P-4A

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Time Weighted/Integrated Real Time LBMP - Zonal

--- LBMP $

--- Marginal Cost of Losses

--- Marginal Cost of Congestion

--- Scarcity Pricing In Effect (Y/N)

Zonal Prices

Date: 07/20/2008

Name PTID	00:00 EDT	01:00 EDT	02:00 EDT	03:00 EDT	04:00 EDT	05:00 EDT	06:00 EDT	07:00 EDT	08:00 EDT	09:00 EDT	10:00 EDT	11:00 EDT	12:00 EDT	13:00 EDT	14:00 EDT	15:00 EDT	16:00 EDT	17:00 EDT	18:00 EDT	19:00 EDT	20:00 EDT	21:00 EDT	22:00 EDT	23:00 EDT

CAPITL 61757	116.51	106.92	113.44	112.92	113.53	91.12	99.13	121.96	139.15	146.40	147.37	142.64	143.64	142.42	145.88	144.73	-213.48	48.88	64.40	60.09	57.08	40.48	46.68	110.84
	5.60	4.88	4.92	4.71	4.74	3.96	4.35	6.31	7.65	8.61	7.86	8.59	8.56	8.25	8.51	8.31	-13.16	2.36	3.52	3.35	3.03	1.89	2.18	5.64
	0.00	0.00	0.00	0.00	0.00	0.00	0.00	-1.41	0.08	0.61	-19.26	0.41	0.42	0.05	0.49	0.36	-23.35	-7.98	-6.50	-4.96	-4.93	-7.08	-5.68	-1.76
	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N

CENTRL 61754	109.01	99.54	105.22	104.84	105.53	84.71	92.23	111.22	127.61	133.44	119.99	132.26	133.79	134.11	137.19	136.27	-226.01	38.84	54.17	51.45	48.89	31.47	38.42	101.23
	-1.90	-2.50	-3.29	-3.37	-3.26	-2.45	-2.55	-3.19	-3.85	-4.11	-2.20	-1.62	-1.14	-0.05	-0.01	-0.01	-2.33	0.30	-0.21	-0.33	-0.23	-0.04	-0.42	-2.21
	0.00	0.00	0.00	0.00	0.00	0.00	0.00	-0.16	0.12	0.85	-1.94	0.58	0.57	0.07	0.66	0.50	0.01	0.00	0.00	0.00	0.00	0.00	0.00	0.00
	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N

DUNWOD 61760	121.85	111.82	118.62	117.95	118.32	95.02	103.33	125.90	142.46	149.24	146.68	147.86	149.77	149.13	152.82	151.99	282.80	218.96	204.42	167.51	162.90	189.89	168.02	152.38
	10.94	9.78	10.10	9.74	9.54	7.86	8.55	10.60	10.99	11.62	12.01	13.92	14.80	14.97	15.59	15.67	-22.83	3.72	5.29	5.06	4.73	3.01	3.67	9.73
	0.00	0.00	0.00	0.00	0.00	0.00	0.00	-1.07	0.11	0.78	-14.42	0.53	0.53	0.06	0.63	0.46	-529.30	-176.70	-144.76	-110.67	-109.04	-155.37	-125.52	-39.21
	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N

GENESE 61753	106.94	97.11	102.26	101.98	102.47	82.62	89.72	107.28	123.02	133.98	117.13	131.07	133.06	130.07	136.65	134.48	-219.99	37.80	52.43	49.74	47.38	30.54	37.19	98.41
	-3.97	-4.93	-6.26	-6.23	-6.31	-4.55	-5.07	-7.08	-9.20	-9.02	-6.68	-6.55	-5.59	-4.52	-4.93	-5.05	3.63	-0.73	-1.95	-2.05	-1.75	-0.97	-1.64	-5.03
	0.00	0.00	0.00	0.00	0.00	0.00	0.00	-0.13	-0.63	-4.61	-3.57	-3.14	-3.15	-0.37	-3.72	-2.75	-0.04	0.00	0.00	0.00	0.00	0.00	0.00	0.00
	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N

H Q 61844	108.87	100.47	107.09	106.78	100.70	102.88	93.63	112.55	120.68	99.48	73.72	131.32	131.87	130.18	133.56	132.48	-216.74	139.63	52.91	50.41	47.87	30.69	85.00	101.52
	-2.04	-1.57	-1.43	-1.42	-1.38	-1.32	-1.15	-1.69	-1.32	-2.12	-2.15	-3.15	-3.63	-4.04	-4.30	-4.30	6.93	-4.43	-1.47	-1.38	-1.25	-0.82	-1.39	-1.92
	0.00	0.00	0.00	0.00	5.62	-2.54	0.00	0.00	-4.86	37.20	26.15	0.00	0.00	0.00	0.00	0.00	0.00	-5.70	0.00	0.00	0.00	0.00	-13.40	0.00
	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N

HUD VL 61758	121.04	111.05	117.79	117.17	117.58	94.32	102.60	125.12	141.83	148.78	146.07	147.49	149.46	149.05	152.81	152.01	219.42	193.60	183.67	151.60	147.23	167.62	150.07	146.44
	10.13	9.00	9.27	8.96	8.79	7.15	7.81	9.82	10.37	11.16	11.51	13.55	14.49	14.90	15.58	15.70	-23.31	3.87	5.46	5.15	4.80	3.06	3.62	9.37
	0.00	0.00	0.00	0.00	0.00	0.00	0.00	-1.06	0.11	0.78	-14.32	0.53	0.53	0.06	0.63	0.46	-466.39	-151.20	-123.83	-94.66	-93.30	-133.05	-107.62	-33.63
	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N

LONGIL 61762	125.53	118.77	122.13	121.34	121.08	97.66	106.07	128.50	143.55	151.40	150.04	150.98	153.08	152.33	155.80	155.33	280.85	219.69	204.97	167.96	163.41	190.60	169.09	155.47
	14.23	12.82	13.54	13.13	12.29	10.49	11.29	13.19	12.08	13.78	15.36	17.04	18.11	18.17	18.57	19.01	-25.46	4.27	5.68	5.38	5.17	3.55	4.61	12.19
	-0.39	-3.91	-0.07	0.00	0.00	0.00	0.00	-1.07	0.11	0.78	-14.44	0.53	0.53	0.06	0.63	0.46	-529.98	-176.89	-144.91	-110.79	-109.12	-155.54	-125.65	-39.84
	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N

MHK VL 61756	113.55	104.07	110.44	110.00	110.59	88.60	96.45	116.77	134.61	141.39	126.09	138.56	139.55	138.82	142.10	141.02	-190.30	53.28	67.32	62.05	59.34	44.43	49.19	108.48
	2.64	2.03	1.93	1.79	1.80	1.44	1.67	2.38	3.12	3.62	3.72	4.52	4.47	4.65	4.73	4.61	-7.49	1.34	1.77	1.68	1.65	1.08	1.05	2.16
	0.00	0.00	0.00	0.00	0.00	0.00	0.00	-0.16	0.09	0.63	-2.13	0.43	0.42	0.05	0.49	0.36	-40.86	-13.41	-11.18	-8.58	-8.56	-11.85	-9.31	-2.88
	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N

MILLWD 61759	121.52	111.47	118.24	117.60	117.94	94.69	102.99	125.57	142.13	149.07	146.63	147.80	149.77	149.25	153.00	152.22	276.22	216.65	202.58	166.11	161.48	187.82	166.32	151.74
	10.61	9.43	9.72	9.39	9.16	7.52	8.21	10.26	10.66	11.44	11.87	13.86	14.80	15.10	15.76	15.90	-23.30	3.83	5.41	5.15	4.80	3.06	3.68	9.63
	0.00	0.00	0.00	0.00	0.00	0.00	0.00	-1.07	0.11	0.77	-14.52	0.53	0.53	0.06	0.62	0.46	-523.19	-174.29	-142.79	-109.17	-107.56	-153.25	-123.80	-38.67
	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N

N.Y.C. 61761	184.71	172.12	130.67	118.97	119.38	95.91	104.30	127.01	154.96	184.82	191.55	197.23	200.14	200.22	203.76	203.45	319.00	258.86	247.25	215.43	211.63	197.52	209.53	203.95
	12.06	10.84	11.15	10.76	10.60	8.74	9.51	11.70	12.11	12.60	12.86	14.89	15.67	15.72	16.05	16.19	-22.33	3.83	5.45	5.25	4.90	3.09	3.85	10.28
	-61.73	-59.23	-11.01	0.00	0.00	0.00	0.00	-1.07	-11.26	-33.83	-58.45	-47.87	-48.97	-50.28	-49.86	-50.48	-565.01	-216.50	-187.42	-158.39	-157.60	-162.93	-166.85	-90.23
	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N

NORTH 61755	108.40	100.16	106.81	106.50	107.12	85.93	93.50	112.23	129.99	136.77	117.62	131.00	131.19	129.23	132.49	131.32	-214.77	37.06	52.62	50.18	47.71	30.54	37.80	100.99
	-2.51	-1.88	-1.71	-1.71	-1.66	-1.24	-1.28	-2.01	-1.59	-1.63	-2.62	-3.47	-4.31	-4.99	-5.37	-5.46	8.90	-1.47	-1.75	-1.60	-1.41	-0.97	-1.03	-2.45
	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N

NPX 61845	117.52	107.94	114.56	114.00	108.08	110.00	100.20	122.69	128.00	110.09	125.00	129.95	143.79	142.78	146.74	145.72	-52.39	153.29	109.83	94.93	91.32	89.18	120.00	124.03
	6.61	5.90	6.04	5.79	6.01	5.81	5.42	7.18	6.00	9.02	6.40	7.81	8.74	8.61	9.41	9.33	-13.61	9.31	3.52	3.44	3.08	1.94	4.27	6.53
	0.00	0.00	0.00	0.00	5.62	-2.54	0.00	-1.27	-4.86	37.73	-16.59	11.38	0.45	0.05	0.53	0.39	-184.90	-5.62	-51.93	-39.70	-39.11	-55.73	-42.75	-14.06
	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N

O H 61846	100.36	95.10	80.10	95.75	95.10	108.00	95.11	99.55	106.34	51.66	60.00	82.68	84.18	113.05	80.43	89.67	-203.17	120.78	48.06	45.63	43.52	28.06	87.00	91.54
	-10.55	-8.31	-8.16	-12.46	-13.97	-10.44	-9.09	-14.84	-15.66	-23.28	-13.67	-18.47	-17.93	-17.25	-17.95	-17.87	20.96	-17.81	-6.32	-6.16	-5.60	-3.44	-9.19	-11.90
	0.00	-11.76	-0.96	0.00	-1.38	-16.78	-5.16	-0.15	-4.86	63.86	28.33	33.31	33.39	3.92	39.48	29.24	0.46	-0.23	0.00	0.00	0.00	0.00	-23.21	0.00
	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N

PJM 61847	104.24	94.74	99.42	98.80	104.66	107.38	87.69	108.66	125.98	100.00	103.34	120.62	122.58	129.87	126.25	127.37	116.97	152.00	157.77	119.36	116.54	125.00	135.00	100.00
	-6.67	-7.30	-9.10	-9.41	2.58	3.18	-7.09	-6.34	3.98	3.57	3.01	-7.44	-6.50	-3.60	-4.02	-3.78	3.35	8.99	3.51	-2.53	-1.66	1.21	2.43	1.09
	0.00	0.00	0.00	0.00	5.62	-2.54	0.00	-0.77	-4.86	42.38	1.67	6.40	6.42	0.75	7.59	5.62	-337.28	-4.64	-74.89	-70.11	-69.08	-90.55	-59.58	-42.94
	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N

WEST 61752	102.52	92.72	97.34	97.32	97.93	79.32	85.92	101.66	108.39	75.68	91.21	89.47	91.25	118.43	88.62	96.98	-210.44	36.05	49.75	47.13	44.91	28.98	35.24	93.61
	-8.39	-9.32	-11.18	-10.88	-10.85	-7.84	-8.86	-12.75	-16.92	-17.52	-13.50	-14.24	-13.43	-12.17	-12.80	-12.80	13.65	-2.49	-4.63	-4.66	-4.21	-2.53	-3.59	-9.83
	0.00	0.00	0.00	0.00	0.00	0.00	0.00	-0.17	6.26	45.19	15.54	30.76	30.82	3.62	36.44	26.99	0.42	0.00	0.00	0.00	0.00	0.00	0.00	0.00
	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N	N