Notice to Members
Notice No. 382
07/20/2006
New Margin Rates and Tiers for the New Financially Settled Electricity Contracts
EFFECTIVE DATE: Monday, July 24, 2006 (close of business)

FUTURES CONTRACTS:
Contract Name
Symbol
ERCOT Seller’s Choice Calendar Day Peak Swap (Platts Megawatt Daily) Contract 
VC
ERCOT Houston Calendar Day Peak Swap (Platts Megawatt Daily) Contract
HE
ERCOT North Calendar Day Peak Swap (Platts Megawatt Daily) Contract 
MC
ERCOT Hub Average MCPE Trading Hub Calendar Day Peak Swap Contract
VY
ERCOT Houston MCPE Trading Hub Calendar Day Peak Swap Contract
HY
ERCOT North MCPE Trading Hub Calendar Day Peak Swap Contract
MY
ERCOT Seller’s Choice Peak Swap (Platts Megawatt Daily) Contract
VT
ERCOT Houston Peak Swap (Platts Megawatt Daily) Contract
HT
ERCOT North Peak Swap (Platts Megawatt Daily) Contract 
MT
ERCOT Hub Average MCPE Trading Hub Peak Swap Contract 
VN
ERCOT Houston MCPE Trading Hub Peak Swap Contract
HN
ERCOT North MCPE Trading Hub Peak Swap Contract
MN
CONTRACT MONTHS: All Months

Outright (Scan) Spread Tiers for VT, HT, MT, VN, HN, and MN
 
Tiers
New
1
All Months


NYMEX Division Outright (Scan) Margin  on New Electricity Swap Contracts
 
Clearing Member / Maintenance Margin
Member Customer Initial Margin
Non-Member Customer Initial Margin
 
New
New
New
VC
$1,500
$1,650
$2,025
HE
$2,500
$2,750
$3,375
MC
$2,000
$2,200
$2,700
VY
$2,000
$2,200
$2,700
HY
$3,000
$3,300
$4,050
MY
$2,500
$2,750
$3,375
VT
$4,500
$4,950
$6,075
HT
$7,000
$7,700
$9,450
MT
$7,000
$7,700
$9,450
VN
$5,000
$5,500
$6,750
HN
$7,500
$8,250
$10,125
MN
$7,500
$8,250
$10,125

Spot month margins will decline automatically during the pricing month for VT, HT, MT, VN, HN, and MN. The spot month margin will decay by dividing one by the number of business days during the month.

For example, the September 2006 Contracts for VT, HT, MT, VN, HN, and MN have initial Clearing Member Margins of $4,500, $7,000, $7,000, $5,000, $7,500, and $7,500 respectively. Consequently, the spot month initial margin levels would be:

Erosion Process for The 1st Nearby Month
 
Date
VT
HT
MT
VN
HN
MN
1-Sep
4500
7000
7000
5000
7500
7500
5-Sep
4275
6650
6650
4750
7125
7125
6-Sep
4050
6300
6300
4500
6750
6750
7-Sep
3825
5950
5950
4250
6375
6375
8-Sep
3600
5600
5600
4000
6000
6000
11-Sep
3375
5250
5250
3750
5625
5625
12-Sep
3150
4900
4900
3500
5250
5250
13-Sep
2925
4550
4550
3250
4875
4875
14-Sep
2700
4200
4200
3000
4500
4500
15-Sep
2475
3850
3850
2750
4125
4125
18-Sep
2250
3500
3500
2500
3750
3750
19-Sep
2025
3150
3150
2250
3375
3375
20-Sep
1800
2800
2800
2000
3000
3000
21-Sep
1575
2450
2450
1750
2625
2625
22-Sep
1350
2100
2100
1500
2250
2250
25-Sep
1125
1750
1750
1250
1875
1875
26-Sep
900
1400
1400
1000
1500
1500
27-Sep
675
1050
1050
750
1125
1125
28-Sep
450
700
700
500
750
750
29-Sep
225
350
350
250
375
375


Intra-Commodity Spread Tiers for VT, HT, MT, VN, HN, and MN
 
Tiers
Months
1 All Months


NYMEX Division Intra-Commodity Spread Margins For All The Months on New Electricity Swap Contracts
 
Commodity
Clearing Member / Maintenance Margin
Member Customer Initial Margin
Non-Member Customer Initial Margin
 
New
New
New
VT
$250
$275
$338
HT
$250
$275
$338
MT
$250
$275
$338
VN
$250
$275
$338
HN
$250
$275
$338
MN
$250
$275
$338


NYMEX Division Inter-Commodity Spread Credits on New Electricity Swap Contracts
 
Spread
Priority
Ratio
% Credit
HE:MC
119
1:01
95
HE:VC
120
1:01
95
MC:VC
121
1:01
95
HY:VY
122
1:01
95
MY:VY
123
1:01
95
HT:MT
124
1:01
95
HT:VT
125
1:01
95
MT:VT
126
1:01
95
HN:VN
127
1:01
95
MN:VN
128
1:01
95
HY:MY
195
1:01
85
HN:MN
196
1:01
85
Should you have any questions or require any further information, please contact exchangeinfo@nymex.com