Updated on December 15, 2023


Created on September 15, 2020


Upcoming Update

The (B)pack is a portable biogas storage system that connects to biogas cookstoves.

Developed By
  1. (B)energy
Tested By
  • TUV SUD Management Service GmbH
Content Partners


Product Description

The (B)pack by (B)energy is a portable energy storage system designed to store biogas when connected to a biogas digester. The storage pack’s modular design operates through pressure equalization between the backpack and any biogas digester. The backpack straps allow transport of the (B)pack to facilitate the sale of biogas. When used for cooking the (B)pack is connected to a biogas stove and the gas is pushed out by placing a weight on the bag.


Target SDGs

SDG 7: Affordable and Clean Energy

Market Suggested Retail Price


Target Users (Target Impact Group)


Distributors / Implementing Organizations

This product is distributed by (B)energy

Competitive Landscape

Direct competitors include Flexigester V10, Flexi Biogas BG5, and Sistema Biobolsa BB4.

Manufacturing/Building Method

The Biogas Backpack is manufactured on a per demand basis at their facility in Ethiopia.

Intellectural Property Type


User Provision Model

Users can obtain the product/service directly from (B)energy, through their website, email, or phone inquiry.  

Distributions to Date Status

While the exact number is unknown, (B)packs have been deployed in Benin, Ethiopia, Rwanda, Malawi, India, and Kenya for schools, neighborhood businesses, and refugee sites.

Output energy product


Average daily biogas production (m3/day)

1 m3/day (maximum storage)

Description of waste source(s)

Animal manure or food waste

Waste input requirements (kg per hour or day)

2406.53 kg/day (maximum output)

Description of other input requirements

External pressure resistance of 30 daN and internal pressure resistance of 0.5 bar

Other input requirements (amount per hour)

Made for 2-4 hours of cooking, limited permeability of 0.0029% methane/hour

System dimensions (m)

1.6 x 2.0 m

Design Specifications

The Biogas Backpack has a width of 1.6 m and a length of 2.0 m. The product weighs 3.5 kg and has a capacity of 1 m3, and  is equipped with a ball valve and 2 backpack straps. The biogas backpack can be filled with gas produced by separate methane tanks, where animal droppings or food waste are added. Once the tank produces enough methane gas, the gas can be piped out via metal pipes or other tubing and transferred into the balloon-like Biogas Backpack, which can be carried on your back like a backpack.

Product Schematics

Technical Support

Provided by the manufacturer.

Replacement Components

There are no replaceable components.


10 years

Manufacturer Specified Performance Parameters

Designer specified performance targets for the Biogas Backpack include: wearable, portable, and low-cost. This storage system was designed to have a limited permeability of 0.07% methane/day.

Vetted Performance Status

TÜV safety tests were performed on the (B)pack.


Potential hazards related to the operation of this product include transporting flammable gases. Stored outside, protected from UV and Sharp objects

Complementary Technical Systems

A reliable biogas source is required to use this product. Complementary (B)energy biogas products include the (B)plant for biogas production, and a (B)flame for a complementary cookstove.

Academic Research and References

Compliance with regulations

The (B)pack is TÜV tested, thus certified to be safe for the storage and transport of biogas.

Evaluation methods

The manufacturer cites TUV testing as evaluation criteria

Other Information

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