REQUEST FOR PROPOSALS: CONSTRUCTION AND INSTALLATION OF BIOGAS DIGESTER PLANT

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 excavation
Electrical works
Plumbing works Biogas Digester Installation Digester tank High-density Polyethylene (HDPE) with reinforced concrete digester tank Inlet chamber Outlet chamber Gas holder Biogas burner Biogas storage bag Gas pump Desulfurizer Moisture trap

Deliverables

• 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

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.

Contact Information

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’.