Its cost-efficient factor was the main reason the light bulb replaced gas lamps in most places, but they had to get rid of its carbon filament first. Auer’s osmium lamp was the first lamp to have a wire filament (also its energy in-take was half of its carbon filament predecessor), patented by the United Bulb company (later called Tungsram). By upgrading this light bulb, the first tungsten filament lamp was manufactured in Budapest. (using only one-third of energy of the carbon filament version), and in 1906 its mass production was started. In 1913, the production of gas-filled bulbs was started.

Because of these factors, after the turn of the century, the spread of gas lamps declined. However, electric lamps only began their work in 1909, when on an experimental basis, the first arc lamps lit up on the streets of Budapest. The lighting of the main roads in Budapest was switched to electrical in 1911.