Suez Weekly Market Monitor
Derek Mumford
Derek.mumford@suezenergyna.com
October 4, 2007
ERCOT Power
ERCOT power prices began the week on a steady path
and decreased at midweek. The week ended with
prices reverting to increased marks.
ERCOT Prompt month deliveries closed at $51.39/MWh,
decreasing $0.20/MWh or 0.38%.
ERCOT '09 finished the week at $72.21/MWh down,
0.18%.
ERCOT '10 closed the week at $70.60/MWh, down 0.09%.
The prompt month for the Houston Zone finished at $52.64/
MWh a decrease of 0.37% and the prompt month North
Zone finished at $52.17/MWh down 0.38%.

NYISO-NEPOOL Power
Northeast power prices started the week on a steady
path and decreased at midweek. It continued on the
same path as the week came to an end.
Prompt month prices for the Northeast decreased by 17%
to 23% compared to 3 months ago for the same trading
month.
NYISO Zone J prompt month closed the week at $83.05/
MWh decreasing $0.15/MWh, a loss of 0.18% from last
week.
NYISO Zone A prompt month finished at $58.30/MWh, a
loss of $0.80/MWh or 1.37%.
Massachusetts NEMA prompt month closed at $69.66/
MWh, an increase of 0.22% or $0.15/MWh.
Massachusetts SEMA prompt month finished the week at
$69.50/MWh, increasing 0.22% or $0.15/MWh.
$61.90/MWh, decreasing 2.67% or $1.65/MWh.

PJM Power
PJM power prices started the week at a constant rate
and decreased slightly at mid-week. The week closed
with prices staying on a descending path.
Cinergy prompt month finished the week at $48.05/MWh, a
change of 0.83%, decreasing $0.40/MWh.
NI Hub prompt month finished the week with a loss of
$0.85/MWh closing at $47.00/MWh, a change of 1.81%.
PJM West Hub prompt month gained $0.15/MWh closing
at $55.75/MWh, a change of 0.27%.
PSEG prices for the prompt month closed at $55.75/
MWh, a change of 0.27%, down $0.15/MWh.
Compared to 3 months ago, PJM prices are 17% to 19%
lower for the same trading period.

Natural Gas Market
Natural gas prices decreased
sharply as the
week began. This declining
path continued throughout the
week.
NYMEX prices for the prompt
month finished the week at
$6.87/MMBtu, an decrease of
1.75% or $0.12/MMBtu.
Nov. 07 prices are approximately
20% lower than 3
months ago.
NYMEX Cal. '08 closed at
$7.95/MMBtu, a change of
0.49%, down $0.04/MMBtu.
NYMEX Cal '09 finished the
week at $8.27/MMBtu; NYMEX
Cal '10 closed at $8.09/MMBtu.
Algonquin, Transco Z6, and
Tetco M3 prompt month closed
at $0.90/MMBtu, $1.48/MMBtu,
and $0.95/MMbtu respectively.

Natural Gas Storage: Gas in Storage Increased 74 Bcf
Working gas in storage was
3,206 Bcf as of Friday, September
21, 2007, according to
EIA estimates.
This represents a net increase
of 74 Bcf from the previous
week.
Stocks were 37 Bcf less than
last year at this time and 238
Bcf above the 5-year average
of 2,968 Bcf.
In the East Region, stocks
were 101 Bcf above the 5-year
average following net injections
of 44 Bcf.
Stocks in the Producing Region
were 110 Bcf above the 5-year
average of 841 Bcf after a net
injection of 20 Bcf.
Stocks in the West Region
were 27 Bcf above the 5-year
average after a net addition of
10 Bcf.
At 3,206 Bcf, total working gas
is within the 5-year historical
range. (Sources: EIA)

Derek Mumford
Energy Analyst
Suez Energy Resources
October 4, 2007
Derek.mumford@suezenergyna.com