Biochar
High-quality biochar for soil improvement, agricultural productivity, and long-term carbon storage.
Learn MoreReal Solutions.
Lasting Impact.
We turn organic waste into high-quality biochar and carbon removal solutions that restore soil, support communities, and build a circular future.
Circular
By Design
Renewable
At Heart
Measurable
Impact
Together
For Change
About Project Otter
Project Otter is PT GSI's circular biomass platform that converts organic waste into high-quality biochar and carbon removal solutions for a more sustainable and regenerative future.
1+
Projects in
Progress
40+
Locations Across
Indonesia
6,000+
Tonnes/Year
Future Capacity
10+
Years Project
Design Life
What We Offer
Solutions that create value for the planet, your business, and communities.
Carbon Credits
High-integrity carbon removal credits from biochar. Measurable. Verifiable. Lasting impact.
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CSR Programs
Meaningful CSR programs that create real impact for the environment and communities.
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Biomass Partnership
Collaborate with us to unlock the value of your biomass waste through long-term and transparent partnerships.
Learn MoreWho We Work With
Corporates & Enterprises
Plantations & Agriculture
Carbon & Offset Partners — Organizations seeking carbon-removal or offset solutions.
Governments & Institutions
Communities & NGOs
Project Otter Portfolio
One Validation Hub.
Multiple Commercial Clusters.
Project Otter uses West Java as the validation hub to establish a repeatable operating model before deploying the platform across multiple biomass feedstocks and commercial sites.
6
Clusters
3
Ready to Deploy in 2027
567 TPM
Standard Commercial Module
Aligned Incentives
Capital Protection
Shared Success
West Java
Feedstock & Validation Hub
01
Validate Feedstock
Test multiple biomass types & quality.
02
Prove Operations
Validate performance under real conditions.
03
Optimize Model
Establish operating parameters & learning.
04
Create Blueprint
Develop replication blueprint for clusters.
Scenario 1 — Validate Then Scale
Pilot 150 TPM
US$176,177
Upscale to 567 TPM
US$1,657,500
Total Investment (USD)
US$1,833,677
≈ 567 t/month at full commercial scale.
Commercial Cluster Potential
567 TPM represents the standardized commercial module — feedstock availability provides potential for further replication and expansion.
01
West Java
Wood Cluster
Current Feedstock
From 1 factory can supply ~20 TPD
3 factories = ~60 TPD total
Potential Feedstock
~140–160 TPD
(~4,200–4,800 TPM)
from ~7–8 factories
Project Module
567 TPMPotential Modules
7–8 Potential modules
Investment Per Module
US$1,833,677
US$176,177 + US$1,657,500
02
Central Java
Wood Cluster
Current Feedstock
~60–65 TPD
(~1,500 TPM)
Factory running at ~45% capacity
Potential Feedstock
~4,000–5,000 TPM
At full capacity
Project Module
567 TPMPotential Modules
7–9 Potential modules
Investment Per Module
US$1,733,204
03
South Sumatra
EFB & OPT
Current Feedstock
~60 TPD EFB
(~1,800 TPM)
Potential Feedstock
~1,800+ TPM
Project Module
567 TPMPotential Modules
3 Potential modules
Investment Per Module
US$1,705,471
04
Central Java
Rice Cluster
Current Feedstock
~10 TPD
(~300 TPM)
Potential Feedstock
Below 567 TPM~300 TPM
Project Module
567 TPMPotential Modules
—
Investment Per Module
TBD
Additional feedstock required to reach module scale.
05
Coffee Cluster
Coffee Husk
Current Feedstock
Subject to feasibility and pilot deployment.
Potential Feedstock
TBD
Project Module
567 TPMPotential Modules
—
Investment Per Module
US$1,833,677
US$176,177 + US$1,657,500
Subject to feasibility.
Investment estimates for clusters other than West Java are indicative and subject to change based on final feasibility studies, site assessment, technology selection, timing, IDR to USD exchange rate, equipment pricing, engineering scope, logistics, permits, and other project-specific factors. Assuming 30 operating days per month.
1
Validate at Hub
Prove feedstock, technology and operations at West Java.
2
Standardize the Model
Develop a replicable operating model and performance blueprint.
3
Deploy Across Clusters
Replicate the model across diverse feedstocks and strategic locations.
4
Scale the Platform
Create high-quality biochar and carbon removal at scale.
Driving Impact at Every Step
Collect
We source organic biomass waste responsibly.
Convert
Advanced pyrolysis technology transforms waste into biochar.
Apply
Biochar improves soil health and supports restoration.
Remove
Carbon is locked in for the long term, creating real impact.
Let's Build a Regenerative Future
Partner with us to create
impact.
Whether you're looking for biochar, carbon credits, CSR collaboration, or biomass partnerships — we're here to build solutions that matter.
Partner With Us