Dewi Kam's billionaire wealth is concentrated in coal and power assets, including a large indirect stake in Bayan Resources and controlling interests in companies tied to Indonesian power projects. [1][2][3]
Bayan Resources became the largest visible component of her fortune
Forbes says Kam gets the bulk of her wealth from a minority stake in Indonesian coal producer Bayan Resources and also has interests in power-plant construction and operations. [1]
An Indonesian coal-industry association report citing government mining data says Kam owns 99.56% of PT Sumber Suryadaya Prima, which in turn held 10% of Bayan Resources as of September 2025. [2]
That structure gives her a substantial indirect economic interest in Bayan without making her the controlling shareholder of the listed miner, whose founder Low Tuck Kwong remains the largest direct owner. [2]
Her operating record extends beyond passive coal ownership
Indonesia Corruption Watch's review of power-project ownership records says companies ultimately controlled by Kam and Richard Jasin owned the majority of PT Sumber Energi Sakti Prima, a developer tied to Indonesian power projects. [3]
The reviewed record establishes significant energy-company ownership and project involvement, but it does not establish the origin of Kam's starting capital or whether a material family fortune funded those holdings. That missing starting-point evidence prevents a confident self-made anchor despite the scale of the assets she now controls. [1][3]
Sources for background
Sources reviewed Oct 3, 2026.
- Dewi Kam · Forbes · Mar 10, 2026
- Raja Batu Bara Panen Dividen Bayan Resources (BYAN) · APBI-ICMA · Aug 3, 2026
- Siapa di Balik Pembangkit Listrik? · Indonesia Corruption Watch · Jun 1, 2020
Comparable Energy billionaires
Similar Energy billionaires by estimated net worth.