Scene setting

ASEAN electricity demand grew by approximately 50% between 2013 and 2023 and is projected to rise by up to 41% by 2030. While the IEA's Announced Pledges Scenario (APS) targets 100,000 km of transmission line expansion for Southeast Asia between 2021 and 2030, the combined plans of Indonesia, Viet Nam, Thailand, and the Philippines total 45,078 km, covering only about 45% of that target. The document argues that grid planning must shift from merely meeting peak demand to managing the intermittency of wind and solar power, which saw cost reductions of 55% and 85% respectively in the decade to 2020.

• Electricity demand in ASEAN increased by approximately 50% from 817 TWh in 2013 to 1,277 TWh in 2023, with further growth of up to 41% expected by 2030.
• The cost of wind and solar power decreased by 55% and 85% respectively during the decade leading up to 2020, while battery costs also fell by 85% in the same period, necessitating a shift in grid planning to manage supply variability and intermittency.
• The combined transmission line expansion plans for Indonesia (20,798 km), Viet Nam (12,300 km), Thailand (6,677 km), and the Philippines (3,935 km) total 45,078 km by 2030, which represents only about 45% of the IEA's Announced Pledges Scenario (APS) target of 100,000 km for Southeast Asia between 2021 and 2030.
• The IEA estimates that Southeast Asia needs to add 1.7 million km of transmission and distribution grids between 2021 and 2030, with transmission lines making up approximately 6% and distribution lines 94% of that total.

APA

Ember (2025). Scene setting. https://ember-energy.org/chapter/scene-setting/

Chicago

Ember. Scene setting. 2025. https://ember-energy.org/chapter/scene-setting/.

Wikipedia

{{cite report |author=Ember |title=Scene setting |date=15 May 2025 |url=https://ember-energy.org/chapter/scene-setting/ |access-date=17 August 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{ember2025scene, author = {{Ember}}, title = {{Scene setting}}, institution = {Ember}, year = {2025}, month = may, url = {https://ember-energy.org/chapter/scene-setting/}, urldate = {2026-08-17}, note = {Indexed by Climate Insights Directory} }