Since 1996, Artha Graha Peduli (AGP) has focused on Environmental Conservation as its First Pillar, working within the Tambling Wildlife Nature Conservation (TWNC) to restore damaged ecosystems gradually. The key activities of this program include:
- Reforestation: Planting over 1,000,000 trees, including native Sumatra species such as Waru, Bayur, Nyamplung, and Keruing.
- Forest Protection: Supporting forest patrols in Bukit Barisan Selatan National Park (TNBBS) and educating local villagers on the importance of forest conservation for biodiversity and future oxygen production.
- Community Empowerment: Engaging local villagers in reforestation efforts and combating plastic waste. Alongside AGP's medical team, the program also addresses endemic diseases and actively promotes clean and healthy living. Additionally, AGP enhances education by providing scholarships for students from elementary to university levels.
- Wildlife Conservation: Rehabilitating and preserving endangered species, particularly the Sumatran tiger. In 2007, AGP partnered with Taman Safari Indonesia to establish Indonesia's first Wildlife Rescue Center, which handled the relocation of 5 tigers and 1 crocodile from Aceh, rehabilitating them before releasing them back into their natural habitat. In 2012, AGP collaborated with Panthera to monitor the tiger population across 45,000 hectares.
To date, AGP–TWNC has successfully released 6 tigers into the wild and is currently rehabilitating 7 more at the Wildlife Rescue Center. Remarkably, one of the released tigers returned to the center to give birth to 3 cubs, named Bintang, Topan, and Petir. A population survey in 2012 recorded 6 tigers in a 15,000-hectare area, the highest tiger density in Southeast Asia.