From an article in 2002

With a new generation of METGLAS. amorphous metal distribution transformers (AMDTs) -- with up to 80% lower core loss than conventional transformers — Honeywell is helping utilities worldwide achieve their efficiency objectives.

When you consider that 10% of all electricity generated by utilities is lost in the transmission and distribution process, the potential savings in reducing core loss can be significant.

Ultra-efficient transformer cores made with Honeywell's METGLAS amorphous metal alloy make lower core losses possible.

Amorphous metal distribution transformers are key to improving utility economics and enhancing energy conservation efforts worldwide. Also known as metallic glass alloys, they differ from traditional metals in that they have a non-crystalline structure and possess unique physical and magnetic properties that combine strength and hardness with flexibility and toughness.