 There he became a friend of the famous Russian electrical engineer Pavel Yablochkov and an enthusiast for applications of electrical energy.In 1871, Pirotsky moved back to Saint Petersburg, where among other things he proposed a new type of blast furnace.In 1874, he started experiments on Volkov Field in Saint Petersburg and in 1875 put electrically powered railway cars on the Sestroretsks railway Miller's line (not far from the station Miller's pier).