Table Survey of Most Important Data

	year	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994
The Survey of the Increase of Connected Heat Loads
Residential Buildings	MW	344	356	363	371	375	384	390	411	432	443
Industrial Buildings	MW	470	498	524	536	550	563	575	586	601	598

	year	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994
Abolished Boiler Rooms and Local Fire Boxes
Abolished Boiler Rooms and Local Fire Boxes (in a year)	MW	8	22	14	13	9	10	18	22	27	33
Joint Power of Abolished Boiler Rooms	MW	248	270	284	296	306	316	334	356	383	389

	year	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994
Comparison of Consumers' Connected Heat Loads and Rated Heat Capacity of the Sources of Energy
Connect load of hot-water and Steam Systems	MW	856	898	927	945	964	985	1001	1031	1064	1067
joint Rated Heat Capacity of the Sources of Energy	MW	711	711	711	711	827	827	855	855	855	855

	year	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994
Hot-water Network
Primary Network (DN 250 and up)	km	42	44	44	45	45	46	46	46	46	46
Secondary network and Connections	km	77	79	82	87	89	93	96	101	106	110

	year	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994
Heating Substations
All Heating Substations	pcs	904	945	984	1032	1073	1126	1164	1274	1412	1529
Indirect Heating Substations	pcs	590	660	750	849	895	950	989	1100	1239	1357

	year	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994
Survey of Heat Meters Installations
Number of Installed Heat Meters	pcs	555	656	745	889	995	1090	1172	1227	1389	1559
Measured Power	MW	505	561	613	689	741	770	796	821	877	896

	year	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994
Steam Network
Steam Network	km	8.5	8.5	8.5	8.5	8.5	8.5	8.5	8.5	8.8	8.8

	year	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994
Number of Flats Heated by District Heating System
Space Heating and Hot Service Water	flat	26562	28070	28398	28706	29247	29679	30237	30861	31044	31095
Space Heating Only	flat	7034	7529	7850	8110	8647	8719	9250	10972	13299	14131

	year	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994
Technological Steam Production
CHP Station Ljubljana	MWh	167920	167520	188362	169482	155185	146146	138370	129295	123501	108581
Heating Station Siska	MWh	4849	5471	5516	5502	5447	6265	7123	6488	6803	8022

	year	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994
Share of Flats Heated by District Heating System in Ljubljana (ex-communes)
Share of Heated Flats	%	29	30		30	31	31	32	34	36	36

	year	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994
Heat Production for Hot-water System
CHP Station Ljubljana	MWh	690	790	811	849	926	808	972	945	910	911
Heating Station Siska	MWh	275	215	272	187	124	191	189	138	229	146

	year	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994
Consumption of Heat for Hot-water System
Coal	GWh	808	960	979	998	1087	933	1068	1015	960	985
Fuel Oil	GWh	158	100	123	58	44	66	161	123	237	138
Natural Gas	GWh	252	233	279	209	142	191	112	105	111	110
Coal	%	66	74	71	79	85	78	80	82	72	80
Fuel Oil	%	13	8	9	5	3	6	12	10	19	11
Natural Gas	%	21	18	20	17	11	16	8	8	9	9

	year	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994
Survey of Highest SO2 Concentrations in Ljubljana
Average Yearly SO2 Concentrations	mg/m3	0.24	0.17	0.2	0.13	0.1	0.08	0.1	0.05	0.05	0.04
Highest Measured SO2 Value	mg/m3	0.99	0.7	0.87	0.45	0.52	0.77	0.46	0.3	0.31	0.15

Historical Development of the Structure of the Company for District Heating in Ljubljana