Trusted purity in a new circular economy

It’s how we do it that makes us different


Electrical Oil Services – a leading supplier of insulating oils and associated services throughout Europe.

Electrical Oil Services (EOS) is a leading supplier of both regenerated and unused electrical insulating oils and associated services in 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 supply industry with tailor-made solutions.

With the EOS “Closed-Loop” model, Electrical Oil Services supports network operators in meeting the requirements with regard to the circular economy. This brings benefits for companies and the environment.

What we do

In the early days of Electrical Oil Services (EOS), we worked to improve our logistics services as we established our own contract to meet our customers’ stringent requirements. During this time, we also made significant improvements to our product quality as major enhancements were made to our reclamation plants. More recently developments have focussed on the Field Services business. We have several mobile regeneration units (MRU) to add mobile regeneration to our service portfolio.

Our story

British post WW II austerity meant there was no foreign exchange availability for the purchase of new oil. However, aged oil in overloaded transformers needed replacing. The answer was to take the used oil and restore its original properties. As the UK’s leaders in unused oil production, EOS had the facilities and expertise to undertake this seemingly miraculous task.

EOS was established on 1st November 1999, formed as a 50:50 joint venture between the electrical oils businesses Carless Refining & Marketing Ltd and Castrol UK Ltd.

The aim was to create a independent, specialised, stand-alone business to concentrate on this highly specific niche market. Our parent companies were leaders in the fields of automotive, marine and industrial lubricants, commodity solvents and low-volume speciality fuels. There was no natural synergy with the electrical oils business, which is highly technical and service-related.
Our independence allows us to concentrate on developing our business to best meet the needs of our customers.

How we do it

Much has changed since 1999, in particular there is more competition in the market than ever before. At EOS, we are the leading supplier of electrical insulating oils and associated services throughout the UK and parts of Europe. It is our length, breadth and depth of the expertise we have accumulated through our heritage that makes us the supplier of choice in this field.

Our specialist team has been reconditioning and reclaiming insulating oils for more than 60 years, and in this time has proven to respond to changes in market requirements, be it ensuring compliance with new National or International product Standards or developing plant and procedures for in-situ regeneration.
We have always provided for clients, both large and small, with a refined, bespoke solution they can trust.

As a small to medium sized enterprise, EOS is a streamlined, responsive organisation supported by the resources of major international partners. This structure has built the foundations for the current culture at EOS. Our team are innovative experts who have always been great problem solvers, and the first in line to take on a new challenge.

EOS, like its illustrious ancestors, is not a cut-price, budget supplier. It is an underlying principle of our business that we should provide our customers with the highest standards of products and services. Furthermore, we strive to do this in a way that anticipates customer needs and exceeds their expectations. We take our corporate, legal and social obligations seriously and full compliance with all applicable regulations and procedures is a top priority.

Customers choose EOS because of our long-established history of reliable service and quality products. Our clients know they can trust EOS. They rely on us to understand their needs and satisfy them in a most professional manner. This is a position unique to EOS by virtue of our heritage, expertise and resources. EOS is not just ‘in the electrical oils business’, EOS has for many years defined the electrical oils business and continues to do so today. This is achieved by being true to our ethos of fully understanding the customers’ needs and identifying collaboratively the best way to meet them.

Visit our EOS website

To find out more about our Electrical Oil Service business, click here. You will be transferred  to our specific EOS website.