Repsol's path to sustainable electrification of industrial processes

By replacing a steam turbine with an electric motor, Repsol Olefins has managed to reduce its energy consumption by 25% and its CO₂ emissions as part of its commitment to sustainable electrification.
How it all began

One goal: reduce CO₂ emissions and increase sustainability

With thousands of employees and more than 70 years of experience, the Repsol Industrial Complex in Puertollano generates a wide variety of products in its expansive facilities. Energy efficiency is one of the key issues in day-to-day operations of this complex, which is why the goal was set to reduce CO₂ emissions and produce in a more sustainable way.

Repsol has set a goal of zero net emissions by 2050, and is counting on Siemens to achieve this ambitious target. Based on our innovative technology, they electrified their gas compressor to increase energy efficiency and reduce their CO₂ emissions by 68,000 tons/year. The collaboration between Repsol and Siemens represents a commitment to sustainability by using electric power from renewable energy sources, so that they can produce in a far more environmentally friendly way.

The electrification of our compressor at the Puertollano Olefins Unit replacing the previous steam turbine is without a doubt an important milestone in this process.
Eloy Pareja, Director of Production of the Chemical Unit of the Puertollano Repsol Industrial Complex

"Our SINAMICS PERFECT HARMONY GH180 medium voltage drive provides the power and performance required in this project: 8.25 Megawatts at 5800 revolutions per minute. To get an idea of the magnitude of this data, this represents the daily consumption equivalent to a town with 3000 residents."

Marcos Blanco, Siemens Large Drives, Head of Medium Voltage Frequency Converters

"We needed an efficient solution, with a high degree of technology that would ensure a high system availability. After the replacement, our goal was for the gas compressor to operate continuously for at least five years. And Siemens Large Drives was able to supply us with this technology."

Conchita Montero, Project Manager P-64 Repsol

A huge technological and logistical challenge

The project has been a huge challenge. First and foremost, the turbine had to be replaced by an electric variable speed drive – representing state of the art technology and innovation. And secondly, the project had to integrate a high-speed motor from the Siemens factory in Berlin with a frequency converter from the New Kensington plant (United States), highlights Ricardo Andrino, Project Manager Project P-64 at Siemens Large Drives.

"Siemens' proposal was convincing from the start because it included full testing in the factories, witnessed by customer personnel. And of course, the Siemens Large Drives Digital Portfolio has given us the added value that we needed."

Luciano Santiago, Electrical Engineering manager of Repsol’s Engineering Department

The Siemens drive system is redundantly configured so that there are no unscheduled downtimes. Furthermore, the innovative SIDRIVE IQ digitization technology allows Repsol to remotely monitor its frequency converter. This digital platform enables real-time access to all the data captured from the frequency converter. This data is continuously evaluated in the cloud and improves decision-making in an IoT ecosystem.

On the road to sustainability

Building an environmentally friendly future

The collaboration between Repsol and Siemens has meant that Repsol can produce more efficiently, more sustainably and in a more environmentally friendly fashion.
The launch of this ambitious project has opened the doors to a very relevant market thanks to the European Union's sustainability policy. We are very proud to have become a reference partner for Repsol and we hope to be able to win new projects in the near future.
Luis Pérez Piñeiro, CEO of Siemens Large Drives, Spain

This represents a milestone when it comes to sustainability and environmental protection, which will generate synergies to sustain the future of our country and environment.


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