---
title: Case Study - Multi-sites energy efficiency audit in the framework of the ISO 50001 standard
description: Axens was awarded a multisites energy efficiency survey including 2 complex refineries.
image: https://resources.axens.net/hubfs/Landing%20Pages/Resources/Case%20Study/Thumbnails/Thumb_Axens_CS_ENAP.jpg
---

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 Case study

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### Multi-Sites Energy Efficiency Audit in the Framework of the ISO 50001 Standard

- Axens was awarded a multisites energy efficiency survey including 2 complex refineries.
- With a tailor-made methodology and specific software, Axens successfully carried out this global study giving rise to energy efficiency practical recommendations for the customer. After a 7-step study, 74 solutions were identified, out of which 27 were included within the customer Action Plan with low payback time.
- The solutions proposed lead to a series of improvements: better thermal integration in the units, reduced steam losses, increased furnace and boiler efficiencies, and optimization of the operating.
- Quick wins had a potential for saving of around 15% of total energy consumption resulting in more than 40 million US dollars savings per year.

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