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 Jun 22, 2011 02:35:14 PM)
20/06/2011	8	1	42.49	21.25	55.24	Recalculated	1171.135	1150.787	-20.34
20/06/2011	8	2	42.49	21.25	55.24	Recalculated	1173.286	1143.513	-29.77
20/06/2011	9	1	49.82	24.91	64.77	Recalculated	1166.4	1141.536	-24.86
20/06/2011	9	2	42.49	21.25	55.24	Recalculated	1155.701	1119.856	-35.84
20/06/2011	10	1	42.49	21.25	55.24	Recalculated	1144.287	1102.257	-42.02
20/06/2011	10	2	42.49	21.25	55.24	Recalculated	1133.286	1097.149	-36.13
20/06/2011	11	1	42.49	21.25	55.24	Recalculated	1125.076	1090.391	-34.68
20/06/2011	11	2	42.59	21.3	55.37	Recalculated	1122.08	1085.88	-36.19
20/06/2011	12	1	43.11	21.56	56.04	Recalculated	1118.471	1081.03	-37.44
20/06/2011	12	2	43.1	21.55	56.03	Recalculated	1115.25	1071.67	-43.57
20/06/2011	13	1	42.81	21.41	55.65	Recalculated	1114.214	1070.39	-43.82
20/06/2011	13	2	42.49	21.25	55.24	Recalculated	1103.661	1084.834	-18.82
20/06/2011	14	1	42.49	21.25	55.24	Recalculated	1093.623	1089.883	-3.740
20/06/2011	14	2	42.49	21.25	55.24	Recalculated	1090.167	1093.594	3.4270
20/06/2011	15	1	49.82	24.91	64.77	Recalculated	1089.303	1095.025	5.7219
20/06/2011	15	2	49.82	24.91	64.77	Recalculated	1097.046	1110.766	13.720
20/06/2011	16	1	41.57	20.79	54.04	Recalculated	1115.852	1130.872	15.019
20/06/2011	16	2	47.16	23.58	61.31	Recalculated	1147.43	1164.608	17.177
20/06/2011	17	1	54.29	27.15	70.58	Recalculated	1184.913	1222.134	37.221
20/06/2011	17	2	77.28	38.64	100.46	Recalculated	1218.749	1298.944	80.194
20/06/2011	18	1	67.49	33.74	87.74	Recalculated	1235.476	1310.747	75.270
20/06/2011	18	2	61.12	30.56	79.46	Recalculated	1234.527	1282.612	48.085
20/06/2011	19	1	49.82	24.91	64.77	Recalculated	1211.8	1243.385	31.585
20/06/2011	19	2	43.57	21.79	56.64	Recalculated	1174.517	1200.28	25.762
20/06/2011	20	1	40.62	20.31	52.81	Recalculated	1133.023	1156.307	23.284
20/06/2011	20	2	37.71	18.86	49.02	Recalculated	1110.351	1121.286	10.934
20/06/2011	21	1	35.92	17.96	46.7	Recalculated	1052.69	1077.1	24.409
20/06/2011	21	2	51.54	25.77	67	Recalculated	981.848	1023.243	41.395
20/06/2011	22	1	34.66	0	38.13	Recalculated	933.484	952.885	19.400
20/06/2011	22	2	34.66	0	38.13	Recalculated	884.43	903.065	18.635
20/06/2011	23	1	31.45	0	34.6	Recalculated	837.294	852.486	15.192
20/06/2011	23	2	27.48	0	30.23	Recalculated	798.855	815.1	16.245
20/06/2011	0	1	29.4	0	32.34	Recalculated	767.86	791.872	24.011
20/06/2011	0	2	30.4	0	33.44	Recalculated	748.014	772.929	24.914
20/06/2011	1	1	27.56	0	30.32	Recalculated	740.938	762.085	21.147
20/06/2011	1	2	27.54	0	30.29	Recalculated	733.242	756.588	23.346
20/06/2011	2	1	27.54	0	30.29	Recalculated	726.18	750.209	24.028
20/06/2011	2	2	27.51	0	30.26	Recalculated	720.749	743.478	22.728
20/06/2011	3	1	27.51	0	30.26	Recalculated	721.8	742.847	21.047
20/06/2011	3	2	27.48	0	30.23	Recalculated	724.386	745.458	21.072
20/06/2011	4	1	29.67	0	32.64	Recalculated	747.724	757.005	9.2809
20/06/2011	4	2	31.92	0	35.11	Recalculated	756.805	777.151	20.346
20/06/2011	5	1	34.66	0	38.13	Recalculated	790.763	819.902	29.139
20/06/2011	5	2	34.66	0	38.13	Recalculated	842.642	870.162	27.519
20/06/2011	6	1	36.47	0	40.12	Recalculated	891.359	952.111	60.751
20/06/2011	6	2	42.5	0	46.75	Recalculated	986.93	1034.707	47.777
20/06/2011	7	1	72.72	0	79.99	Recalculated	1087.938	1126.862	38.923
20/06/2011	7	2	65.88	0	72.47	Recalculated	1155.504	1162.537	7.0330