Gunkul Dhumrongpiyawut
Gunkul Engineering
This story is part of Forbes’ coverage of Thailand’s Richest 2026. See the full list here.
Thailand’s bid to become a Southeast Asian data center hub powered by green energy has created a buzz about renewable power producer Gunkul Engineering, which has positioned itself to target the sector. Shares of the SET-listed company surged 160% in the past year, returning chairman Gunkul Dhumrongpiyawut to the list after a three-year hiatus. Run by his daughter Naruechon Dhumrongpiyawut as CEO, the company posted a 24% jump in net profit to 456 million baht ($14 million) on a similar increase in revenue to 2.6 billion baht in the first quarter of 2026.
The company says it is actively bidding for large-scale engineering, procurement and construction contracts for renewable power plants and has an order backlog of over 100 billion baht. It expects annual revenue to hit 10 billion baht this year, up from 8.5 billion baht in 2025 of which more than a fourth was from electricity sales. The founder set up the company in 1982 as a supplier of electrical equipment and turned to renewable energy when he secured a contract from the Electricity Generating Authority of Thailand in 2007 to install a wind turbine. He went on to build solar power plants and wind farms across Thailand, Malaysia, Japan and Vietnam, earning a place among the country’s richest in 2015 for the first time.