RT Eyes Tunnel Repair Boom and Geothermal Ventures as Project Pipeline Grows

Mr. Chawalit Tanomtin, Chief Executive Officer of Right Tunnelling Public Company Limited (SET: RT), stated that the company continues to focus on its core business in tunneling, alongside dam construction, power plant projects, and specialized infrastructure works.

In the current year, RT will focus on design, maintenance, and repair of tunnels, particularly utility tunnel systems in Bangkok. When such tunnels reach their typical service life of 10–15 years, repair and planned maintenance become necessary. The company is already preparing for these business opportunities.

In the long term, the company is studying the feasibility of utilizing geothermal energy as part of its business plan, viewing it as a promising alternative energy source. RT has started collaborating with partners in Japan to further develop knowledge and explore business opportunities in this area.

In 2025, the company has secured several new projects worth approximately THB 3.6 billion. For 2026, RT targets to participate in new bids with a total value of about THB 20 billion—comprising railway and rail system tunnel works worth about THB 6.5 billion, drainage tunnel projects around THB 7.5 billion, road tunnels valued at about THB 6 billion, as well as utility tunnel projects, with only a limited number of qualified contractors able to undertake such projects.

In addition, the company expects annual revenue of approximately THB 500 million from projects converting overhead cables to underground lines, pipe jacking, and HDD (Horizontal Directional Drilling) works. Power plant and dam projects are anticipated to generate around THB 200 million, dam maintenance services about THB 100 million, and other infrastructure repair works about THB 200 million per year.

As for performance, the company estimates its 2026 revenue to grow by approximately 10% from the previous year, reaching about THB 3.9 billion, with most earnings from existing backlog works. The company has also revised its strategy to increase the share of main contracting roles from around 16% historically to 35% in 2025, and expects this proportion to continue rising in 2026, aiming to strengthen business stability and reduce financial risks.

For current main contractor projects, the new backlog includes: the Mae Taeng–Mae Ngat Tunnel Project (Contract 2) valued at THB 2.8 billion; the Khlong Suan Oi Drainage Tunnel Project valued at approximately THB 900 million; and a project to convert overhead cables to underground lines with Metropolitan Electricity Authority valued at THB 550 million. The company’s joint venture projects total about THB 800 million.

RT also announced progress in joining the “Jump+” program by the Stock Exchange of Thailand (SET), which runs for about three years and aims to enhance business strategies, reduces greenhouse gas emissions, and improves corporate governance. Under its three-year plan, the company will prioritize net profit over merely growing its backlog, targeting at least THB 200 million in net profit over the period.