Water Catchment and Spring Revitalization
Water is a vital resource for both geothermal power generation and the local communities that rely on it. With Star Energy Geothermal’s facilities located in the lush, high-rainfall mountainous regions of West Java, the company views the preservation of surrounding watersheds as a core environmental responsibility.
Our Zero-Discharge Philosophy
Before looking outward at the forest, we look inward at our operations. Geothermal energy generation utilizes a highly efficient closed-loop system. The steam extracted from the earth to power our turbines is condensed back into water and 100% re-injected deep into the geothermal reservoir.
This strict “zero-discharge” principle ensures that our industrial power generation does not deplete the surface-level groundwater, rivers, and springs that local communities and wildlife rely upon.
Action on the Ground: Our Regional Initiatives
Beyond operational efficiency, we actively intervene to restore and protect natural water catchments across our three main assets:
1. Wayang Windu: Bringing Springs Back to Life
Operating in a region susceptible to water stress, we launched an in-situ restoration program under our Citra Bakti Lestari initiative to rescue drying springs in the Leuweung Citere and Citiis forest areas.
The Action: In partnership with local youth and community groups, we have planted thousands of hardwood trees to stabilize the sub-watershed and improve groundwater absorption.
The Impact: This targeted reforestation successfully restored the ecological function of the catchment, bringing four previously dry springs back to life to serve the local ecosystem and neighboring villages.
Impact
as of December 2025
2. Salak: Protecting the National Park Watershed
Our Salak operations are situated within the highly sensitive Mount Halimun Salak National Park (TNGHS). To maximize our conservation efforts, our operational footprint is strictly limited to just 2.36% of our designated working area.
The Action: We work hand-in-hand with local communities to restore degraded lands within the park, specifically targeting the Cisarua River water catchment and the upstream Cikaluwung Watershed.
The Impact: These continuous reforestation and land-rehabilitation efforts have stabilized the soil, prevented landslides, and demonstrably increased river water discharge rates.
3. Darajat: Empowering Forest Guardians
True conservation requires community ownership. At our Darajat facility in Garut, we take a collaborative, community-first approach to spring protection.
The Action: We operate under a formal cooperation agreement with Perhutani (the state forestry company) and the local Forest Village Community Institution (LMDH).
The Impact: By economically empowering local villagers to act as the daily guardians of the forest, we ensure the sustainable utilization and long-term protection of vital water springs in the Bayongbong district.