Alternative solutions permitted througspecific regulations when negotiating the used contractual tariffs in order to cash the payment for the consumed electricity

As it happens all over the world, in Romania, the electric power system has also been facing deep restructure, liberalisation, regulation, and privatisation changings. The National Authority for Energy Regulations (A.N.R.E.), issued in 1998, has an essential role under these conditions, as it is a public autonomous national concerning institution, which has juridical personality and it is designed to create and enforce the regulation system. This regulation system is meant to make the electricity department and market function under the efficiency, competition, transparence and customers protection conditions. In addition, the Energy Law, issued in 2003, creates the legislative frame to promote a competitive market economy within the energy department thus both obeying the international obligations assumed by the Romanian state and harmonising the national regulations with the European Union stipulations concerning this activity. The present paper is a presentation concerning the main aspects which govern the major important action of the tariffs negotiation, in large context of electricity supply activity, in Romania. Utilisation of the mathematical calculus models for the cost analysis realisation, and their employment as reference elements, in negotiations, it must be a decisive factor in tariff choice for the consumed electricity invoicing and constitute the final conclusion of paper.