WHA Utilities and Power (WHAUP), a subsidiary of WHA Corp, Thailand’s largest industrial land developer, is investing 29 billion baht in renewable energy projects from 2025 to 2029. The company aims to secure long-term revenue by supplying clean electricity to businesses in the digital technology sector.
Nearly 75% of the allocated budget will fund the expansion of WHAUP’s solar power business, covering both ground-mounted and rooftop solar panels. The remaining portion will be used for water supply and wastewater treatment services within industrial estates, according to Somkiat Masunthasuwun, chief executive of WHAUP.
The company plans to increase its power generation capacity by 220 megawatts this year, raising total capacity from 965MW in 2024 to 1,185MW. Renewable energy currently accounts for 45% of WHAUP’s total power supply, with fossil fuels making up the rest. As global businesses push for carbon reduction, WHAUP is positioning itself to meet the demand for clean energy, particularly from foreign firms operating data centers in WHA industrial estates. These facilities are expected to be operational by the end of 2025.
WHAUP anticipates returns from its renewable energy investments starting in 2026 when it begins supplying electricity to these businesses. Additionally, in the second quarter of this year, the company will pilot a peer-to-peer energy trading project among factories in WHA industrial estates in Rayong and Chon Buri. The project, operating under the Energy Regulatory Commission’s (ERC) sandbox initiative, will facilitate the trade of 4MW of electricity among 49 companies and seven prosumers. The ERC sandbox, introduced in 2019, tests microgrid systems and the concept of prosumers—factories that both generate and consume power.
In its water business, WHAUP projects that water supply and treated wastewater services for clients in Thailand and Vietnam will reach 173 million cubic meters in 2025, marking a 4% increase from the previous year.
