Energy efficient transformer

In a typical grid, electric transformer

Transformer

A transformer is a device that transfers electrical energy from one circuit to another through inductively coupled conductors—the transformer's coils. A varying current in the first or primary winding creates a varying magnetic flux in the transformer's core, and thus a varying magnetic field...

 loss typically contributes about 40-50% of the total transmission & distribution loss. Energy efficient transformer is therefore an important mean to reduce T&D loss. With the improvement of electric steel (silicon steel) properties, loss of a transformer today is reduced to half of that of the transformer in the 70's. With new magnetic materials, it is possible to achieve even higher efficiency.

In a typical grid, electric transformer

Transformer

A transformer is a device that transfers electrical energy from one circuit to another through inductively coupled conductors—the transformer's coils. A varying current in the first or primary winding creates a varying magnetic flux in the transformer's core, and thus a varying magnetic field...

 loss typically contributes about 40-50% of the total transmission & distribution loss. Energy efficient transformer is therefore an important mean to reduce T&D loss. With the improvement of electric steel (silicon steel) properties, loss of a transformer today is reduced to half of that of the transformer in the 70's. With new magnetic materials, it is possible to achieve even higher efficiency. Amorphous metal transformer

Amorphous metal transformer

Amorphous Metal Transformer is a type of energy efficient transformer found on electric grids. The magnetic core of this transformer is made with amorphous metal, which is easily magnetized / demagnetized. Typically, core loss can be 70–80% less than its traditional counterpart...

is a modern example.