We develop, transport and
deliver clean energy
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Questar’s
Pipeline
System
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2
City
Gate
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3
4
Firm
Sales
GS, FS
Transportation
FT-1, TS
(with firm
demand)
Interruptible
Residential/Commercial
Commercial/Industrial
Minimum Annual Volumes
120,000 DTH (FT-1)
IS
Minimum Annual DTH
7000
Annual Contracts
Market Based
TS
Large
Commercial/Industrial
GS - Daily volumes not to exceed 1,250 DTH in any one day during the winter season.
FS - Daily volumes not to exceed 2,500 DTH in any one day during the winter season.
Qualifications: Annual dth over 2,100 dth, Load Factor 40% or higher
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5
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6

Daily … typically +/- 5%.
- Can be restricted to no over or under deliveries
based on system operating constraints.
- Violations of the daily restrictions are subject to
penalties as provided in the tariff.
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
Monthly… must be within +/- 5%.
- Imbalances may be traded through 15 days
after month end closing.
- Balances not traded within that time are subject
to cash out or gas sale provisions provided
in the tariff.
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
Deliveries to the city gate are the
responsibility of the transportation
customer.
- If gas is not delivered to the city gate, QGC is not
responsible to supply gas to TS customers, even if
customer has firm capacity on QGC.
- Gas delivered to TS customers may be limited to
contracted firm amount or daily nomination,
whichever is less.
- QGC release capacity is recallable.
- Flexed firm capacity is firm, but it is a lower priority.
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
December 5, 2013 Supply Curtailment

Winter 2000-01 three interruptions
- Two Northern
- One Southern

January 1997 for 36 hours
- First partial interruption

December 1990 for 9 days
- First interruption since 1982
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
Winter interruption season:
- November through March


But interruptions can happen any time
during the year
Simultaneous interruption
- Both sales (IS) and transportation (TS)


Geographic interruption possible
Partial interruption possible
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
Customers will be notified by QGC account
management personnel – day or night

Notify QGC if interruption contacts change –
educate all involved in the process

Two-hour maximum allowance to interrupt
gas service
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
Penalty
- Distribution non-gas component: $15/dth
- Supplier non-gas component: $5.71
- Gas-cost component: Highest purchased gas during
period of interruption = $4.75 on Dec. 5, 2013
- Total = $25.46/dth

Meter shut-off may be used to maintain
system integrity
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
Nominations/Scheduling Process
- NAESB Cycles
▪ (North American Energy Standard Board)

Events of December 5th, 2013
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15
Timely Nominations
(Cycle 1)
Sent by 10:30 am
to the TSP by 10:45 am
Scheduled at 3:30 pm
Evening Nominations (Cycle 2)
Sent by 5:00 pm
to the TSP by 5:15 pm
Confirmations by 8:00 pm
Scheduled by 9:00 pm
8:00 am GD2 Gas Flow
8:00 am GD2 Gas Flow
Intraday 1 Nominations
(Cycle 3)
Sent by 9:00 am
to the TSP by 9:15 am
Confirmations by 1:00 pm
Scheduled by 1:00 pm
4:00 pm GD2
Gas Flow
8am
12pm
8pm
Gas Day 1 - December 4,2013
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12am
8am
Intraday 2 Nominations
(Cycle 4)
Sent by 4:00 pm
to the TSP by 4:15 pm
Confirmations by 7:00 pm
Scheduled by 8:00 pm
8:00 pm GD2
Gas Flow
12pm
Gas Day 2
8pm
- December 5, 2013
12am
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