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Limitations -
- Cost:Investment cost of the fixed dome and floating drum digesters are usually high ($800 and $1, 700) for rural farmers. This restricts the technology to farmers who can raise the capital needed to meet the basic requirements to ensure a successful operation of the plant.
- Feedstock and water: The technology is limited to locations where the organic feedstock and water are readily available. The potential for biogas technology is therefore limited to agricultural areas with access to sufficient water supplies, since regular supply of water is essential for the operation of biogas plants.
- Utilization: Given digester sizes have different rates of biogas generation. This means that utilization is restricted by the rate of production. However, when properly designed and sized, digesters should be able to supply gas continuously.
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