A recent survey of eight leading listed Thai companies across the energy, power, and aviation sectors shows total planned investments for 2026 approaching THB 500 billion. The bulk is allocated to the energy sector at over THB 327.2 billion, with power and aviation sectors drawing over THB 45 billion and THB 89 billion respectively.
PTT Exploration and Production Public Company Limited (SET: PTTEP) will invest $7.726 billion (approximately THB 253 billion) in 2026, focusing on domestic energy security and international oil and gas expansion. Funds are split between capital expenditure ($5.164 billion) and operating expenditure ($2.562 billion). The main priorities include increasing oil production, advancing key development projects, and expediting exploration to sustain long-term growth.
Gulf Development Public Company Limited (SET: GULF) plans a THB 25–30 billion investment, with about a third dedicated to renewable energy plants and 60% targeted for new S-curve businesses such as data centers, cloud, and AI initiatives. Funding sources include internal cash flow, debentures, and domestic/international loans.
GULF has planned THB 60-70 billion debentures in 2026 to refinance maturing bonds and invest in projects. The company aims for a 15% EBITDA increase, buoyed by new power plants and enhanced revenue from capacity payments.
PTT Public Company Limited (SET: PTT) will invest THB 28.6 billion across its upstream petroleum business, downstream business, new ventures, and fully owned subsidiaries. The group aims for stronger internal capabilities, with a target of generating THB 100 billion in cash flow in 2026.
PTT Oil and Retail Business Public Company Limited (SET: OR) has allocated THB 18.7 billion for 2026, focusing on mobility, lifestyle, global business, and innovation. Over five years, OR’s investments will total nearly THB 58 billion, reflecting its “Empowering All Toward Inclusive Growth” vision.
Electricity Generating Public Company Limited (SET: EGCO) will allocate THB 30 billion in 2026 to expand its natural gas and renewable energy power plant portfolio. Over 80% will target gas power projects, while 20% will go toward renewable energy investments via acquisitions and new project developments in key markets including the U.S., Indonesia, Thailand, Laos, Philippines, South Korea, and Taiwan.
Ratch Group Public Company Limited (SET: RATCH) plans to invest THB 15 billion in greenfield projects and M&A, especially in Australia, Indonesia, and Laos. In Thailand, RATCH is eyeing data centers, advanced manufacturing, and direct power purchase agreements to capitalize on rising ASEAN data center investments.
Airports of Thailand Public Company Limited (SET: AOT) is executing a THB 79 billion expansion plan for 2026. Projects range from Suvarnabhumi eastern terminal improvements to new terminals and capacity expansions in Don Mueang, Phuket, Chiang Mai, and Chiang Rai airports.
Thai Airways International Public Company Limited (SET: THAI) will dedicate THB 10 billion to a new maintenance, repair, and overhaul (MRO) center at U-Tapao Airport, aiming for up to THB 5 billion in annual revenue from the facility. Additional plans include acquiring 15 Airbus A321neo and 10 Boeing 787 to modernize its aging fleet.
