Saat ini, selain PT BAP, PTBA sebelumnya sudah memiliki dua anak perusahaan, masing-masing PT Batubara Bukit Kendi yang bergerak di bidang usaha penambangan batubara di wilayah Tanjung Enim, Sumatera Selatan, dengan penguasaan saham oleh perseroan sebesar 75 persen.
PT Tambang Batubara Bukit Asam also has two other subsidiaries namely PT Batubara Bukit Kendi which has operated in Tanjung Enim district in South Sumatra and PT Bukit Pembangkit Innovative in Lahat district also in South Sumatra, PTBA controls 75 percent of PT Batubara Bukit Kendi's total shares and 41 percent of PT Bukit Pembangkit Innovative's stakes.