Secondary regulation prices on Romanian Balancing Market. A comparation between Actual Wholsale Electricity Commercial Code and proposed (under discussion) Wholsale Electricity Commercial Code GABRIELA UNGUREANU CNTEE Transelectrica SA gabrielaungureanu86@yahoo.com GHEORGHE LAZAROIU University “Politehnica” Bucharest glazaroiu@yahoo.com OANA UDREA University “Politehnica” of Bucharest Oana.udrea@gmail.com VALI VIOLETA CIUCUR Maritime University of Constanta Abstract — Romanian Balancing Market is enforced since July 2005 when Romanian Operator Transmission and System (CN TRANSELECTRICA SA) begun the activity as Balancing Market Operator. Since then, the Romanian Balancing Market was based on the Wholesale Electricity Commercial Code which was published in 2004. After some years of activity and operation of Balancing Market, the Romanian Regulatory Authority proposed a new Wholesale Electricity Commercial Code which is under discussion since 2007. The new Commercial Code proposes some modification especially on the Settlement chapters. The present paper proposes to compare the resulting prices on Secondary Regulation. Index Terms — Commercial Code, Secondary Regulation Prices, I. INTRODUCTION As we know, Balancing Market is in operation since July 1st- 2005, thus creating a legal framework based on competition for buying and selling by TSO balancing energy needed to eliminate imbalances arising in operation and management of network congestions The main purpose of Balancing Market is the cost optimization for the system balancing, imposing selection of energy for upload or download, needed to cover the consumption curve, in order of increasing or decreasing the prices offered by Balancing Market Participants. Balancing Market operation is done using a complex computer platform. In all these years have brought continued improvement of this platform, moreover, C.N.T.E.E. Transelectrica SA started in 2009, a project to purchase a new platform that integrates all the functionality operation of electricity markets are in their own administration, namely: Balancing Market, Ancillary Services Market and Capacity Allocation Market.]1] Romanian Balancing Market was conceived as a tool for balancing Romanian Power System and operates with three types of Regulation Energy: Secondary Energy, Slow Tertiary Energy, and Fast Tertiary Energy. Primary delivered energy is mandatory for all producers (for dispatchable and non- dispatchable generation units) and is not paid on Balancing Market. In Romanian Electricity Market the Ancillary Reserves are paid separately (divided in two parts: regulated quantities with the corresponding prices and non-regulated quantities for which the TSO organizes open auctions) and the TSO releases Dispatch Orders which are paid separately according to the participant daily offers. Exception to this rule is Secondary regulation price, which is established as a marginal price for upward and downward regulation and is paid for realized quantities. II. CALCULATION OF THE SECONDARY REGULATION PRICE ON THE ACTUAL WHOLSALE ELECTRICITY COMMERCIAL CODE Starting with July 2005, Balancing Market has created for the Transport System Operator (TSO) the legal framework, based on competition, for selling and buying the balancing energy, necessary in its activity of eliminating the imbalances arising in system operation and managing the network congestions. 978-1-4799-6557-1/14/$31.00 ©2014 IEEE