KPTCL begins shift to biodegradable ester oil in transformers

The Karnataka Power Transmission Corporation Limited (KPTCL) has initiated the transition from conventional mineral oil to biodegradable natural ester oil in its high-voltage transformer network.

According to KPTCL, the move is intended to improve grid safety, reduce environmental risks, and enhance the operational life of critical transmission infrastructure.

Natural ester oil is considered an environment-friendly alternative to conventional mineral oil used in transformers due to its biodegradable properties and lower fire risk characteristics.

The transition also reflects a broader industry shift toward environmentally safer insulation technologies and stricter grid reliability standards. Ester oil-based transformers are increasingly being adopted for applications requiring higher fire safety and reliability, particularly in urban and critical infrastructure networks.

KPTCL stated that the initiative aligns with Karnataka’s broader focus on developing sustainable energy infrastructure and improving reliability across the transmission network.

The transition forms part of the utility’s efforts to modernise transmission assets while incorporating environmentally sustainable technologies in grid operations.

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