Tag: LPTs pose risk to US power grid

Power transformers pose weakness in the electric grid

LPTs are custom-designed and cost millions of dollars to replace. Due to their weight between 100 and 400 tons apiece, they are extremely difficult to transport. According to a 2012 Energy Department report, the replacement of LPTs could take 20 months or more due to the complex procurement rules for the technology and the fluctuating price of copper and electrical steel in recent years.