History

There are two balancing prices determined by the IMO:

The Provisional Balancing Price, which is the dollar per MWh price calculated in accordance with clause 7A.3.8(b).
The Final Balancing Price, which is the dollar per MWh price calculated in accordance with clause 7A.3.10.

The balancing price for a given Trading Interval is calculated on the basis of the STEM combined supply curves of all Market Generators and the real-time effective demand for that Trading Interval.

Please note that the Balancing Quantity is calculated 2 days after the relevant trading day and is dependant on STEM trading results and system load information. The Balancing data is an estimate based on data provided by other parties at the time and may therefore be subject to change.

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Trading Day	Hour of Day	Trading Interval	MCAP Price per MWh	UDAP Price per MWh	DDAP Price per MWh	Reason Code	Scheduled System Load MWh	Relevant Quantity MWh	Balancing Quantity MWh
Administered Balancing Prices (SWIS) (Data Extraction from WEMS occurred at Aug 05, 2011 02:35:16 PM)
03/08/2011	8	1	91.38	45.69	118.79	Recalculated	1131.657	1156.404	24.747
03/08/2011	8	2	85.44	42.72	111.07	Recalculated	1125.915	1141.165	15.25
03/08/2011	9	1	86.46	43.23	112.4	Recalculated	1104.959	1128.264	23.304
03/08/2011	9	2	87.73	43.87	114.05	Recalculated	1090.639	1118.08	27.441
03/08/2011	10	1	88.24	44.12	114.71	Recalculated	1080.396	1087.843	7.4470
03/08/2011	10	2	67.98	33.99	88.37	Recalculated	1086.127	1061.14	-24.98
03/08/2011	11	1	68.08	34.04	88.5	Recalculated	1081.211	1069.306	-11.90
03/08/2011	11	2	64.55	32.28	83.92	Recalculated	1080.685	1056.979	-23.70
03/08/2011	12	1	62	31	80.6	Recalculated	1078.92	1037.327	-41.59
03/08/2011	12	2	58.57	29.29	76.14	Recalculated	1093.429	1039.711	-53.71
03/08/2011	13	1	55.36	27.68	71.97	Recalculated	1093.778	1025.831	-67.94
03/08/2011	13	2	60.24	30.12	78.31	Recalculated	1096.46	1019.737	-76.72
03/08/2011	14	1	59.85	29.92	77.8	Recalculated	1087.859	1031.107	-56.75
03/08/2011	14	2	60.57	30.29	78.74	Recalculated	1089.86	1021.665	-68.19
03/08/2011	15	1	60.78	30.39	79.01	Recalculated	1092.97	1021.701	-71.26
03/08/2011	15	2	62.64	31.32	81.43	Recalculated	1098.312	1044.815	-53.49
03/08/2011	16	1	63.98	31.99	83.17	Recalculated	1117.323	1070.215	-47.10
03/08/2011	16	2	65.03	32.51	84.54	Recalculated	1142.516	1109.765	-32.75
03/08/2011	17	1	87.43	43.72	113.66	Recalculated	1169.924	1165.572	-4.352
03/08/2011	17	2	149.97	74.99	194.96	Recalculated	1212.957	1262.72	49.762
03/08/2011	18	1	336	168	436.8	Recalculated	1254.775	1330.345	75.569
03/08/2011	18	2	310.34	155.17	403.44	Recalculated	1264.158	1330.356	66.198
03/08/2011	19	1	144.55	72.28	187.91	Recalculated	1254.318	1307.819	53.500
03/08/2011	19	2	88.42	44.21	114.95	Recalculated	1227.239	1285.951	58.711
03/08/2011	20	1	90.37	45.19	117.48	Recalculated	1194.466	1254.221	59.755
03/08/2011	20	2	84.02	42.01	109.23	Recalculated	1191.282	1210.354	19.072
03/08/2011	21	1	62.7	31.35	81.51	Recalculated	1176	1140.815	-35.18
03/08/2011	21	2	62.7	31.35	81.51	Recalculated	1087.88	1078.422	-9.458
03/08/2011	22	1	30	0	33	Recalculated	1078.822	985.068	-93.75
03/08/2011	22	2	28.5	0	31.35	Recalculated	989.109	921.89	-67.21
03/08/2011	23	1	27.53	0	30.28	Recalculated	942.874	863.323	-79.55
03/08/2011	23	2	28	0	30.8	Recalculated	908.962	817.488	-91.47
03/08/2011	0	1	22.91	0	25.2	Recalculated	870.767	784.532	-86.23
03/08/2011	0	2	22.55	0	24.81	Recalculated	861.416	774.668	-86.74
03/08/2011	1	1	35	0	38.5	Recalculated	771.684	756.043	-15.64
03/08/2011	1	2	24.1	0	26.51	Recalculated	767.508	734.653	-32.85
03/08/2011	2	1	28.2	0	31.02	Recalculated	767.515	739.814	-27.70
03/08/2011	2	2	28	0	30.8	Recalculated	767.514	736.239	-31.27
03/08/2011	3	1	28	0	30.8	Recalculated	761.161	734.666	-26.49
03/08/2011	3	2	27.34	0	30.07	Recalculated	762.911	727.922	-34.98
03/08/2011	4	1	17.13	0	18.84	Recalculated	845.446	723.725	-121.7
03/08/2011	4	2	17.47	0	19.22	Recalculated	855.452	732.613	-122.8
03/08/2011	5	1	22.88	0	25.17	Recalculated	891.708	783.653	-108.0
03/08/2011	5	2	36.49	0	40.14	Recalculated	888.375	843.474	-44.90
03/08/2011	6	1	39.11	0	43.02	Recalculated	980.96	943.597	-37.36
03/08/2011	6	2	46.22	0	50.84	Recalculated	1084.815	1044.633	-40.18
03/08/2011	7	1	66.7	0	73.37	Recalculated	1178.392	1161.523	-16.86
03/08/2011	7	2	67	0	73.7	Recalculated	1237.31	1205.422	-31.88