# Thammasak Sethaudom

> Thammasak Sethaudom is a Series B investor at Siam Cement Group (Bangkok) backing Energy. See 1 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Siam Cement Group](https://shizune.co/investors/profile/siam-cement-group)
- Location: Bangkok, Thailand
- Total investments: 1
- Last investment: Aug 2023
- Lead investor: 0%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/thammasak-setha-udom-03124927/

Thammasak Sethaudom is a Series B investor at Siam Cement Group in Bangkok focused on Energy. Thammasak Sethaudom

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Rondo Energy | Rondo Energy delivers zero-carbon industrial heat. Rondo Heat Battery powers industrial processes with renewable electricity, cutting energy costs and eliminating emissions. | $60M | Series B | Aug 16, 2023 |  |

1 of 1 investments shown.

## Co-investors
- [Aramco Ventures](https://shizune.co/investors/profile/aramco-ventures) — VC Fund, 1 deal together
- [Breakthrough Energy Ventures](https://shizune.co/investors/profile/breakthrough-energy-ventures) — VC Fund, 1 deal together
- [Energy Impact Partners](https://shizune.co/investors/profile/energy-impact-partners) — VC Fund, 1 deal together
- [Microsoft Climate Innovation Fund](https://shizune.co/investors/profile/microsoft-climate-innovation-fund) — VC Fund, 1 deal together
- [Rio Tinto](https://shizune.co/investors/profile/rio-tinto) — VC Fund, 1 deal together
- [SABIC](https://shizune.co/investors/profile/sabic) — VC Fund, 1 deal together

## About Siam Cement Group

VC Fund · Bangkok, Thailand

SCG, a business conglomerate in the ASEAN region, has committed itself to conducting business in line with good corporate governance and sustainable development principles throughout 100 years. The Group's longstanding tradition of learning, adjustment and development in all areas has enabled SCG to survive the wave of crises and challengesand earn widespread recognition as a role model for other businesses, both locally and internationally.SCG was established in 1913 following a royal decree of His Majesty King Rama VI to produce cement, the main building material for infrastructure projects that greatly contributed to the progress of the country during that period. Since its founding, SCG has grown continually and diversified into three core businesses, namely SCG Cement-Building Materials, SCG Packaging and SCG Chemicals.

2 contacts available at Siam Cement Group.

| Name | Title | Profile |
| --- | --- | --- |
| chaloem khompitoon | Founder | https://shizune.co/investors/profile/vajiravudh |
| Thammasak Sethaudom | Director | https://shizune.co/investors/profile/thammasak-sethaudom |

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## FAQ

### What does Thammasak Sethaudom invest in?

Thammasak Sethaudom invests primarily in Energy startups, most often at Series B stage. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### When did Thammasak Sethaudom last invest?

The most recent investment recorded for Thammasak Sethaudom closed in Aug 2023. Shizune tracks 1 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.

### Is Shizune's investor data accurate?

Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Aug 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.

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