International Journal of Engineering and Technology

Electric supply industry throughout the world have been restructured to introduce competition among the market participants and bring several competitive opportunities. The structure of power industry is moving towards deregulatory environment from the regulatory environment. Under this deregulatory, there are many technical issues need to be addressed. In this paper, one such technical issue handled carefully is the Available Transfer Capability (ATC). ATC is the amount of maximum additional power transfer between two control areas (source and sink) that is available without violating thermal overloads. Here ATC is estimated for normal and contingency modes using linear sensitivity factors according to the security and reliability requirements. Simultaneous bilateral transactions have been done on IEEE-30 bus standard system for the assessment of ATC under MATLAB environment. From the results, it is computed that ATC is determined with less computation burden and this study will be useful for the present open access electricity market.