Who We Are
At IsoTec,we are dedicated to setting new standards in transformer fluid technology. Our portfolio includes:
IsoTec SE 300 – high-performance synthetic ester fluids
IsoTec NE 350 – sustainable natural ester fluids
IsoTec Eco – regenerated synthetic ester fluids for a circular economy
Each product is developed with a strong focus on safety, sustainability, and reliability, and is backed by the internationally recognized FM Approval and other key industry certifications.
What sets IsoTec apart is not only the highest quality of our fluids but also the efficiency and flexibility of our supply chain. From small specialty volumes to large-scale bulk deliveries, and from IBCs to drums and tailor-made packaging, we ensure that every customer receives exactly what they need – on time and in full.
We combine technical expertise, state-of-the-art logistics, and a customer-first mindset to serve major electricity suppliers, railway operators, and industrial partners worldwide. IsoTec stands for:
Certified quality – compliance with the highest safety and environmental standards
Supply chain excellence – fast, cost-efficient, and scalable deliveries in any volume
Sustainability – promoting renewable, biodegradable, and regenerable solutions
Innovation – continuous development of ester-based fluids for future energy needs
With IsoTec, you gain a partner who not only supplies advanced transformer fluids but also helps you achieve your performance, safety, and environmental goals.
IsoTec
At IsoTec, we understand the critical role that reliable, high-performance transformer fluids in powering essential infrastructures, especially for subways, railway sector, and large-scale energy suppliers. Our products are engineered for durability and efficiency, ensuring the smooth operation of high-demand machinery and reducing downtime. With our commitment to quality, innovation, and cost-effective solutions, IsoTec helps you minimize operational costs and maximize performance. Choose IsoTec for special know-how that meets the strict requirements worldwide in terms of environmental protection, sustainability and safety.
Our Company
IsoTec develops and supplies advanced transformer fluids – from synthetic esters (IsoTec SE) and natural esters (IsoTec NE) to regenerated esters (IsoTec Eco).
Our products are trusted by electricity suppliers, railway operators, and critical infrastructure companies worldwide. With internationally recognized certifications such as FM Approval, we ensure the highest standards of safety, performance, and environmental responsibility.
Thanks to our efficient supply chain and flexible packaging options, we deliver the right quality and volume – from drums and IBCs to bulk shipments – exactly when and where our customers need it.
As a partner committed to innovation and sustainability, IsoTec is driving the future of transformer technology and preparing for international expansion to make our proven solutions available on a global scale.
Choosing IsoTec means partnering with a specialist in ester-based transformer fluids. Our portfolio – from IsoTec SE (synthetic esters) and IsoTec NE (natural esters) to IsoTec Eco (regenerated esters) – is engineered to meet the highest demands of the energy and railway sectors.
With internationally recognized certifications such as FM Approval, our fluids provide proven fire safety, environmental responsibility, and long-term performance.
High-Performance Fluids – tailored to the most demanding transformer applications
Certified Reliability – FM Approved and tested to international standards
Minimized Downtime – extended fluid lifetime and reduced maintenance needs
Operational Efficiency – scalable supply chain with flexible packaging and delivery
IsoTec is not just a supplier – we are your strategic partner in ensuring the safe, efficient, and sustainable operation of critical infrastructures worldwide.
At IsoTec, sustainability means more than a promise – it’s built into our products.
Natural esters: made from renewable raw materials
Synthetic esters: high percentage of renewable raw materials, circular fluids, endlessly regenerable
Biodegradable & safe: no disposal risks, no recorded fire incidents worldwide
With IsoTec, you combine environmental responsibility with maximum safety and reliability.
IsoTec transformer fluids are trusted in a wide range of critical applications, ensuring safety, performance, and sustainability wherever energy matters most:
Retrofilling (mostly distribution transformers)
Renewable energy (wind, solar, hydro)
Distribution & power transformers
Marine applications
Underground installations
Railways, trains & traction systems
Industrial facilities
IsoTec stands at the heart of the world’s essential infrastructure – powering progress with certified, reliable, and environmentally responsible solutions.
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FAQ
IsoTec is a leader in biodegradable transformer fluid in Germany and Europe. This solution will positively affect your business and transformer life!
IsoTec specializes in providing high-quality transformer fluids and solutions primarily for subways, railway companies, and large-scale energy suppliers. We cater to the unique demands of these industries, ensuring reliable and efficient products that support critical infrastructure. We value personal and flexible service for our customers. We are always one step ahead, especially when it comes to speedy delivery worldwide.
IsoTec stands out through its commitment to industry-specific solutions, durability, and operational efficiency. Our products are engineered for high-performance under demanding conditions, ensuring minimal downtime and optimized maintenance schedules. Additionally, IsoTec prioritizes environmental responsibility and cost-effectiveness.
IsoTec employs rigorous quality control processes and uses only premium materials in its lubricants and energy products. Our products undergo extensive testing under industrial conditions to meet and exceed safety and performance standards, ensuring long-lasting, reliable results for our clients.
Yes, IsoTec’s products are designed for efficiency and longevity, helping clients reduce operational costs by lowering energy consumption, reducing equipment wear and tear, and minimizing maintenance downtime. Our solutions are tailored to optimize performance, which translates into cost savings for our clients.
Absolutely. IsoTec works closely with clients to understand their unique challenges and requirements. We can customize our lubricant and energy solutions to suit specific operating conditions, ensuring that each client receives a product tailored for their industrial application.
IsoTec Business Timeline
Launch of IsoTec Business
Expansion into Energy Sector Partnerships
Expansion into International Markets
Development of Hybrid Lubricants for Renewable Energy
