Presentacin de PowerPoint

1
ENAGAS TIGF Agreement Larrau Interconnection,
November 2007

• Commercialized capacity from France to Spain once
  Falces-Irurzun pipeline is in operation 87 GWh/d
• Minimum guaranteed pressures at Larrau dependant
  on transit flow to Spain
• before Navarra compressor station is in
  operation.
• once Navarra compressor station is in operation.
  Mont and Navarra compressor station operation
  optimization (LACAL pipeline).

2
Minimum guaranteed pressures at Larrau dependant
on transit flow to Spain 1) Before Navarra CS is
in operation

• Calling Q the transit flow from France to Spain,
• Minimum guaranteed pressure P at Larrau dependant
  on Q will be
• if Q ? 77 GWh/d ?
• pressure P according to current Operation
  Manual and/or in case of operational difficulty,
  specific agreement between the TSOs, without
  affecting the approved nominations.
• if Q ?(77 81,5 GWh/d ?
• pressure P 61 0,172(Q-77) bar(a)
• if Q ? (81,5 87 GWh/d ?
• in WINTER pressure P 61 0,172(81,5-77)0,05
  (Q-81,5) bar(a)
• in SUMMER pressure P 61 0,172(81,5-77-
  0,141(Q-81,5) bar(a)

3
Minimum guaranteed pressures at Larrau dependant
on transit flow to Spain 1) Before Navarra CS
is in operation (cont.)
4
Minimum guaranteed pressures at Larrau dependant
on transit flow to Spain 2) Once Navarra CS is
in operation
Throughout 2008, ENAGAS and TIGF will define the
relation pressure/flow at Larrau that optimizes
Mont and Navarra compressor stations joint
operation in order to operate the LACAL pipeline
in the most efficient way for both compressor
stations.