The GesiShamba is a modular fixed dome biogas system developed to use recycled waste from rural farms and households.
The GesiShamba is a modular fixed dome biogas system developed by SimGas for rural households. The system provides energy from recycled waste and produces a bio-fertilizer slurry for farms and gardens, the system can also be used for co-digestion of biodegradable materials.
SimGas and their partner Silafrica Tanzania Ltd.
In Tanzania and Kenya the 6 m3 system is available for 2.7 M TZS or 124,000 KES respectively (approx. $1,200 USD). Installment payments and credit plans available, were the payback period of the system is less than 2 years. Customers can opt to choose a monthly payment model and pay $45 USD per month (depending on the loan offer) and an upfront payment of $150 USD.
Few manufactured systems appear to be on the market in Sub-Saharan Africa.
The product also competes with other biogas systems like ADRA Cold Climate Biogas Plant; ARTI Biogas Plant, Sistema Biobolsa, FlexiBiogas,and Rehau Home Gas.
Goal 7: Ensure access to affordable, reliable, sustainable and modern energy for all.
Mass produced between SimGas’s two production sites located in Tanzania and Kenya.
IP Protected: WO2012074395A1.
The GesiShamba can be purchased from SimGas and third-party vendors. The system is delivered and installed by the company’s technicians. The company seeks retailers and provides information on how to partner with them.
The form of energy that is created by this system
Types of input waste
Manufacturer-specified system capacity
Description of other consumables required for energy production
Quanity of consumables required per hour
The size of this system
The fixed dome digestor modular with volumes ranging from 2 m3 to 20 m3. Weight begins at 20kg. For its construction high density polyethylene which represents a post-consumer plastic, is necesary to obtain injection- moulded components and extruded seals.
Provided by SimGas representatives through “after-sales service” and detailed user-training.
Manufacturers specify that the GesiShamba is an easy transportable system (100 kg with nested parts), high production outcomes of about 40%, and excellent slurry (bio-fertilizer) production.
A case study developed by South and East Africa Energy and Environmental Partnership (EEP) identified that users save $636 USD per year on fuel costs per
household, users can generate $408 USD per year per household, by using the bio slurry households experience up to a 200% increase in crop revenues, users can save about 1.5 hours per day when going from making a fire to switching on a biogas stove in a matter of seconds, a reduction on emissions by by 8.2 tonnes CO 2-eq per
year per household can be achieved and the usage of the systems could prevent deforestation by reducing consumption of 7.42 ton wood/charcoal per year per household.
Siemens Stiftung and SimGas.
There are some dangers associated with biogas digesters: fire hazard, leaks and negative pressure, but since this is a small/ family size system the hazards are also lower.
Vogeli, Y., Lohri, C.R., Gallardo, A., Diener, S., Zurbrugg, C., Anaerobic digestion of biowaste in developing countries: practical information and case studies. Laufenburg, Switzerland: Swiss Agency for Development and Cooperation SDC; 2014 [cited 20 Jul 2015].
Forbis-Stokes, A.A., Colon, J.J., Ouksel, L., Deshusses, M.A., Effective decentralized sewage sanitation with low CO2 footprint. Durhan (NC): Duke University; [cited 2015 Jul 20].
Buizer, M.S., The humanure carrousel, a biogas latrine sytem for Kenyan boarding schools [dissertation]. Delft University of Technology; 2014.
Complies with all relevant UNFCC requirements for the Clean Development Mechanism.
Baseline and monitoring methodologies:
SimGas also offer other companion products like: stoves, commercial burners, and biogas rice cookers.
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