Exhibit 99(a)

Examples of Wholesale Energy, Fuel and Emission Allowance Price Fluctuations

2006 through 2010

Wholesale Energy:

PJM West Hub* Power Price - $/MWh

Year	High		Month	Low			Month
2006	$	769.90	August	$	(17.11)	**	May
2007	$	571.60	August	$	(12.67)	**	May
2008	$	475.58	June	$	(43.19)	**	September
2009	$	246.61	February	$	(12.48)	**	September
2010	$	362.90	December	$	(26.25)	**	May

*      A common trading hub for PJM.

**    Occurs during times of low demand for electricity when generation levels of generating units are reduced to their normal minimums.

Mid-C* Power Price - $/MWh

Year	High		Month	Low			Month
2006	$	189.87	July	$	(2.00	)**	May
2007	$	197.79	July	$	0.86		March
2008	$	101.29	April	$	(7.50	)**	June
2009	$	111.53	December	$	0.28		June
2010	$	53.41	November	$	(2.00	)**	June

*      A common trading hub for Northwestern U.S.

**    Occurs when generation levels from hydroelectric units exceed demand due to excess water runoff.

Fuel:

NYMEX Coal (1% sulfur content, 12,000 Btu) Price - $/ton

Year	High		Month	Low		Month
2006	$	57.75	February	$	37.50	November
2007	$	56.80	November	$	38.75	January
2008	$	143.25	July	$	56.17	January
2009	$	68.25	January	$	42.25	April
2010	$	79.98	December	$	49.38	February

NYMEX Natural Gas Price - $/million Btu

Year	High		Month	Low		Month
2006	$	10.63	January	$	4.20	September
2007	$	9.90	May	$	5.20	September
2008	$	13.69	August	$	5.28	December
2009	$	6.24	February	$	2.41	October
2010	$	6.11	February	$	3.21	November

Residual Oil (1% sulfur content) Price @ NY Harbor - $/barrel

Year	High		Month	Low		Month
2006	$	54.25	April	$	35.00	October
2007	$	72.52	December	$	37.23	January
2008	$	119.70	July	$	28.40	December
2009	$	44.95	December	$	33.70	March
2010	$	79.85	May	$	62.75	May

Sulfur Dioxide Emission Allowances:

SO2 Emission Allowance Price - $/allowance

Year	High		Month	Low		Month
2006	$	1,598	January	$	445	November
2007	$	715	June	$	405	January
2008	$	535	January	$	88	July
2009	$	215	January	$	56	April
2010	$	80	February	$	5	July, November