Market Overview
Southeast Asia's power generation EPC (Engineering, Procurement, and Construction) sector covers the full lifecycle of building power plants, substations, and transmission networks across thermal, gas, nuclear, hydro, solar, and wind sources. The market encompasses both new construction projects and substantial retrofitting and upgrading work as aging infrastructure is modernized. Regional installed power capacity stood at 4.66 terawatts in 2025, reflecting the scale of ongoing and planned investment in energy infrastructure across ASEAN nations and the broader Asia-Pacific region.
- •Market valued at approximately $224 billion in 2025, with over 7% annual growth expected through 2035
- •Covers new construction, retrofits, upgrades, and transmission/distribution EPC work
- •Regional power capacity reached 4.66 terawatts in 2025
Growth Drivers
Rapid economic growth and urbanization across Southeast Asia are pushing electricity demand higher, requiring significant new generation and transmission capacity. Governments in the region are balancing energy security, affordability, and sustainability goals, leading to diverse fuel mix investments that include both conventional and renewable sources. The renewable energy segment is a particularly strong growth area, with installed renewable capacity expected to expand from 124.61 gigawatts in 2025 toward 178 gigawatts by 2030 as countries pursue decarbonization targets.
- •Urbanization and industrial growth driving sustained electricity demand across ASEAN economies
- •Energy security, affordability, and sustainability policy objectives creating mixed-generation investment pipeline
- •Renewable installed capacity projected to grow from roughly 125 GW in 2025 to over 175 GW by 2030
Segmentation and Regional Analysis
The market is segmented by project type into new construction, retrofits and upgrades, operations and maintenance, and electrical distribution and transmission infrastructure. By energy source, it spans thermal power, gas-based generation, nuclear, and renewables including hydro, solar, and wind. Southeast Asia represents one of the more dynamic sub-regions within the Asia-Pacific, with the ASEAN Power EPC segment expected to register above 6% CAGR, supported by cross-border grid interconnections and national electrification programs across Indonesia, Vietnam, Philippines, Thailand, and Malaysia.
- •Project types split among new build, retrofits, O&M, and electrical infrastructure
- •Energy sources include thermal, gas, nuclear, hydro, solar, and wind generation
- •ASEAN sub-region CAGR expected above 6%, driven by Indonesia, Vietnam, Philippines, Thailand, and Malaysia
Trends and Outlook
What are the recent trends and outlook?
The long-term outlook points to sustained above-average growth as the region invests in both baseload power and intermittent renewable capacity alongside necessary grid modernization and storage integration. Digitalization of power systems, including smart grid deployment and advanced monitoring, is becoming standard in new EPC contracts. The market's trajectory suggests it will remain one of the more attractive global power infrastructure opportunities through 2035, supported by policy commitments, rising demand, and the capital-intensive nature of the transition to diversified energy systems.
- •Smart grid technology and digital monitoring increasingly embedded in EPC project specifications
- •Energy storage and grid integration projects growing alongside renewable generation build-out
- •Market on track to nearly double by 2035, maintaining above-global-average growth rates
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Connect to an analyst →Market size and forecast are Claight Analysis, informed by public research and industry data. Historical years before 2025 and all forecast years are Claight estimates at the stated CAGR. Retrieved 2026.