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 Dec 21, 2011 02:35:21 PM)
19/12/2011	8	1	54	27	70.2	Recalculated	1041.721	1041.261	-0.460
19/12/2011	8	2	54.65	27.33	71.04	Recalculated	1061.121	1070.399	9.2779
19/12/2011	9	1	54.65	27.33	71.04	Recalculated	1075.394	1089.493	14.098
19/12/2011	9	2	63	31.5	81.9	Recalculated	1080.356	1097.595	17.239
19/12/2011	10	1	77.82	38.91	101.17	Recalculated	1082.684	1118.352	35.668
19/12/2011	10	2	80.99	40.49	105.29	Recalculated	1081.663	1140.282	58.618
19/12/2011	11	1	80.99	40.49	105.29	Recalculated	1080.645	1146.09	65.444
19/12/2011	11	2	80.99	40.49	105.29	Recalculated	1084.071	1140.468	56.397
19/12/2011	12	1	81.02	40.51	105.33	Recalculated	1090.364	1138.305	47.941
19/12/2011	12	2	81.02	40.51	105.33	Recalculated	1084.355	1142.671	58.316
19/12/2011	13	1	81.02	40.51	105.33	Recalculated	1079.375	1131.266	51.891
19/12/2011	13	2	81.02	40.51	105.33	Recalculated	1084.899	1144.017	59.118
19/12/2011	14	1	82.16	41.08	106.81	Recalculated	1094.816	1157.156	62.339
19/12/2011	14	2	82.17	41.08	106.82	Recalculated	1094.998	1156.909	61.911
19/12/2011	15	1	82.12	41.06	106.76	Recalculated	1087.361	1157.609	70.247
19/12/2011	15	2	82.16	41.08	106.81	Recalculated	1076.487	1148.92	72.432
19/12/2011	16	1	82.06	41.03	106.68	Recalculated	1066.724	1151.111	84.387
19/12/2011	16	2	80.96	40.48	105.25	Recalculated	1058.996	1142.112	83.115
19/12/2011	17	1	81	40.5	105.3	Recalculated	1048.289	1123.212	74.923
19/12/2011	17	2	81	40.5	105.3	Recalculated	1046.202	1107.791	61.588
19/12/2011	18	1	55.37	27.68	71.98	Recalculated	1034.567	1086.231	51.663
19/12/2011	18	2	63	31.5	81.9	Recalculated	1027.625	1082.7	55.075
19/12/2011	19	1	55.37	27.68	71.98	Recalculated	1014.122	1070.509	56.387
19/12/2011	19	2	64.64	32.32	84.03	Recalculated	1007.094	1083.121	76.027
19/12/2011	20	1	63	31.5	81.9	Recalculated	993.696	1071.574	77.878
19/12/2011	20	2	55.37	27.68	71.98	Recalculated	977.752	1030.728	52.976
19/12/2011	21	1	38.86	19.43	50.52	Recalculated	978.127	971.609	-6.517
19/12/2011	21	2	26.73	13.37	34.75	Recalculated	969.958	919.903	-50.05
19/12/2011	22	1	49.46	0	54.41	Recalculated	747.812	870.918	123.10
19/12/2011	22	2	36.79	0	40.47	Recalculated	777.812	813.753	35.941
19/12/2011	23	1	26.98	0	29.68	Recalculated	722.874	765.121	42.246
19/12/2011	23	2	26.64	0	29.3	Recalculated	711.191	729.775	18.583
19/12/2011	0	1	24.78	0	27.26	Recalculated	711.191	698.26	-12.93
19/12/2011	0	2	23.2	0	25.52	Recalculated	701.767	673.789	-27.97
19/12/2011	1	1	20	0	22	Recalculated	692.839	661.3	-31.53
19/12/2011	1	2	20	0	22	Recalculated	678.911	655.405	-23.50
19/12/2011	2	1	20	0	22	Recalculated	678.911	658.716	-20.19
19/12/2011	2	2	20	0	22	Recalculated	678.911	659.214	-19.69
19/12/2011	3	1	20	0	22	Recalculated	678.911	663.592	-15.31
19/12/2011	3	2	20	0	22	Recalculated	678.911	664.428	-14.48
19/12/2011	4	1	23.2	0	25.52	Recalculated	678.911	673.511	-5.399
19/12/2011	4	2	23.78	0	26.16	Recalculated	674.564	676.322	1.7580
19/12/2011	5	1	24.78	0	27.26	Recalculated	679.187	694.187	15
19/12/2011	5	2	26.52	0	29.17	Recalculated	697.239	723.935	26.695
19/12/2011	6	1	40.75	0	44.83	Recalculated	744.543	803.643	59.100
19/12/2011	6	2	45.99	0	50.59	Recalculated	767.561	862.898	95.336
19/12/2011	7	1	26.29	0	28.92	Recalculated	940.843	923.402	-17.44
19/12/2011	7	2	45.15	0	49.67	Recalculated	992.334	984.325	-8.008