Benchmark 8C
The Designed World: Energy Sources and Use
Grades 6-8, page 194

Electrical energy can be produced from a variety of energy sources and can be transformed into almost any other form of energy. Moreover, electricity is used to distribute energy quickly and conveniently to distant locations.

NSES Content Standard B 
Physical Science: Transfer of energy
Grades 5-8, page 155
Electrical circuits provide a means of transferring electrical energy when heat, light, sound, and chemical changes are produced.