| 1948 The completion of first plans for the heating station in Ljubljana. |
1959 The gathering of data on potential consumers, intense preparations for the building (October 3, 1959) The establishment of Toplarna Ljubljana still in the process of building. Its tasks are to build and start the production of heat and electricity. |
September 7,1962 The decree of the ELES administrative board allows the enterprise to establish a special plant with an independent statement of account with the task of taking over the management in thermal power plant on Slomskova ulica. |
| November 1,1962 The unit TE on Slomskova ulica connects to Toplarna Ljubljana that is being built. |
April 8, 1965 Toplarna Ljubljana still in the process of building is lawfully renamed to Toplarna in formation. |
September 24, 1968 The council of the enterprise in establishment adopts temporary regulations. |
| September 30, 1968 The constitution of Toplarna Ljubljana. |
January 1, 1969 TET, EB and TOL join DEM and rename into Elektrogospodarstvo Maribor (EGM) |
January 1, 1970 TOL becomes a basic organisation of associated labour (TOZD) in the framework of EGM. Within TOL the unit of Komunalna energetika is organised to care for the transfer and distribution of heat |
| July 7, 1970 TOL is registered as a TOZD in the framework of EGS. |
September 29, 1972 The unit Komunalna energetika gets separated. It has the following activities: transfer, distribution and own production in Toplarna 11 in Siska. |
December 28,1974 The establishment of SOZD IPK joining labour organisations (DO): Mestni vodovod, Komunalna energetika, Plinarna and Kanalizacija. |
| June 26, 1977 SOZD is reorganised to DO, individual units to TOZDs. |
November 15, 1977 Four TOZDs are established: Komunalni inzeniring, Komunalna operativa, Komunalne instalacije and Butan plin. |
March 31,1980 TOZD Komunalni inzeniring and TOZD Komunalne instalacije stop their activities. |
| 1981 Reorganisation of DO IPK. The activities performed by the following TOZDs get separated: Komunalna energetika, Plinarna and Butan plin. They joined to the DO ENERGETIKA UUBUANA. |
January 3,1982 DO ENERGETIKA LJUBLJANA gets constituted and registered into court register. |
1990 TOZD Butan plin leaves the company and operates independently. |
| 1991 DO ENERGETIKA UUBUANA renames into JAVNO PODJETJE ENERGETIKA LJUBLJANA, p. o |
May 24,1994 Executive council of the Assembly of the city of Ljubljana adopts a decree on the establishment of HOLDING MESTNIH PODJETIJ (Holding of City Enterprises) which contains the following public companies (JP): JP ENERGETIKA, JP VO-KA; JP LPP, JP Ljubljanske trznice. |
October 19,1994 JAVNO PODJETJE ENERGETIKA UUBUANA, d.o.o. in entered into the register of companies. |