Pooling Gas on SNG with the
DART System
Updated June 22, 2015 for
April 1, 2016 Business
Updated 6/22/2015
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Agenda
• Project Timeline
• Change in the Pool Structure
– Mechanics
– Example
– Segment Scheduling
– Receipt Point Assignments
– Buy/Sell Transactions
• Appendix A – Receipt Points to Pool PINs
Updated 6/22/2015
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Project Timeline
Mar 11, 2015
SNG proposed additional enhancements to its DART
features in response to customer concerns, and agreed to
delay implementation until April 1, 2016 with significant time
to learn DART starting June 2015 forward
Apr 14, 2015
SNG filed its pro forma Tariff revisions with FERC to
implement DART April 1, 2016
June 23, 2015
Open “sandbox” version of DART for customers’ training
using converted data; each month new features will be
available for training (phased functionality over summer/fall)
Sept – Oct 2015
Hands-on training in Houston, Birmingham and Atlanta;
refresher training in 1Q 2016
Mid-March 2016
Open DART for April 1, 2016 business
April 1, 2016
Convert from SoNet Premier to the DART system
Updated 6/22/2015
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Data Set-up in DART
• SNG will transfer certain customer data from Premier to
DART
– Any contracts for FT, FTNN, IT, CSS, ISS and/or PAL with new
contract numbers assigned
– One pool contract will be set up for pooler to execute on-line
– Capacity release transactions in effect on the Go-Live date will
be converted, or SNG will work with the customer to accomplish
• We will not convert receipt point assignments to poolers but work with
each customer to set up
– Contact data on file
– Agency agreements
– Credit data on file
• Customer will need to execute a DART System License
Agreement if they do not use DART today
– Also, appoint a security administrator to set up and administer
security roles for the customer’s employees in DART
Updated 6/22/2015
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Overview of Key Changes
Updated 6/22/2015
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SNG Will Adopt
DART’s Pathed Business Functionality
• Firm transportation contract rights will be pathed
and displayed in DART
– Based on each firm contract package awarded to
Shipper as set forth on its firm contract
• SNG will adopt the NAESB pathed, non-threaded
nomination model utilized by DART
– Geographic locations will be established for storage and
supply pools
• Sufficient information will reside in DART to allow
for pipeline segment scheduling using contract
path priorities and pathed nominations
Updated 6/22/2015
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Overview Comparison of Key
Changes with DART for Suppliers/Poolers
Today, In Premier
Future, in DART
• Nominations can be to/from a pool • There will be multiple pooling locations
contract or storage contract using
on the pipeline, and a location for
counterparty’s contract number.
storage, as receipt or delivery points
• Tier 1 to Tier 2 pool restrictions
• Eliminate Tier 1/Tier 2 pool distinction
• One pooling contract should be
sufficient
• Unlimited buys/sells at pool locations
• Scheduling through a pipeline
constraint uses each shipper’s
rights for a group of points
• Scheduling through a constraint will
use each shipper’s contract path rights
through the pipeline segment
• Confirmations are at the entity and • Confirmation will be at the entity level,
contract level and may be before
unless agreed otherwise, and will
or after pipeline scheduling
always reflect pipeline scheduling
results
Updated 6/22/2015
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Overview Comparison of Key
Changes with DART for Suppliers/Poolers
Today, In Premier
Future, in DART
• Point codes (location proprietary
codes) are 6 digit numeric
• PINs – Point Identification Numbers
will be 6 digit numeric (many will stay
the same)
• Customer number assigned per
entity
• DUNS is supported
• Upstream/downstream names are
not validated
• GID –Global Identification number
assigned per entity
• DUNS is supported
• Upstream/downstream parties must
be set up in DART
• Allocations updated 2 days after
gas flow
• Allocations updated as measurement
is received after gas day ends
• Measurement info is in Premier
• Measurement info is in DART;
screens will be enhanced
• Preliminary cashout is billed with
• Cashout is billed on a one month lag
the production month, then trued up
to allow for trades and reconciliations
for any trades or reconciliations with
with storage
storage
Updated 6/22/2015
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Changes to SNG’s Pool Structure
Updated 6/22/2015
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New Pooling Structure Overview
for April 1, 2016
• Pool PINs* will be established at geographic locations in each
zone for purposes of aggregating gas supply for
sale/purchase, and to support the pathed nomination model
– System-wide pools without a pipeline location will no longer exist
– Tier 1 and Tier 2 pool restrictions will be eliminated
– Supplier needs only 1 pool contract to nominate supply from
receipt points to eligible Pool PIN(s)
• Nominations on a pool contract or transport contract from
receipt points to eligible Pool PINs will not be billed
transportation commodity or fuel (see Appendix A)
– The Shipper will be billed commodity charges from the Pool PIN
to the zone of delivery under its transportation contract
– If a customer wants to nominate from a receipt point to an
ineligible Pool PIN, it can nominate under a transport contract
and pay transportation commodity and fuel to get to a different
Pool PIN
Updated 6/22/2015
*PINS = Point Identification Numbers; aka points or locations
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New Pooling Structure Overview
• Receipt Points that can be nominated to each Pool
PIN without fuel and transport being charged are set
forth on Appendix A using the following guidelines:
– All receipt points can be nominated to the South Louisiana
Zone 0 Pool PIN (enhancement announced 3/11/15)
– Receipt points can be nominated to the Pool PIN that is in
the same zone and on the same system (i.e., north or
south)
– Receipt points on the same system can also be nominated
to Pool PIN(s) in all upstream zones along the same
system (i.e., north or south)
– Receipt points in Zone 1 can be nominated to any Pool PIN
in Zone 1
– The Storage PIN can be nominated to any Zone 0 and
Zone 1 Pool PINs
Updated 6/22/2015
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Pool PINs Proposed for
the DART Conversion
Updated 6/22/2015
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Diagram of DART Pool Nomination
Sabine to South Louisiana Zone 0 Pool Pin
SELL
(Shipper1
200)
Offsystem Supply (400):
Up ID: Party A
Up K or Package: 115419
Sabine
Sabine to Pool PIN
(Pool K) – (1,000)
South
LA
Zone 0
Pool
PIN
SELL
(Shipper2
500)
Offsystem Supply (600):
Up ID: Party B
Up K or Package: 115420
Updated 6/22/2015
SELL
(Shipper3
300)
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Nomination from Sabine to
South Louisiana Zone 0 Pool PIN
Sabine
Upstream:
Transaction
Party/Contract
Offsystem Supply Party A - 115419
Offsystem Supply Party B - 115420
Totals
Pin
Rank
1
1
Nom
400
600
1000
South LA Zn 0 Pool
1
1000
1000
Package ID
Downstream:
Pooling
Totals
Pool Contract
South LA Zone 0 Pool PIN
*
Upstream:
Transaction
Pooling
Totals
Downstream:
Sell
Sell
Sell
Totals
Updated 6/22/2015
Contract
Pool Contract
Shipper1
Shipper2
Shipper3
Pin
Sabine
Rank
1
Nom
1000
1000
1
1
1
200
500
300
1000
Package ID
* Automatically created transactions at Pool PIN based on Sabine nomination
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Scheduling
• Scheduling will be at
– The pipeline segment level for pipeline constraints
– The point level for meter capacity constraints
• Capacity Split screen in DART will show scheduling
priorities for submitted nominations
– Segment and Point level views
• Segment scheduling priorities:
– Firm service
• Primary firm contract routes
• In Path routes (primary within the segment path)
• Out of Path routes (within zone rights but outside primary path
rights)
– Interruptible Service
• IT and AO based on rate
Updated 6/22/2015
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SNG & EEC Lines and Segments
With Pooling Points
DRAFT 6/15/15
Updated 6/22/2015
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Scheduling Gas from
Receipt Point to Pool PIN
• Nominations on a pool contract are scheduled
based on tariff scheduling priorities
− Pool nominations are interruptible
• Pooler can get an out-of-path firm priority if it
nominates at the Pool PIN directly to a shipper
that is
− Nominating under a firm transportation contract, and
− The firm shipper ranks the pooler’s gas to get the priority
− This replicates how poolers get an out-of-path (A-1) priority
in Premier
Updated 6/22/2015
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Scheduling Priorities of a Pool Contract
Supplier Z uses pool contract to
nominate Logansport gas supply
(200 Dth) to sell at North LA Zone 0
Pool to Customer A (100 Dth) and
Customer B (100 Dth) who are
buying gas only from Supplier Z
Customer A – Transport on IT
Customer B – Transport on Master FT
Supplier Z’s pool
contract scheduling
priorities at the
constraint
Out of Path –100
IT - 100
Pipeline Constraint
Pool PINs
Updated 6/22/2015
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Capacity Release of Firm Receipt
Rights to a Supply Pooler
•
Today, a pooler can also acquire firm “A” receipt points
to enhance its priority of service
− In DART, there will be a new process for acquiring receipt side
capacity
• Basic rules
– A firm Shipper can release capacity from its firm receipt point to an
eligible pool location in the same zone provided the Pool Pin is in
the firm Shipper’s Primary Path
– Replacement Shipper will acquire this capacity under a special
purpose master FT contract
• This master FT is then used to nominate only from the acquired receipt
point(s) or from receipt point(s) in the path to the eligible Pool PIN(s)
where sales can occur
• This provides a primary firm priority at the meter stations and an in-path
firm priority along the segment
• No transportation commodity or fuel will be assessed
– Releasing shipper retains out-of-path zone rights and in-path firm
rights from the Pool PIN to firm delivery point
Updated 6/22/2015
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Example: Release of a Primary
Receipt Point to Pool Location in DART
ABC Gas Company releases to Supplier XYZ:
Customer
Supplier XYZ
ABC Gas Co.
Receipt
Delivery
ANR-Shadyside Zn 0 So. Pool
Zn 0 So. Pool Aiken
QTY
1,000
1,000
Contract
Special FT
Master FT
ABC Gas – Master FT
ABC Gas retains
secondary firm rights in
Zone 0
Supplier XYZ – Special FT
Supplier XYZ – Special FT
Updated 6/22/2015
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Scheduling Priorities After Release of
Firm Receipt Point to Pool PIN
Supplier XYZ has firm (“in
path” rights) through
White Castle constraint
ABC Gas has firm (“in path”
rights) through Enterprise
constraint
Pipeline Constraint
Pool PINs
Updated 6/22/2015
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Other Ways to Buy and Sell
Aggregated Gas Supplies
• Multiple title transfers will be allowed at each
Pool PIN
– Purchase will be a ‘buy’ transaction type
– Sale will be a ‘sell’ transaction type
– No contract with SNG is required for these
nominations since no transportation is taking
place and there are no imbalances
• These buy or sell transactions can occur at
– Any Pool PIN, any Receipt Point, or at the
Storage PIN
Updated 6/22/2015
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Diagram of DART Buy/Sell Nomination
at South Louisiana Zone 0 Pool Pin
SELL
(Shipper3 - 200)
BUY
(Shipper1 - 200)
South LA
Zone 0
Pool PIN
SELL
(Shipper4 - 200)
BUY
(Shipper2 - 400)
SELL
(Shipper5 - 200)
Updated 6/22/2015
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South LA Zone 0 Pool Nomination
South LA Zone 0 Pool Pin
Upstream:
Transaction
Buy
Buy
Party/Contract
Shipper1
Shipper2
Totals
Counter Party
Nom
Rank Nom Qty Package ID
500
200
500
400
600
Downstream:
Sell
Shipper3
500
200
Sell
Shipper4
500
200
Sell
Shipper5
500
200
600
Totals
Updated 6/22/2015
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For Questions and Follow-up
• Contact your Account Manager
– Walter Coe, [email protected]
– Lisa Guthrie, [email protected]
– Jerry Nelson, [email protected]
• Or contact Gina Mabry, Scheduling Manager,
[email protected]
• Or submit questions to
#[email protected]
Updated 6/22/2015
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Appendix A
Receipt Points Mapped to
Eligible Pool PIN(s)
Updated 6/22/2015
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