The time after World War II was the time of an intense development of the energy industry in Poland. The country was rebuilding, and at the same time developing at a rapid pace. New technologies would come into use. Modern power plants would emerge, light bulbs would light up in rural areas – a country-wide electrification process begun. It was also the time of compulsory ration coupons and power supply limitations. There is no doubt, however, that the then development laid the foundations for the current energy situation of the country.