15/10/2023 - 14:57:27
Around 1884, French Ambassador Bonnal erected several light poles along the road around Hoan Kiem lake, Hanoi. These were the first light poles in Hanoi. In 1892, construction began on the Bo Ho lamp factory with a capacity of 0.5 MW running on oil. By 1899, the factory's capacity increased to 850 horsepower to meet the office power supply around Hoan Kiem lake. After that, the government installed more light poles around Hoan Kiem lake, Yen Phu dike border gate and several other locations. At this time in Hanoi, two types of light poles were manufactured: lit by oil and by electricity.