Household biodigester
The core system at the household.
In progress · Sirajganj + Bogra
Project Green Flame
Livestock waste becomes cooking fuel.
Current progress · June 2026
About 300 installations reported
By June 2026, Phase I had contracted 400 household systems. Current function and household use are being followed up separately.
Sirajganj
200
planned systems
Bogra
200
planned systems
Household loop
Waste to fuel. Nutrients back to the farm
A household biodigester links cooking energy with the farm around it.
- Organic input
- Livestock and household organic material.
- Biodigester
- A sealed system produces biogas.
- Cooking energy
- Biogas feeds the household stove.
- Farm nutrients
- Digestate can return to agricultural use.
Phase I
Systems and services in Phase I
Installation and commissioning
Set up and checked for use.
After-sales service
A repair path when systems need attention.
Digestate use
A route for nutrients back to the farm.
Field view
A household system in daily life
What matters now
Check whether the systems stay in use
Working systems
Track gas reliability over time.
Regular use
Track continued household use.
Reachable repair
Faults can be repaired locally.
Useful digestate
Digestate returns to productive use.
Next
Now the gas has to keep flowing
Check gas reliability, continued household use, local repairs and productive use of digestate before planning the next phase.
Evidence notes
Phase I: signed City Bank Project Green Flame agreement and Annexure 1, October 2025. It establishes 400 household systems, with 200 planned in Sirajganj and 200 in Bogra.
June 2026: the latest supplied project update reports approximately 300 installations. Field follow-up is tracking current function and household use.
Biogas: household energy and bio-fertiliser context draws on IDCOL's biogas programme and Cultivera's biogas analysis.