The major part of infrastructure and maintenance of society in almost all countries are highly dependent on the energy industry. As modern society is progressing energy need are in creasing more and more. Upstream energy companies are facing challenges of rising commodity prices and fierce competition for reserves and in strive to achieve more business, they extend their operations to remote difficult locations. Meanwhile, downstream energy companies are coping with managing uneven demand, while at the retail level they are seeing greater competition and margin pressures. The purpose of this paper is the evaluation of the profitability, financial and liquidity performances subsequent to the reactions of the energy company management in term of staff and operating expenses. This analysis is done by using Data Envelopment Analysis (DEA) methodology. DEA is highly dependent on the availability of data. The domain selected for the data col lection is the energy companies operating in Spain and Portugal only. The secondary source selected for financial data collection is Sabi. It contains comprehensive information on companies in Spain and Portugal. This research work will enable decision ma kers to have more insight into the financial performance of these companies. The efficiency scores and references help them to choose their benchmark and follow the good practices performed by that company. Data envelopment analysis is further enhanced in this paper using the additional approach to get more deep insight into the input criteria. We have also carry out assessment of criteria between each other and check their effect on the efficiency score of DMU.

The major part of infrastructure and maintenance of society in almost all countries are highly dependent on the energy industry. As modern society is progressing energy need are increasing more and more. Upstream energy companies are facing challenges of rising commodity prices and fierce competition for reserves and in strive to achieve more business, they extend their operations to remote difficult locations. Meanwhile, downstream energy companies are coping with managing uneven demand, while at the retail level they are seeing greater competition and margin pressures. The purpose of this paper is the evaluation of the profitability, financial and liquidity performances subsequent to the reactions of the energy company management in term of staff and operating expenses. This analysis is done by using Data Envelopment Analysis (DEA) methodology. DEA is highly dependent on the availability of data. The domain selected for the data collection is the energy companies operating in Spain and Portugal only. The secondary source selected for financial data collection is Sabi. It contains comprehensive information on companies in Spain and Portugal. This research work will enable decision makers to have more insight into the financial performance of these companies. The efficiency scores and references help them to choose their benchmark and follow the good practices performed by that company. Data envelopment analysis is further enhanced in this paper using the additionalapproach to get more deep insight into the input criteria. We have also carry out assessment of criteria between each other and check their effect on the efficiency score of DMU.