Notice to Members
Notice No. 599
12/29/2005
Margin Rate and Tier Changes for Financially Settled NYISO — Peak Electricity Contracts
EFFECTIVE DATE: Friday, December 30, 2005 (close of business)

FUTURES CONTRACTS: NYISO Zone A — Peak (KA), NYISO Zone G — Peak (KG), and NYISO Zone J — Peak (KJ)

CONTRACT MONTHS: All Months

NOTE: The revised tiers and margins are in bold

NYMEX Division Outright (Scan) NYISO-Peak Financially Settled Electricity Futures Contracts Spread Tiers
 
Tiers
New
Old
1
1st Nearby
All Months
2
Greater than 1st Nearby
NA


NYMEX Division Outright (Scan) Margins on NYISO Zone A (KA), NYISO Zone G (KG), NYISO Zone J (KJ)
 
Contract
Clearing Member / Maintenance Margin
Member Customer Initial Margin
Non-Member Customer Initial Margin
 
New
Old
New
Old
New
Old
KA - Tier 1 (1st Nearby)
$4,000
$4,000
$4,400
$4,400
$5,400
$5,400
KA - Tier 2 (Greater than 1st Nearby)
$6,000
$4,000
$6,600
$4,400
$8,100
$5,400
KG - Tier 1 (1st Nearby)
$4,000
$4,000
$4,400
$4,400
$5,400
$5,400
KG - Tier 2 (Greater than 1st Nearby)
$6,000
$4,000
$6,600
$4,400
$8,100
$5,400
KJ - Tier 1 (1st Nearby)
$4,500
$4,500
$4,950
$4,950
$6,075
$6,075
KJ - Tier 2 (Greater than 1st Nearby)
$6,000
$4,500
$6,600
$4,950
$8,100
$6,075

NYMEX Division Intra-Commodity Margins NYISO Zone A (KA), NYISO Zone G (KG), NYISO Zone J (KJ)
 
Tiers
Clearing Member / Maintenance Margin
Member Customer Initial Margin
Non-Member Customer Initial Margin
 
New
Old
New
Old
New
Old
1
$500
$1,000
$550
$1,100
$675
$1,350
2
$1,500
$1,000
$1,650
$1,100
$2,025
$1,350

Current systems calculate the margin requirement for spread positions by first determining the "Scan Risk" and then multiplying the number of spreads by a rate set by the Exchange. Scan Risk is determined by netting the outright margin required for each leg of a spread. Spreading between differently margined contracts results in a higher spread margin than between equally margined contracts. Below is provided an example where the legs of a spread are margined differently.

Scan Risk Example at Clearing Member Rates
A spread consisting of one KJ leg in Tier 1 and another in Tier 2 will have its requirement (at the clearing member rates) calculated at $2,000 starting on Friday, December 30, 2005.

One Long Tier 1 KJ (1 * $4,500) = $4,500
One Short Tier 2 KJ (1 * $ 6,000) = $6,000
Net Scan Risk ($6,000-$4,500) = $1,500
Spread Rate (1* $ 500) = + $500
Total Requirement   = $2,000

Summary  
Clearing Member (Maintenance Margin): $2,000
Member Customer (Initial Margin): $2,200
Non-Member Customer (Initial Margin): $2,700

This notice supersedes all previous notices regarding margin rates and tiers for the Electricity Futures contracts listed above.
Should you have any questions or require any further information, please contact exchangeinfo@nymex.com