KPTCL to replace mineral oil with ester oil in high-capacity transformers across Karnataka
The Karnataka Power Transmission Corporation Limited (KPTCL) is transitioning from mineral oil to biodegradable ester oil in its high-capacity transformers. This initiative aims to improve thermal efficiency, enhance safety due to a higher flash point, and extend the lifespan of aging grid infrastructure.
Why it matters
This shift represents a significant move toward sustainable and safer utility infrastructure management in India, potentially reducing long-term maintenance costs and environmental risks.
Despite the price of ester oil being higher than mineral oil, Karnataka Power Transmission Corporation Limited (KPTCL) has planned to replace mineral oil with ester oil in high-capacity transformers across the State in the next one year.
A senior official from the KPTCL said, “The ester oil is derived from vegetables, and it acts as a coolant and because of its high flash point, the transformer resists ignition. It is also highly biodegradable, non-toxic, and helps extend the lifespan of the transformer. Rather than incurring substantial capital expenditure on replacing ageing transformers during rains, the KPTCL has adopted a cost-effective approach by upgrading transformers that are over 15 years old. Thus improving their performance and extending their service life.”
Get smarter about the news
Sign up free for a feed built around what you actually care about, Dive Deeper research on any story, and the full text of every article.
Create free accountAlready have an account? Sign in