This paper looks at the Eni energy efficiency program (EEP) for operational and design optimization of the oil ' gas plants.

The Oil ' Gas sector is a significant energy consumer and CO2 emitter and the potential for energy saving can allow this sector to play a major role in achieving the Climate Change policy objectives.

This paper reports on the work undertaken internally by the Company and focuses on the methodology adopted, the main results achieved in the last years and the potential Energy Efficiency (EE) improvements in future years.

Maximization of energy efficiency plant can be achieved by adopting on a regular basis the most important energy efficiency principles and best practices for operation and engineering design. Moreover, considering that a "better performance" starts with a "better design" suitable to mantain energy efficiency in differing conditions across the fields lifecycle, the rules adopted in the earliest phases of the design are basic and can play a very important role to further improve the future EE and operational performance.

The paper includes a qualitative analysis of the more promising and innovative solutions to improve energy efficiency of these oil ' gas facilities.

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