Reliable Power Starts Here
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Distribution
TransformersOil-filled distribution transformers with low-loss cores, built to your utility or industrial network specification.
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Power
TransformersOil-filled power transformers up to 50 MVA and 72.5 kV, each one built to order for your grid connection.
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Custom
TransformersOur engineers create around 400 new oil-filled designs a year, so your unit is designed for your project, not picked from a catalog.
Built Around Your Project
You tell us what the transformer needs to do and where it’s going. Our engineers design it to fit your site and your timeline, then see it through testing and delivery. If the brief changes along the way, we change with it.
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Talk directly to our engineers
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Oil-filled under vacuum
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Accredited lab test reports
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Project-specific engineering advice
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Worldwide on-site technical support team
About Us
SEM Transformer started in 1989 as a small company and now employs more than 300 people at modern production facilities in Türkiye. We specialize in oil-filled transformers and have spent 37 years refining how we build them. Many of our team have been here for decades and have worked across testing, manufacturing and our depot, so they understand the whole process and adapt quickly to each project.
SEM Video
Inside our Ankara factory
Applications
Built for Critical
Power Projects
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Data Centers
Transformers sized to your load and layout, and delivered on time so your facility energizes on the date you planned.
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Utility Networks
Oil-filled distribution and power transformers for utility grids, tested in our accredited lab before they ship.
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EPC
Units built to your project specification and delivery dates, so your solar, wind and grid packages hand over on schedule.
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BESS
Step-up units matched to your battery energy storage site, so your project connects to the grid on time.
Global Reach
Supporting Energy Projects in over 55 countries
Wherever you’re building, you’ll work with one team from the first conversation to the final test. Our engineers come to your site to supervise installation and testing, and they’re there for repairs if you ever need them
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For projects across the US and North America, speak with our international sales team to discuss transformer specifications, timelines and technical support.
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For projects across Europe and the UK, speak with our international sales team to discuss transformer specifications, timelines and technical support.
Certifications
