Auction Date	Average ROC Price	Lowest ROC Price	Total No' of ROCs	Co-Fired ROCs
24 January 2012	£45.18	£43.00	37,331	0
22 December 2011	£45.67	£43.00	94,626	0
24 November 2011	£46.03	£45.40	79,576	14,098
25 October 2011	£46.00	£45.85	48,794	1,124
30 September 2011	£45.85	£44.00	59,356	3,529
31 August 2011	£45.37	£45.00	23,792	2,286
28 July 2011	£46.87	£35.00	79,243	22,375
28 June 2011	£51.04	£50.00	106,400	5,111
25 May 2011	£51.24	£50.85	71,446	1,715
27 April 2011	£50.54	£40.20	53,837	12,724
29 March 2011	£49.89	£49.15	22,457	233
24 February 2011	£48.80	£48.25	31,033	9,457
27 January 2011	£48.06	£47.85	42,290	1,261
22 December 2010	£48.34	£47.75	53,078	3,674
25 November 2010	£48.12	£47.00	51,721	2,020
27 October 2010	£46.92	£45.50	56,751	2,171
28 September 2010	£45.49	£44.25	109,978	7,866
24 June 2010	£49.16	£48.00	243,412	5,081
25 March 2010	£49.24	£46.50	97,688	8,267
19 January 2010	£46.25	£45.00	56,382	0
13 October 2009	£45.52	£45.50	97,842	0
7 July 2009	£52.90	£52.65	150,506	5,336
7 April 2009	£52.65	£52.50	148,333	7,232
13 January 2009	£51.81	£51.75	108,899	6,938
9 October 2008	£51.34	£51.20	101,185	10,143
8 July 2008	£53.27	£53.10	143,443	4,025
10 April 2008	£51.39	£51.25	83,563	0
8 January 2008	£49.95	£49.75	64,294	3,052
9 October 2007	£49.27	£49.11	90,720	2,265
17 July 2007	£48.12	£47.50	59,170	7,383
24 April 2007	£47.51	£47.50	74,343	627
22 January 2007	£46.17	£46.00	49,446	45
24 October 2006	£44.81	£44.50	68,425	14,162
20 July 2006	£40.62	£40.60	227,909	2,000
20 April 2006	£40.65	£40.60	261,201	500
19 January 2006	£38.42	£37.75	197,930
20 October 2005	£39.16	£35.40	216,177
20 July 2005	£45.72	£45.50	197,944
20 April 2005	£46.07	£45.00	180,083
20 January 2005	£47.18	£46.90	151,348
26 October 2004	£46.12	£45.90	129,919
21 July 2004	£52.07	£51.76	176,759
20 April 2004	£49.11	£48.80	166,643
20 January 2004	£47.46	£47.30	96,449
21 October 2003	£45.93	£44.80	123,979
16 July 2003	£48.21	£47.71	158,512
15 April 2003	£46.76	£46.75	191,897
16 January 2003	£47.46	£45.51	64,337
17 October 2002	£47.12	£47.00	85,404
		Total	5,248,520