

While systemic change is crucial, everyday actions from individuals also matter. Through community cooperation and shared responsibility, small steps like reducing waste, conserving resources, living mindfully, and advocating for environmental protection can create a ripple effect that strengthens broader climate efforts.
When people work together, these individual contributions build powerful momentum toward a healthier, more sustainable future for all living beings on our planet.

Schools running the Green Soldier system
Kilograms of CO₂e avoided
Students taking part in the program
Tables, benches, and paving blocks made from recycled waste
Green Soldier is a student-founded project in Semarang that turns suitable plastic into school equipment and connects student deposits with school-managed rewards. National Geographic Indonesia documented the pilot at SDN Karangrejo 01. Related Lumiere research examines how schools can share treatment capacity under uncertainty.
Project origins in Semarang
“Christopher started Green Soldier with four school friends after visiting Jatibarang landfill and speaking with Warni about her decades of work as a waste picker. PT Raja Besi provided equipment access and technicians who helped the team develop recycled-plastic paving and school furniture.”
School pilot in Semarang
“At SDN Karangrejo 01 the recycled equipment became part of the garden and learning spaces. Students explored material samples and joined tree planting alongside a digital waste-bank demonstration. The first installation used plastic collected from factory employees. The school program opens a route for students to participate.”
Lumiere research compares 231 capacity configurations across 10,000 weekly scenarios. The leading hybrid combines 20% shared capacity with 25% reserve and a 2.25% simulated failure rate. The dashboard shows the reported results with the calculations below.
Identify a student account through its personal QR code.
Record each material weight with its condition and collection date.
Connect accepted deposits with the student’s points record.
Track reward requests through handover at school.
Give school staff and operators access to the tools they need.
Founder & Project Lead
Co-founder, Head of Business and Logistics
Co-founder, Head of Engineering
Co-founder, Head of Environmental Impact and Sustainability
Head of Public Policy
GREEN SOLDIER
Click on any program to see the deep dive documentation, active locations, SDG contribution cards, and verified field photography.
Recycled school equipment connects with student participation while a developing aquaponic system brings fish and plant cultivation together.
Lumiere research tests 231 school waste-network designs using 10,000 simulated weeks with explicit capacity and reliability constraints.
Students bring suitable materials to school for inspection and weighing before each deposit is recorded.
A student QR identity connects each operator-recorded deposit with points and school-managed rewards.
Material checks separate usable inputs from contamination before processing begins.
Students exchange earned points for rewards that school staff manage and hand over.
How workshop design and repeated production trials turn suitable plastic into paving and school furniture.
Recycled-plastic desks and benches are in use at SDN Karangrejo 01 alongside paving and tree planting.
Students learn through material samples and recycling activities with planting in the school garden.
Workshop support and school participation connect equipment development with implementation.
Contributions take different forms. PT Raja Besi supports production; National Geographic Indonesia covered the project editorially.
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