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Author: Sandra Zirm Sep 30, 2022 12:56:00 PM 3 min read

Regenerated like new: Inhibited EOS® Premium X oil receives IEC 60296:2020 certificate

Electrical Oil Services offers the market recycled insulating oil EOS® Premium in non-inhibited and inhibited grades – both accredited according to IEC 60296:2020.

Frankfurt a.M., 30.09.2022 – Electrical Oil Services (EOS), a brand of HCS Group and a leading supplier of new and recycled insulating oils and associated services, has achieved another milestone in the launch of its sustainable EOS "Closed-Loop" model in Europe: The recycled, inhibited EOS® Premium X transformer oil has been accredited to the new international standard IEC 60296:2020 Type B fully inhibited for "as new oil properties" via Siemens Energy Global GmbH & Co KG. With this certification, Electrical Oil Services meets the even more stringent oxidation stability requirements for inhibited insulating oils (500h test according to IEC 61125C:2018). 


"We are delighted to offer the market our high-quality recycled insulating oil both in non-inhibited and inhibited grades according to IEC 60296:2020," explains Kilian Gerbl, Head of Sales at Electrical Oil Services GmbH, adding: "The accreditation allows us to efficiently support our customers from the energy supply industry on their way to greater sustainability and resource conservation."

EOS® Premium and EOS® Premium X are important developments in recycled insulating oils, offering plant operators and maintenance companies the highest quality of a 100 percent regenerated mineral oil on a sustainable basis with its economic and environmental benefits. 

Current society and political topics are increasing pressure on all industries to make greater efforts to address these developments in the wake of climate change, resource scarcity and supply chain issues. With the EOS® "Closed-Loop" model, Electrical Oil Services supports these efforts by helping to reprocess used transformer oils to as-new quality, thereby reducing the carbon footprint. 





The recycled, inhibited insulating oil EOS® Premium X has been certified according to IEC 60296:2020 Type B and thus meets the specifications for "as new oil properties".

© HCS Group GmbH



About EOS

Electrical Oil Services (EOS) is a key brand of HCS Group GmbH and a leading supplier of unused and reclaimed insulating oils and associated services in Great Britain and continental Europe. EOS specialists have 60 years’ experience in the production and marketing of insulating oils and supply both large and small customers in the electricity distribution industry with tailor-made solutions. For further details please visit


About HCS Group

The HCS Group is a leading international supplier of solutions for high-value hydrocarbon specialties. The Group includes the brands Haltermann Carless, ETS Racing Fuels and EOS. The HCS Group has about 500 employees and is headquartered in Frankfurt am Main, Germany. The company belongs to H.I.G. Europe, a subsidiary of the US private equity company, H.I.G. Capital. For further details please visit


Author: Sandra Zirm

Sandra Zirm is Head of Corporate & Marketing Communications at HCS Group and is responsible for the company's strategic communications, including press relations and sales communications for the Haltermann Carless, ETS Racing Fuels and Electrical Oil Services (EOS) brands. One focus of her work is the development of online communications and Inbound Marketing. T +49 69 695 386 117 E-mail