs) have to maintain the balance between electricity generation and consumption within their control areas at all times, article 6(2) of the above-mentioned Ordinance requires that a technically needed amount of control reserve (core portion) may need to be provided from within the German Transmission System Operators (TSO) in order to ensure security of supply in each control area, even in case of disturbances in the grid. As such, it is guaranteed that this amount of control reserve is always provided by the own control area. The text consists of 31 articles divided into 7 Parts as follows: General provisions (1); Access to transmissions nets (2); Access to electricity distribution nets (3); Other duties of electricity supply networks distributors (4); Conditions of contracts (5); Powers of the regulatory authority (6); Other provisions (7).