Suez Weekly Market Monitor
Derek Mumford
Derek.mumford@suezenergyna.com
June 13, 2007
ERCOT Power
ERCOT power prices began the week at a declining
rate, it leveled out by mid week. Prices continued
down a declining path as the week came to an end.
ERCOT Prompt month deliveries closed at $91.38/MWh,
decreasing $5.09/MWh or 5.57%.
ERCOT '08 finished the week at $79.32/MWh down 1.44%.
ERCOT '09 closed the week at $77.02MWh down 1.57%.
The prompt month for the Houston Zone finished at $96.88/
MWh a decrease of 6.08% and the prompt month North
Zone finished at $91.38/MWh down 5.57%.

NYISO-NEPOOL Power
Northeast power prices started the week decreasing
and stayed steady as we entered the middle of the
week, prices slumped further as the week came to an end.
Prompt month prices for the Northeast are 0% to 5% more
than 3 months ago for the same trading month.
NYISO Zone J prompt month closed the week at $128.25/
MWh decreasing $6.95/MWh, a change of 5.42%.
NYISO Zone A prompt month finished at $73.50/MWh a
loss of $6.20/MWh or 8.44%.
Massachusetts NEMA prompt month closed at $97.00/
MWh a change of 4.20% or $4.07/MWh.
Massachusetts SEMA prompt month finished the week at
$88.00/MWh, decreasing 4.62%.

PJM Power
PJM power prices started the week decreasing and
leveled off by mid week. The week closed at a lower
price compared to last week.
Cinergy prompt month finished the week at $81.72/MWh, a
change of 1.53%, decreasing $1.25/MWh.
NI Hub prompt month finished the week with a loss of
$3.25/MWh to close at $79.60/MWh, a change of 4.08%.
PJM West Hub prompt month lost $1.52/MWh closing at
$99.50/MWh, a change of 1.53%.
PSEG prices for the prompt month closed at $121.50/MWh,
a change of 1.25% or $1.52/MWh.
Compared to 3 months ago, PJM prices are 3% to 7%
higher for the same trading period.

Natural Gas Market
Natural gas prices started
the week at a decreasing
rate but increased briefly at mid
week. The week ended with
prices lower than last week.
NYMEX prices for the prompt
month finished the week at
$7.66/MMBtu a decrease of
2.81% or $0.22/MMBtu.
June 2007 prices are 2.21%
higher than 3 months ago for
the same delivery period.
NYMEX Bal. '07 closed at
$8.27/MMBtu a change of
2.12%, down $0.18/MMBtu.
NYMEX Cal '08 finished the
week at $8.93/MMBtu; NYMEX
Cal '09 closed at $8.69/MMBtu.
Algonquin, Transco Z6, and
Tetco M3 prompt month closed
at $1.38/MMBtu, $1.69/MMBtu,
and $1.19/MMbtu respectively.

Natural Gas Storage: Gas in Storage Increased 18 Bcf
Working gas in storage was
2,163 Bcf as of Friday, June 1,
2007, according to EIA estimates.
This represents a net increase
of 110 Bcf from the previous
week.
Stocks were 146 Bcf less than
last year at this time and 366
Bcf above the 5-year average
of 1,797 Bcf.
In the East Region, stocks
were 128 Bcf above the 5-year
average following net injections
of 66 Bcf.
Stocks in the Producing Region
were 179 Bcf above the 5-year
average of 617 Bcf after a net
injection of 28 Bcf.
Stocks in the West Region
were 59 Bcf above the 5-year
average after a net addition of
16 Bcf.
At 2,163 Bcf, total working gas
is within the 5-year historical
range.
(Sources: EIA)

Derek Mumford
Energy Analyst
Suez Energy Resources
June 13, 2007
Derek.mumford@suezenergyna.com