Suez Weekly Market Monitor
Derek Mumford
Derek.mumford@suezenergyna.com
March 21, 2007
ERCOT Power
ERCOT power prices remained steady in the beginning
of the week and jumped mid week before closing
lower than the previous week.
ERCOT Prompt month deliveries closed at $59.20/MWh,
decreasing $0.79/MWh or 1.34%.
ERCOT ‘08 finished the week at $72.83/MWh down 0.02%.
ERCOT ’09 closed the week at $70.88/MWh up 0.18%.
The prompt month for the Houston Zone finished at $63.33/
MWh an decrease of 1.25% and the prompt month North
Zone finished at $61.45/MWh down 1.70%.

NYISO—NEPOOL Power
Northeast power prices increased mid week, closing
lower compared to last week.
Prompt month prices for the Northeast are 7% to 9% less
than 3 months ago for the same trading month.
NYISO Zone J prompt month closed the week at $84.50/
MWh decreasing $2.15/MWh, a change of 2.54%.
NYISO Zone A prompt month finished at $59.25/MWh a
loss of $1.75/MWh or 2.95%
Massachusetts NEMA prompt month closed at $75.75/
MWh a change of 0.73% or $0.55/MWh.
Massachusetts SEMA prompt month finished the week at
$70.30/MWh, increasing 1.85%.

PJM Power
PJM power prices started the week steady and jumped
mid week while closing up compared to last week.
Cinergy prompt month finished the week at $54.00/MWh, a
change of 1.85% increasing $1.00/MWh.
NI Hub prompt month finished up $1.80/MWh to close at
$53.65/MWh, a change of 3.36%.
PJM West Hub prompt month loss $0.30/MWh closing at
$61.50/MWh, a change of 0.49%.
PSEG prices for the prompt month closed at $68.80/MWh,
a change of 2.11% or $1.45/MWh.
Compared to 3 months ago, PJM prices are 4% to 5%
lower for the same trading period.

Natural Gas Market
Natural gas prices started the week with a decrease
and took a slower decline at the end of the week.
NYMEX prices for the prompt month finished the week at
$6.92/MMBtu a decrease of 2.30% or $0.16/MMBtu.
March 2007 prices are 6.82%
lower than 3 months ago for the
same delivery period.
NYMEX Bal. ‘07 closed at
$7.58/MMBtu a change of
1.87%, down $0.14/MMBtu.
NYMEX Cal ‘08 finished the
week at $8.21/MMBtu; NYMEX
Cal ‘09 closed at $7.99/MMBtu.
Algonquin, Transco Z6, and
Tetco M3 prompt month closed
at $1.35/MMBtu, $1.59/MMBtu,
and $1.09/MMbtu respectively..

Natural Gas Storage: Gas in Storage Decreased 115 Bcf
Working gas in storage was
1,516 Bcf as of Friday, March
9, 2007, according to EIA estimates.
This represents a net
decline of 115 Bcf from the
previous week.
Stocks were 324 Bcf less than
last year at this time and 158
Bcf above the 5-year average
of 1,358 Bcf.
In the East Region, stocks
were 35 Bcf above the 5-year
average following net withdrawals
of 92 Bcf.
Stocks in the Producing Region
were 103 Bcf above the 5-year
average of 461 Bcf after a net
withdrawal of 22 Bcf. Stocks in
the West Region were 19 Bcf
above the 5-year average after
a net drawdown of 1 Bcf.
At 1,516 Bcf, total working gas
is within the 5-year historical
range.
(Source: EIA)

Derek Mumford
Energy Analyst
Suez Energy Resources
Derek.mumford@suezenergyna.com