Billionaire Profile
Sarath Ratanavadi
Global Rank
#170

Image: MGR Online VDO | CC BY 3.0 | via Wikimedia Commons

Sarath Ratanavadi

CEO, Energy
THAILAND
Real-Time Net Worth
$16.435B
Estimated based on Energy stock value as of March 6, 2026
+5.01% (24h)
Age
60
Source
Energy
Industry
Finance & Investments
Citizenship
THAILAND

Biography

Sarath Ratanavadi is a prominent Thai businessman, engineer, and philanthropist. Born on July 12, 1965, he is the founder and CEO of Gulf Development, a major conglomerate with interests in energy, telecommunications, and digital infrastructure. His career began in Thailand's energy sector, leading to the establishment of Gulf Energy Development in 2007. Ratanavadi's strategic vision has led to the company's expansion, including investments in renewable energy and cryptocurrency. With a net worth of $12.9 billion as of May 2025, he is recognized as one of Thailand's wealthiest individuals.

Fact Checked
Verified by Editorial Team
Live Data
Updated 3/6/2026

Wealth Over Time

In-Depth Profile

Early Life and Education

Sarath Ratanavadi was born in Bangkok, Thailand on July 12, 1965. He comes from a military background; his father was a General in the Royal Thai Armed Forces. Ratanavadi attended Vajiravudh College and later earned a bachelor's degree in civil engineering from Chulalongkorn University. He furthered his education by obtaining a Master of Science in Engineering Management from the University of Southern California (USC).

Rise to Success

Ratanavadi's career began in 1994 when he founded Gulf Electric Company Limited, marking his entry into Thailand's power sector. Over the years, he expanded his business by establishing several power companies, which were later consolidated into Gulf Energy Development in 2007. In 2017, Gulf Energy Development went public, raising significant capital, and becoming one of Thailand's largest IPOs in a decade. Ratanavadi has successfully diversified Gulf Energy's portfolio to include renewable energy and cryptocurrency ventures.

Key Business Strategies

Ratanavadi's success is attributed to his ability to identify macroeconomic shifts and adapt his business strategies accordingly. He focused on building long-term value through infrastructure, sustainability, and digital transformation. Strategic moves, such as acquiring stakes in InTouch Holdings and Advanced Info Service (AIS), aligned Gulf's energy dominance with digital connectivity. Gulf's joint venture with Binance for a crypto exchange and partnerships with Google Cloud for AI-powered facilities demonstrate his forward-thinking approach.

Philanthropy

Sarath Ratanavadi is involved in education-focused philanthropy. He chairs the NIST International School Foundation in Bangkok, contributing to high-quality education and environmental sustainability. He also supports youth empowerment through grants and scholarships. In 2015, he donated $3 million to the USC golf program.

Career Milestones

1994

Founded Gulf Electric Company Limited

Established his first venture in Thailand's power sector.

2007

Founded Gulf Energy Development

Consolidated power companies under a holding company.

2017

Gulf Energy Development IPO

Took Gulf Energy Development public, raising significant capital.

2021

Acquired stakes in InTouch Holdings and AIS

Expanded into telecommunications and digital infrastructure.

2025

Merged Gulf Energy Development with Intouch Holdings

Formed Gulf Development.

Philanthropy & Social Impact

Education

NIST International School Foundation

$XB

Chairs the foundation, supporting education and international curricula.

Controversies & Challenges

2015

USC Donation and Admissions

Donated $3 million to USC, and his son was admitted, which led to an investigation into donor influence.