Thailand Power Development Plan 2015-2036
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6.3.3 Transmission System Expansion and Renovation Project, Phase 2<br />
The Transmission System Expansion and Renovation Project, Phase 2, a<br />
successive scheme of Phase 1 involves the renovation and expansion of the existing 19<br />
substations and 11 transmission lines and miscellaneous improvement related to the<br />
transmission system. It was approved by the cabinet on January 15, 2013 and planned to<br />
be completed in 2020.<br />
6.3.4 Transmission System Expansion and Renovation Project (Future<br />
Phases)<br />
The successive phases of Transmission System Expansion and<br />
Renovation Projects involve the renovation and expansion of the existing substations and<br />
transmission lines as well as miscellaneous works related to the transmission system in<br />
the future to prevent the power outage and improve the reliability of the transmission<br />
system. The other phases of Transmission System Expansion and Renovation Projects are<br />
as follows:<br />
6-5<br />
Period<br />
Transmission System Expansion and Renovation Project, Phase 3 2017 - 2021<br />
Transmission System Expansion and Renovation Project, Phase 4 2022 - 2026<br />
6.4 Transmission System <strong>Development</strong> for <strong>Power</strong> Purchase<br />
6.4.1 Transmission System <strong>Development</strong> for <strong>Power</strong> Purchase from<br />
Hongsa Lignite-Fired Thermal <strong>Power</strong> <strong>Plan</strong>t Project<br />
The transmission system project aims to accommodate the power<br />
purchase from Hongsa Lignite - Fired Thermal <strong>Power</strong> <strong>Plan</strong>t Project in Lao PDR which is the<br />
first lignite-fired power plant of the capacity of 3x626 MW for supplying 1,473 MW of<br />
power to <strong>Thailand</strong>. The transmission system project consists of the construction of new<br />
500 kV transmission lines from Thai/Lao border (Nan Province) to 500/230/115 kV Nan<br />
Substation to be connected with 500 kV transmission line to the main system at Mae Moh<br />
3 Substation. It was approved by the cabinet on July 13, 2010 and planned to be<br />
completed in year <strong>2015</strong>.<br />
6.4.2 Transmission System <strong>Development</strong> Project for <strong>Power</strong> Purchase from<br />
IPPs (IPP 2007)<br />
The transmission system project aims to accommodate power purchase<br />
from four IPPs according to the <strong>Power</strong> <strong>Development</strong> <strong>Plan</strong> 2007 – 2021 (PDP 2007), which<br />
was approved by the National Energy Policy Council (NEPC) and the cabinet in June 2007.<br />
The project was approved by the cabinet on June 9, 2009 and it comprises four<br />
transmission system sub-projects as follows:
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