Energy solutions for a sustainable future

The most frequently ordered ratings (63 kVA to 1600 kVA) are available ex stock – delivery then takes 2–3 working days from order confirmation within Poland, and typically 5–10 working days elsewhere in Europe. The current list of transformers in stock with prices and documentation is in our online shop: energeks.shop. Non-standard designs usually take 6–10 weeks.

MarkoEco2 and TeoEco2 transformers are designed and tested to the European standards EN 60076 (IEC 60076) and EN 50588-1, with losses at the level required by the EU EcoDesign Regulation 2019/1783 (Tier 2). They carry the CE marking under the Low Voltage (2014/35/EU), EMC (2014/30/EU) and EcoDesign (2009/125/EC) directives and are also built to the technical specifications of the Polish distribution system operators. Standard ratios: 10/0.4, 15.75/0.42, 20/0.4 and 21/0.42 kV; vector group Dyn5 or Dyn11; other ratios up to 36 kV on request. Every unit is delivered with a test report, CE declaration of conformity, rating plate and manual.

All transformers come with a 5-year warranty. We sell brand-new units only; each one passes full factory tests confirmed by a test report.

As standard: the factory test report, CE declaration of conformity, rating plate, operation and maintenance manual and the datasheet. On request we provide type-test reports from an accredited laboratory and DWG dimension drawings.

Yes. The price usually includes transport to the address of your choice within Poland. On request we arrange crane unloading and international deliveries – we ship transformers to customers throughout Europe and beyond.

The MarkoEco2 oil-immersed transformer is the most economical choice for outdoor, pole-mounted and container substations – lower price and lower losses. The TeoEco2 cast-resin transformer is self-extinguishing (class F1) and contains no oil, so it is chosen for the inside of buildings: hospitals, offices, shopping centres and plants where fire safety matters. We will gladly advise on the right choice for your installation.

Yes. MarkoEco2 and TeoEco2 transformers operate in many PV farms and BESS installations. We select the rating, ratio (e.g. 0.8 kV on the inverter side) and impedance voltage to the requirements of the grid operator and the project. We also deliver complete prefabricated transformer substations.

As standard an off-circuit tap changer ±3×2.5% (7 positions) on the high-voltage side. On request: ±2×2.5%, ±4×2.5% or ±5×2.5%.

Yes. We help select the transformer, prepare documentation for grid-operator approvals and provide service during and after the warranty period, including spare parts and accessories (temperature sensors, relays, surge arresters).

Call +48 664 951 947, write to info@energeks.com or use the form on this website. State the rating, ratio, vector group and delivery address – we usually send the quote the same working day. Transformers in stock can also be bought directly in our online shop: energeks.shop.