Heating and cooling degree days | Environmental indicators

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Slovenians are not the most energy efficient

Fossil fuels private cars are dominant mode of transport in Slovenia

Avto na fosilna goriva je naše primarno prevozno sredstvo

Alternative drives are dominated by electric vehicles and hybrids

Kako se spreminja struktura našega voznega parka

Comparison of periods 1961-1990 and 1991-2020 on the chosen representative stations around Slovenia shows decrease of heating degree days by around 10 % and multiple increase of cooling degree days. With projected continuous temperature raise until the end of 21st century, those trends are expected to continue. Thus, in Slovenia, energy demand for cooling will increase in the warmer period of the year, while the energy demand for heating will decrease in colder period of the year. Same trend is projected for Europe in general.

Charts

Figure PP11-1: Annual heating degree days, Slovenia, 1961-2022

Sources:

Slovenian Environment Agency, 2023

Show data


	Kredarica[Kday]	Rateče[Kday]	Murska Sobota[Kday]	Novo mesto[Kday]	Ljubljana[Kday]	Bilje[Kday]
1961	7682	4363	2937		2873
1962	7935	4809	3527	3574	3347
1963	8245	5148	4044	3917	3736	2895
1964	7626	4552	3686	3550	3319	2502
1965	8101	4960	3588	3682	3464	2663
1966	7883	4682	3349	3239	3166	2496
1967	8035	4636	3204	3275	3124	2445
1968	7716	4490	3311	3146	3065	2372
1969	8065	4880	3637	3519	3438	2572
1970	8225	5039	3682	3654	3476	2680
1971	7943	4821	3446	3371	3277	2561
1972	7685	4722	3533	3570	3386	2580
1973	8095	4948	3800	3714	3584	2800
1974	7829	4619	3456	3321	3192	2554
1975	7958	4705	3295	3244	3177	2672
1976	7836	4603	3653	3536	3474	2694
1977	7947	4641	3229	3086	2960	2223
1978	8066	4979	3610	3503	3409	2662
1979	7960	5107	3755	3534	3553	2802
1980	8208	5022	3694	3496	3440	2822
1981	7866	4956	3640	3438	3503	2924
1982	8017	4785	3551	3419	3378	2871
1983	7514	4248	3053	2850	2937	2472
1984	7985	4917	3745	3509	3517	2962
1985	7998	4839	3757	3523	3440	2840
1986	7689	4627	3507	3421	3357	2689
1987	7920	5039	3866	3596	3568	2944
1988	7552	4299	3150	2979	2978	2451
1989	7359	4464	3250	3116	3110	2661
1990	7361	4383	3102	2950	2987	2707
1991	7991	4959	3574	3350	3295	2654
1992	7614	4397	3236	3138	3149	2692
1993	7243	4348	3241	3063	3019	2570
1994	7677	4447	3006	2899	2826	2315
1995	7498	4321	3172	3099	3012	2485
1996	7773	4655	3596	3350	3179	2586
1997	7766	4522	3438	3286	3068	2455
1998	7502	4236	3160	2961	2875	2425
1999	7668	4565	3317	3193	3074	2596
2000	7475	4157	3122	2993	2918	2498
2001	7404	3972	2647	2447	2463	1991
2002	7359	4296	3136	2984	2906	2400
2003	7584	4161	3400	3186	2950	2327
2004	7621	4658	3348	3197	3113	2564
2005	7670	4506	3338	3139	3049	2533
2006	7815	4765	3485	3269	3185	2579
2007	6878	3669	2563	2229	2146	1879
2008	7609	4417	3181	3119	3060	2509
2009	7682	4398	2925	2920	2870	2229
2010	7670	4288	3104	2997	2992	2440
2011	7580	4237	3123	3089	2862	2349
2012	7342	4109	3158	3047	2954	2491
2013	7484	4407	3091	3028	2899	2391
2014	7105	4005	2554	2367	2288	1731
2015	7433	3813	2672	2578	2523	2052
2016	7002	4156	2850	2736	2681	2252
2017	7239	4071	3180	2993	2822	2329
2018	7371	4239	2903	2778	2720	2333
2019	7214	4091	2893	2814	2607	2151
2020	6978	3950	2696	2481	2369	1981
2021	7393	4424	3108	2913	2911	2422
2022	7165	4215	3081	3001	2895	2486

Export Table Data

Figure PP11-2: Annual cooling degree days, Slovenia, 1961-2022

Sources:

Slovenian Environment Agency, 2023

Show data


	Rateče[Kday]	Murska Sobota[Kday]	Novo mesto[Kday]	Ljubljana[Kday]	Bilje[Kday]
1961	0	42		48
1962	0	25	22	47
1963	0	67	51	72	95
1964	0	13	13	38	92
1965	0	26	25	46	60
1966	0	13	15	26	64
1967	0	54	41	71	132
1968	5	41	36	53	77
1969	0	23	16	43	76
1970	0	36	28	70	97
1971	2	38	31	64	108
1972	0	31	28	37	96
1973	0	24	24	27	98
1974	0	51	45	63	108
1975	0	8	10	17	59
1976	1	17	26	31	56
1977	0	18	24	23	36
1978	0	3	10	9	34
1979	0	23	28	32	83
1980	0	14	26	36	52
1981	0	39	47	41	67
1982	0	20	38	55	130
1983	10	55	59	77	70
1984	3	14	28	26	23
1985	0	33	41	64	72
1986	1	37	42	63	95
1987	0	56	52	59	93
1988	0	72	77	107	108
1989	0	31	24	34	60
1990	0	30	44	58	65
1991	2	62	65	87	134
1992	6	145	94	123	139
1993	2	85	106	103	135
1994	7	109	121	145	229
1995	3	44	54	83	145
1996	0	31	36	47	72
1997	0	31	22	35	85
1998	5	90	116	153	204
1999	0	55	70	81	124
2000	1	131	144	129	132
2001	0	103	125	143	168
2002	10	86	75	91	134
2003	15	237	250	267	376
2004	3	46	62	83	129
2005	4	56	77	90	139
2006	19	110	142	159	209
2007	6	146	119	137	157
2008	3	107	100	128	170
2009	6	79	107	143	199
2010	17	108	127	144	157
2011	8	95	129	157	202
2012	14	166	189	218	306
2013	28	175	169	205	245
2014	1	67	68	80	82
2015	28	183	209	238	275
2016	4	85	101	138	218
2017	1	147	202	218	233
2018	13	120	96	174	228
2019	27	146	168	211	304
2020	5	66	99	121	172
2021	9	149	176	207	238
2022	12	132	174	279	401

Export Table Data

Figure PP11-3: Timeline of change in average annual heating degree days in Slovenia over the 21st century

Sources:

Slovenian Environment Agency, 2020

Chart note:

The timeline of change in average annual heating degree days in Slovenia over the 21st century for three scenarios relative to the reference period 1981-2010. Bold coloured curves show smoothed model median and lighter colours show model spread.

Figure PP11-4: Timeline of change in average annual heating degree days in Slovenia over the 21st century

Sources:

Slovenian Environment Agency, 2020

Chart note:

The timeline of change in average annual cooling degree days in Slovenia over the 21st century for three scenarios relative to the reference period 1981-2010. Bold coloured curves show smoothed model median and lighter colours show model spread.

Figure PP11-5: Projected change in average annual heating degree days in Slovenia and the associated reliability of change

Sources:

Slovenian Environment Agency, 2020

Figure PP11-6: Projected change in average annual cooling degree days in Slovenia and the associated reliability of change

Sources:

Slovenian Environment Agency, 2020

Figure PP11-7: Projected linear trend in heating and cooling degree days in Europe over the period 1981-2100

Sources:

EEA, 2019

Chart note:

These maps show the trend in heating degree days (left) and cooling degree days (right) from 1981-2100 under the RCP4.5 (upper panels) and RCP8.5 (lower panels). Projections are based on the median of an ensemble of 11 EURO-CORDEX simulations.

Methodology

Other sources and literature

Agencija RS za okolje, 2021. Temperaturni primanjkljaj in presežek ter kurilna sezona 1961-2023.
Evropska agencija za okolje, 2021. Heating and cooling degree days.
IPCC, 2014a: Climate Change 2014: Impacts, Adaptation, and Vulnerability. Part A: Global and Sectoral Aspects. Contribution of Working Group II to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change [Field, C.B., V.R. Barros, D.J. Dokken, K.J. Mach, M.D. Mastrandrea, T.E. Bilir, M. Chatterjee, K.L. Ebi, Y.O. Estrada, R.C. Genova, B. Girma, E.S. Kissel, A.N. Levy, S. MacCracken, P.R. Mastrandrea, and L.L. White (eds.)]. Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA, 1132 pp.
IPCC, 2014c: Europe. Kovats, R.S., R. Valentini, L.M. Bouwer, E. Georgopoulou, D. Jacob, E. Martin, M. Rounsevell, and J.-F. Soussana, 2014: Europe. In: Climate Change 2014: Impacts, Adaptation, and Vulnerability. Part B: Regional Aspects. Contribution of Working Group II to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change [Barros, V.R., C.B. Field, D.J. Dokken, M.D. Mastrandrea, K.J. Mach, T.E. Bilir, M. Chatterjee, K.L. Ebi, Y.O. Estrada, R.C. Genova, B. Girma, E.S. Kissel, A.N. Levy, S. MacCracken, P.R. Mastrandrea, and L.L. White (eds.)]. Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA, pp. 1267-1326.

Last modified: 26.06.2023

Author(s): Ana Car, Mojca Dolinar, Slovenian Environment Agency

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[PP11] Heating and cooling degree days

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