In India, major manufacturers supply HV and EHV transformers to central and state utilities, railways, and industrial users. They produce GSUs, autotransformers, and distribution units compliant with Indian and IEC standards. Their factories handle design, fabrication, tanking, oil processing, and high-voltage testing up to 765 kV class. Many also export to Africa, Middle East, and Southeast Asia, making India a significant hub for transformer manufacturing in the region.