Telegraphy is know to be the first significant application of controlled electricity in Cleveland in the year 1847. The Fire-alarm boxes are considered to be the second useful manifestation of the "new" power in the city. By the end of 1865 there were 24 of Fire-alarm boxes installed throughout the region. The telephone came in 1877.
During the 18th century the Cleveland-area electrical industry grew rapidly, led by the expansion of applications in communications, lighting, and traction. However, by the end of 19th century the industry ranked first in the production of electric automobiles, carbons, lamps, and electrical hoisting apparatus. In the year 1914, major exposition of the electrical industry further promoted Cleveland's claim to primacy.
Some of the other main areas of electric-industrial progress came in during the latter part of the 19th century. Lighting, traction, and industrial motors, are some of the discoveries made during that century. Charles. F. Brush is considered to be one of the prominent innovators of the period. Some of his main contribution were made in the practical development and commercial exploitation of the arc light.
This invention was believed to be one of the important industrial applications for the electrical technology in Cleveland, mainly because of John C. Lincoln, the founder of the Lincoln Electric Co., who had gained experience working in Charles F. Brush's shops. In 1896, the firm began producing electric motors, and by 1938 it claimed to be the largest manufacturer of that line in the world.
The Cleveland electrical firms during the World War II, reorganized their production around the military needs, which led to the invention of miniature radio tubes at Nela Park for use in proximity fuses for antiaircraft artillery shells. Many other inventions were made during this period, which stimulated the formation of a new Electronics Department at GE in 1947. The postwar period was also one of rapid growth for the industry.
Since 1940s, the electric and electronics has undergone sea changes. Right from vacuum tubes to the production of discrete transistors, and finally, to complex computer-linked systems are some of the inventions made in this category.