Thailand Power Development Plan 2015-2036
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1) The transmission system for the Gheco-One <strong>Power</strong> <strong>Plan</strong>t Project was<br />
completed and connected to the grid system since February 11, 2013.<br />
2) The transmission system for the Gulf JP UT Co., Ltd. was completed<br />
and connected to the grid system since August 28, 2014.<br />
3) The transmission system for the Gulf JP NS Co., Ltd. will be<br />
completed in June <strong>2015</strong>.<br />
4) The transmission system for the National <strong>Power</strong> Supply Co., Ltd. is<br />
currently not commenced.<br />
6.4.3 Main Transmission System Expansion Project for <strong>Power</strong><br />
Purchase from SPP Cogeneration <strong>Power</strong> <strong>Plan</strong>t, based on Request<br />
for Proposal 2010<br />
The transmission system project aims to accommodate the increasing<br />
power purchase of 3,500 MW from SPP’s cogeneration power plants with the resolution<br />
of the National Energy Policy Council (NEPC) on November 25, 2010 to strengthen the<br />
stability of the power system and reduce the system losses of both transmission and<br />
distribution network. The project involves the construction of new 230 kV transmission<br />
lines between Ayutthaya 4 and Si Khiu 2 Substations, the renovation of related<br />
transmission lines with the distance of 507.85 circuit-kilometers, a new substation, the<br />
installation of 2,900 MVA transformers, and the improvement of relevant transmission<br />
systems. It was approved by the cabinet on October 18, 2011 and planned to be<br />
completed in December 2017.<br />
6.4.4 Transmission System <strong>Development</strong> for <strong>Power</strong> Purchase from<br />
Nam Ngum 3 and Nam Theun 1 Hydropower <strong>Plan</strong>t Project<br />
The transmission system project aims to accommodate the power<br />
purchase from Nam Ngum 3 and Nam Theun 1 Hydropower <strong>Plan</strong>t Projects and/or other<br />
potential projects in Lao PDR such as Nam Ngiep 1 Hydropower Project and Xayaburi<br />
Hydropower Project. The project comprises: 1) The construction of new 500 kV<br />
transmission lines Nam Phong 2 – Chaiyaphum 2 - Tha Tako connected with the existing<br />
Ban Na Bong (Lao PDR) – Udon Thani 3 – Nam Phong 2 lines (currently operating at 230<br />
kV) to become the 500 kV Ban Na Bong – Udon Thani 3 – Chaiyaphum 2 – Tha Tako line,<br />
2) The construction of the 230 kV Chaiyaphum 2 – Chaiyaphum line with a total length of<br />
approximately 1,492 circuit-kilometers, a new substation and the installation of<br />
transformers of 4,000 MVA. It was approved by the cabinet on December 18, 2007 and<br />
planned to be completed in June 2017.<br />
6-6
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