Artisanal oil palm processing is a traditional method widely used by small-scale producers, particularly in rural areas in Ghana. Artisanal processors supply more than 60% of the country’s palm oil.
The Sustainable Artisanal Oil Palm Processing Programme (SAPP) supports artisanal oil palm processing centres in the Central, Eastern, Ashanti, Western, Western North, Volta, and Ahafo regions of Ghana to modernize the centres with a financial facility given through technical advice and new equipment to increase the efficiency of the processing centres, improve working conditions and reduce emissions.
The assignment
The principal goal of this assignment is to install 60 biogas digester systems, each with a capacity of 100 cubic meters, at the modernized oil palm mills to be established in Ghana, based on the specification below:
| Construction | Site preparation and excavationElectrical worksPlumbing works |
| Biogas Digester Installation | Digester tank: High-density Polyethylene (HDPE) with reinforced concrete digester tankInlet chamberOutlet chamberGas holder Biogas burner Biogas storage bagGas pumpDesulfurizer Moisture trap |
Deliverables
The following deliverables will be expected from the consultant:
- Equipment blueprints
- 60 fully installed biogas digester systems across the designated oil palm centers.
- Comprehensive standard operating procedures (SOPs) covering the operation, safety, maintenance, and environmental management of the processing equipment and systems.
- ISO certifications for the biogas digester systems to ensure international compliance, operational efficiency, and safety standards.
- Structured preventive and corrective maintenance framework, including maintenance schedules, task lists, performance monitoring tools, troubleshooting guidelines, and recommendations for spare-parts management.
Schedule
The assignment is expected to last approximately 7 months starting from May 01, 2026, to November 30, 2026
| Activity | Timeline | Anticipated period |
| Concrete works | 4 months | May to August 2026 |
| Biodigester installation | 3 months | September to November 2026 |
Management of the Assignment
The assignment is commissioned by Solidaridad West Africa (SWA) as part of its implementation of the Sustainable Artisanal Oil Palm Processing Programme (SAPP). The Country Representative and the Project Manager will be the focal points for this assignment.
Qualification and Experience
- Minimum 5 years of experience in biodigester systems
- Relevant certifications
How to Apply
Interested consultants/companies should submit a proposal document including the following:
- Company Profile
- References to similar work done
- Production work plan and duration
- Post-production and installation plans
- Detailed Budget (USD)
All proposals should be submitted to consultantsswagh@solidaridadnetwork.org with the subject line ‘SAPP Biodigester Proposals’ by 5 PM GMT on 26 December, 2025.
Confidentiality Statement
All data and information received from Solidaridad, its project beneficiaries and other stakeholders for the purposes of this assignment are to be treated confidential and only be used in the execution of this assignment. All intellectual property rights arising from the execution of this Terms of Reference shall be assigned to Solidaridad. The contents of written materials obtained and used in this assignment may not be disclosed to any third parties without the expressed advance written authorization of Solidaridad.
For questions and clarifications related to this RfP you can contact our staff until 12 December 2025 via consultantsswagh@solidaridadnetwork.org and paakwesi.forson@solidaridadnetwork.org with the subject line ‘SAPP Clarifications’.
| Name of Project | Sustainable Artisanal Palm Oil Processing Programme |
| Assignment Type | Installation of a 100m3 biogas digester system |
| Duration of Assignment | 7 months |
| Title of Assignment | Small-scale oil palm mill construction |
| Place of work | Ghana |