The Albanian power system has long benefited from hydro-based generation flexibility. However, the country is subject to hydrologic alteration and a lack of generation diversity. This paper investigates the system-wide and regional electricity demand based on a data-driven approach. Besides, the paper assesses electricity consumption elasticity to temperature. Historical data highlights that electricity self-sufficiency has only been accomplished in 3 out of the last 10 years. On the one hand, the electricity consumption behavior is highly correlated (up to 72.68%) with temperature. On the other hand, the yearly regional electricity demand is related more to population numbers rather than purchasing power or household appliances. Although, such observation is affected by high regional (North part) distribution system losses. The comfort region ranges from 20.3-24.3°C, while the heating and cooling demand saturate at 3 and 32°C, respectively. Lastly, the largest values for the rate of demand increase to the temperature on the heating and cooling region are 29 MWh/°C and 21 MWh/°C, each.

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Transmission System Operational Security is one of the challenging tasks for power engineers and its managers. Transmission Systems are designed to fulfil N-1security criteria during operation. The operation of the transmission system in accordance with the operational security limits, in order to avoid emergency situations, or situations that could lead to partial system shut down or total system black outs, requires the continuous studying of the power system to verify different system scenarios and the fulfilment of the operational security limits for the Transmission System and the entire Power System. One of the most frequent studies as well as indicative ones about the Transmission System is the contingency analysis and fulfilment of N-1 criteria. Usually TSOs use SCADA system and EMS module, which perform a continuous security analysis based on the state estimator results. These analysis can be done, also off-line through power flow software. Contingency analysis require the study of the system before and post contingency, so a considerable volume of calculations has to be done including different scenarios of contingencies lines, generators, or nodes. A fast method to evaluate and rank contingencies which cause overloads in the transmission system is through performance indexes of active and reactive power. This article aims to provide the results of a study on the contingencies of Albania Transmission System. In the recent years the Albanian power system, had significant developments, i.e. the expansion and further penetration of small HPPs into the 110kV network, reinforcement of the 110kV grid through construction of the new lines on this voltage level, construction of 400 kV lines etc. Referring to the fact that Albania is still a net importer of the electricity, the recent development on power sector, under an updated legislation frame work has lead to less dependency from import, consequently the contingency analysis is very important to be done to identify the system constraints.