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 20, 2010 02:37:04 PM)
17/12/2010	8	1	45.45	22.73	59.08	Recalculated	1093.739	1061.518	-32.22
17/12/2010	8	2	47.25	23.63	61.42	Recalculated	1106.23	1096.873	-9.356
17/12/2010	9	1	45.76	22.88	59.49	Recalculated	1145.843	1108.598	-37.24
17/12/2010	9	2	45.45	22.73	59.08	Recalculated	1170.094	1119.28	-50.81
17/12/2010	10	1	43.11	21.56	56.04	Recalculated	1196.884	1127.619	-69.26
17/12/2010	10	2	35.34	17.67	45.94	Recalculated	1208.83	1144.235	-64.59
17/12/2010	11	1	38	19	49.4	Recalculated	1232.358	1164.144	-68.21
17/12/2010	11	2	36.64	18.32	47.63	Recalculated	1244.431	1178.513	-65.91
17/12/2010	12	1	45.45	22.73	59.08	Recalculated	1260.924	1196.657	-64.26
17/12/2010	12	2	45.45	22.73	59.08	Recalculated	1275.719	1204.709	-71.00
17/12/2010	13	1	45.45	22.73	59.08	Recalculated	1285.929	1220.213	-65.71
17/12/2010	13	2	46.45	23.23	60.38	Recalculated	1294.294	1237.717	-56.57
17/12/2010	14	1	36.06	18.03	46.88	Recalculated	1324.281	1254.003	-70.27
17/12/2010	14	2	36.06	18.03	46.88	Recalculated	1337.74	1268.208	-69.53
17/12/2010	15	1	36.83	18.42	47.88	Recalculated	1338.458	1276.303	-62.15
17/12/2010	15	2	47.45	23.73	61.68	Recalculated	1311.732	1283.326	-28.40
17/12/2010	16	1	53.02	26.51	68.93	Recalculated	1276.458	1284.5	8.0419
17/12/2010	16	2	49.25	24.63	64.02	Recalculated	1258.265	1276.001	17.735
17/12/2010	17	1	47.36	23.68	61.57	Recalculated	1216.81	1253.394	36.584
17/12/2010	17	2	46.23	23.12	60.1	Recalculated	1185.386	1219.867	34.480
17/12/2010	18	1	48.15	24.08	62.6	Recalculated	1147.262	1187.914	40.652
17/12/2010	18	2	48.39	24.2	62.91	Recalculated	1132.546	1153.972	21.425
17/12/2010	19	1	48.94	24.47	63.62	Recalculated	1118.117	1146.398	28.280
17/12/2010	19	2	48.71	24.36	63.32	Recalculated	1102.973	1165.893	62.920
17/12/2010	20	1	46.99	23.5	61.09	Recalculated	1093.121	1163.444	70.322
17/12/2010	20	2	45.64	22.82	59.33	Recalculated	1078.262	1114.19	35.928
17/12/2010	21	1	41.91	20.96	54.48	Recalculated	1054.721	1063.196	8.4749
17/12/2010	21	2	30.66	15.33	39.86	Recalculated	1031.488	1016.636	-14.85
17/12/2010	22	1	33.07	0	36.38	Recalculated	983.023	976.517	-6.505
17/12/2010	22	2	33.08	0	36.39	Recalculated	934.865	938.07	3.2050
17/12/2010	23	1	25.54	0	28.09	Recalculated	892.327	882.923	-9.403
17/12/2010	23	2	25.85	0	28.44	Recalculated	860.007	836.977	-23.02
17/12/2010	0	1	25.93	0	28.52	Recalculated	832.04	805.1	-26.93
17/12/2010	0	2	25.96	0	28.56	Recalculated	807.947	788.916	-19.03
17/12/2010	1	1	26.14	0	28.75	Recalculated	790.702	766.792	-23.90
17/12/2010	1	2	23.55	0	25.9	Recalculated	776.068	744.787	-31.28
17/12/2010	2	1	21.34	0	23.47	Recalculated	762.639	725.363	-37.27
17/12/2010	2	2	17.9	0	19.69	Recalculated	762.639	718.653	-43.98
17/12/2010	3	1	17.9	0	19.69	Recalculated	762.639	717.965	-44.67
17/12/2010	3	2	13.49	0	14.84	Recalculated	752.745	703.351	-49.39
17/12/2010	4	1	13.49	0	14.84	Recalculated	744.479	703.59	-40.88
17/12/2010	4	2	13.49	0	14.84	Recalculated	744.264	696.705	-47.55
17/12/2010	5	1	13.48	0	14.83	Recalculated	742.051	690.463	-51.58
17/12/2010	5	2	14.51	0	15.96	Recalculated	744.157	700.204	-43.95
17/12/2010	6	1	21.3	0	23.43	Recalculated	750.155	719.123	-31.03
17/12/2010	6	2	24.55	0	27	Recalculated	755.145	748.051	-7.093
17/12/2010	7	1	16.63	0	18.29	Recalculated	815.15	785.522	-29.62
17/12/2010	7	2	22.55	0	24.81	Recalculated	851.07	819.789	-31.28