Toplofikatsiya Sofia (Топлофикация София, meaning "District Heating Sofia") is the district heating company in Sofia, the capital of Bulgaria.Recently it unveiled a new logo that had been selected through a contest.
Out of 400 submissions, the jury selected an entry created by a designer named Nevena Koleva, who also got to develop her proposal once selected. It features a stylized radiator and the degree symbol. The "radiator" also somewhat resembles the first letter in the company name.
The main reason the company wanted to change its corporate identity was that the patent office had made a decision that meant the company lost the rights to the previous logo. (Good riddance.)
The new logo was unveiled on May 17. It has not yet been implemented of the company website.
Топлофикация София (archive)