Suez Weekly Market Monitor
Derek Mumford
Derek.mumford@suezenergyna.com
September 11, 2007
ERCOT Power
ERCOT power prices began the week at a declining
rate and reached its peak at midweek. The week
ended with prices decreasing back to its original levels.
ERCOT Prompt month deliveries closed at $46.10/MWh,
increasing $0.64/MWh or 1.40%.
ERCOT ‘09 finished the week at $70.89/MWh up, 1.22%.
ERCOT ‘10 closed the week at $69.80/MWh, up 1.89%.
The prompt month for the Houston Zone finished at $47.85/
MWh an increase of 0.30% and the prompt month North
Zone finished at $46.10/MWh up 1.40%.

NYISO-NEPOOL Power
Northeast power prices stayed at the same levels
throughout the week.
Prompt month prices for the Northeast decreased by 18%
to 27% compared to 3 months ago for the same trading
month.
NYISO Zone J prompt month closed the week at $73.16/
MWh decreasing $0.63/MWh, a loss of 0.86% from the last
week.
NYISO Zone A prompt month finished at $53.85/MWh, a
gain of $0.20/MWh or 0.37%.
Massachusetts NEMA prompt month closed at $59.98/
MWh, an increase of 0.25% or $0.15/MWh.
Massachusetts SEMA prompt month finished the week at
$59.10/MWh, increasing 0.25% or $0.15/MWh.

PJM Power
PJM power prices started the week at constant rate and
increased slightly by mid-week. The week closed with
prices staying on this slightly increasing path.
Cinergy prompt month finished the week at $45.25/MWh, a
change of 1.10%, increasing $0.50/MWh.
NI Hub prompt month finished the week with a loss of
$2.68/MWh closing at $43.80/MWh, a change of 6.12%.
PJM West Hub prompt month gained $0.20/MWh closing
at $50.35/MWh, a change of 0.40%.
PSEG prices for the prompt month closed at $62.35/MWh,
a change of 0.32% or $0.20/MWh.
Compared to 3 months ago, PJM prices are 19% to 22%
lower for the same trading period.

Natural Gas Market
Natural gas prices decreased
as the week began
and peaked at mid-week.
The week closed with prices
returning to its declining path.
NYMEX prices for the prompt
month finished the week at
$5.65/MMBtu, a decrease of
1.22% or $0.07/MMBtu.
Oct. 07 prices are approximately
25% lower than 3
months ago.
NYMEX Cal. ‘08 closed at
$7.75/MMBtu, a change of
0.19%, up $0.01/MMBtu.
NYMEX Cal ‘09 finished the
week at $8.26/MMBtu; NYMEX
Cal ‘10 closed at $8.14/MMBtu.
Algonquin, Transco Z6, and
Tetco M3 prompt month closed
at $1.22/MMBtu, $1.59/MMBtu,
and $1.02/MMbtu respectively.

Natural Gas Storage: Gas in Storage Increased 106 Bcf
Working gas in storage was
3,005 Bcf as of Friday, August
31, 2007, according to EIA
estimates.
This represents a net increase
of 36 Bcf from the previous
week.
Stocks were 39 Bcf higher than
last year at this time and 284
Bcf above the 5-year average
of 2,721 Bcf.
In the East Region, stocks
were 126 Bcf above the 5-year
average following net injections
of 39 Bcf.
Stocks in the Producing Region
were 123 Bcf above the 5-year
average of 780 Bcf after a net
injection of 1 Bcf.
Stocks in the West Region
were 34 Bcf above the 5-year
average after a net drawdown
of 4 Bcf.
At 3,005 Bcf, total working gas
is above the 5-year historical
range. (Sources: EIA)

Derek Mumford
Energy Analyst
Suez Energy Resources
Sept 11, 2007
Derek.mumford@suezenergyna.com