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 Sep 12, 2011 02:35:52 PM)
10/09/2011	8	1	35.3	17.65	45.89	Recalculated	1010.166	880.73	-129.4
10/09/2011	8	2	35.3	17.65	45.89	Recalculated	1028.573	904.019	-124.5
10/09/2011	9	1	35.3	17.65	45.89	Recalculated	1032.698	908.561	-124.1
10/09/2011	9	2	33.34	16.67	43.34	Recalculated	1018.068	894.866	-123.2
10/09/2011	10	1	29.79	14.9	38.73	Recalculated	1003.25	878.603	-124.6
10/09/2011	10	2	29.79	14.9	38.73	Recalculated	986.603	873.362	-113.2
10/09/2011	11	1	29.79	14.9	38.73	Recalculated	972.99	877.631	-95.35
10/09/2011	11	2	30.79	15.4	40.03	Recalculated	961.036	878.944	-82.09
10/09/2011	12	1	30.79	15.4	40.03	Recalculated	953.173	874.422	-78.75
10/09/2011	12	2	29.79	14.9	38.73	Recalculated	950.028	867.908	-82.12
10/09/2011	13	1	29.79	14.9	38.73	Recalculated	955.692	855.065	-100.6
10/09/2011	13	2	31.79	15.9	41.33	Recalculated	936.695	858.723	-77.97
10/09/2011	14	1	31.79	15.9	41.33	Recalculated	931.969	855.027	-76.94
10/09/2011	14	2	31.79	15.9	41.33	Recalculated	927.596	849.634	-77.96
10/09/2011	15	1	31.79	15.9	41.33	Recalculated	931.889	855.57	-76.31
10/09/2011	15	2	34.58	17.29	44.95	Recalculated	931.119	859.232	-71.88
10/09/2011	16	1	31.79	15.9	41.33	Recalculated	959.818	877.986	-81.83
10/09/2011	16	2	38.64	19.32	50.23	Recalculated	963.649	921.202	-42.44
10/09/2011	17	1	39	19.5	50.7	Recalculated	997.206	921.864	-75.34
10/09/2011	17	2	49.66	24.83	64.56	Recalculated	1027.776	969.045	-58.73
10/09/2011	18	1	54.55	27.28	70.91	Recalculated	1070.334	1031.614	-38.72
10/09/2011	18	2	58.85	29.42	76.5	Recalculated	1091.993	1073.721	-18.27
10/09/2011	19	1	56.43	28.22	73.36	Recalculated	1092.629	1030.278	-62.35
10/09/2011	19	2	39	19.5	50.7	Recalculated	1096.005	979.384	-116.6
10/09/2011	20	1	33.63	16.82	43.72	Recalculated	1070.568	934.189	-136.3
10/09/2011	20	2	30.79	15.4	40.03	Recalculated	1066.963	902.032	-164.9
10/09/2011	21	1	29.79	14.9	38.73	Recalculated	1033.194	863.125	-170.0
10/09/2011	21	2	26.4	13.2	34.32	Recalculated	1019.599	826.346	-193.2
10/09/2011	22	1	17.52	0	19.27	Recalculated	977.723	811.142	-166.5
10/09/2011	22	2	17.57	0	19.33	Recalculated	913.254	779.004	-134.2
10/09/2011	23	1	17.42	0	19.16	Recalculated	875.886	735.122	-140.7
10/09/2011	23	2	17.39	0	19.13	Recalculated	828.877	705.423	-123.4
10/09/2011	0	1	17.38	0	19.12	Recalculated	830.382	690.056	-140.3
10/09/2011	0	2	17.37	0	19.11	Recalculated	798.291	668.39	-129.9
10/09/2011	1	1	17.37	0	19.11	Recalculated	787.462	649.525	-137.9
10/09/2011	1	2	17.39	0	19.13	Recalculated	777.743	635.114	-142.6
10/09/2011	2	1	17.38	0	19.12	Recalculated	763.667	628.809	-134.8
10/09/2011	2	2	17.36	0	19.1	Recalculated	749.963	620.385	-129.5
10/09/2011	3	1	17.36	0	19.1	Recalculated	760.316	619.441	-140.8
10/09/2011	3	2	17.36	0	19.1	Recalculated	751.368	609.317	-142.0
10/09/2011	4	1	17.37	0	19.11	Recalculated	754.043	611.553	-142.4
10/09/2011	4	2	17.41	0	19.15	Recalculated	756.479	619.127	-137.3
10/09/2011	5	1	17.41	0	19.15	Recalculated	766.12	633.34	-132.7
10/09/2011	5	2	17.45	0	19.2	Recalculated	770.506	643.981	-126.5
10/09/2011	6	1	17.51	0	19.26	Recalculated	815.025	662.954	-152.0
10/09/2011	6	2	17.46	0	19.21	Recalculated	845.618	691.013	-154.6
10/09/2011	7	1	17.42	0	19.16	Recalculated	856.378	720.187	-136.1
10/09/2011	7	2	17.37	0	19.11	Recalculated	900.264	771.062	-129.2