TENDER NOTICE: Request for Offer (RFO) for Installation of Solar at Kingtom Treatment Plant
Job Description
Request for Offer (RFO) for
Installation of Solar at Kingtom Treatment Plant
Ref. FRT-LHT-51605-Installation of Solar at Kingtom Treatment Plant
| GOAL is completely against fraud, bribery and corruption. GOAL does not ask for money for offers. If you have any serious concern over wrongdoing please report it at www.safecall.co.uk/report or email goal@safecall.co.uk . All information is treated confidentially by Safe call and you may remain anonymous if you wish. |
About GOAL
Established in 1977, GOAL is an international humanitarian and development agency committed to working with communities to achieve sustainable and innovative early response in crises and to assist them to build lasting solutions to mitigate poverty and vulnerability. For more information on GOAL and its operations please visit https://www.goalglobal.org/.
GOAL Sierra Leone has given out this work to a professional contractor. The standard and quality of your completed work is more paramount to the organization. Poor result will not be accepted and will require proper correction and will disqualify you to get similar contract with GOAL Sierra Leone.
Timelines
| Line | Item | Date, year, time, and time-zone |
| 1 | RFO published | 29th June 2026. |
| 2 | Closing date and time for receipt of offers | 13th July 2026 @16:00GMT |
| 3 | Date contract is expected to be signed | 20th July 2026 |
Overview of Requirements
GOAL is looking to install solar at our Kingtom treatment plant. GOAL invites prospective suppliers to submit offers that meet or exceed GOAL’s requirements as outlined for the construction (TOR/Specifications/Scope of Works/Drawings as in appendix 2)
Conditions of Offer Submission
4.1 Offers must be completed in English.
4.2 Vendors must respond to all requirements set out in this RFO and complete their offer in the format requested in Annex 1.
4.3 In the event of a contract being awarded to a vendor that has knowingly withheld relevant information or otherwise misled GOAL in the evaluation process in any way, then that contract will be rendered null and void.
4.4 Any conflicts of interest involving a vendor must be fully disclosed to GOAL particularly where there is a conflict of interest in relation to any recommendations or proposals put forward by the vendor.
4.5 GOAL is under no obligation to accept the lowest or any other offer received in response to this RFO and reserves its right to reject any or all the offers (part/full) including incomplete offers without assigning reason whatsoever.
4.6 Information supplied by vendors will be treated as contractually binding.
4.7 GOAL’s standard payment terms are by bank transfer within 30 days after satisfactory implementation and receipt of documents in order.
4.8 This document is not construed in any way as an offer to a contract
4.9. The vendor shall seek written approval from GOAL before entering into any sub-contracts for the purpose of fulfilling this contract. Full details of the proposed subcontracting company and the nature of envisioned engagement of sub-contractor/s into this contract shall be included in vendor’s offer.
4.10. GOAL reserves the right to refuse any subcontractor that is proposed by the vendor.
4.11. GOAL and all contracted suppliers, and their subcontractors, associates or partners must act in all its procurement and other activities in full compliance with donor requirements and the highest ethical standards. GOAL has zero tolerance for fraud, bribery or corruption in any form and will reject any offers if the organization determines that the vendor, any of its personnel, or its sub-contractors, has, directly or indirectly, engaged in corrupt, fraudulent, collusive, coercive, or obstructive practices in competing for the contract in question;
4.12 Terrorism and Sanctions: GOAL does not engage in transactions with any terrorist group or individual or entity involved with or associated with terrorism or individuals or entities that have active exclusion orders and/or sanctions against them. GOAL shall therefore not knowingly purchase supplies or services from companies that are associated in any way with terrorism and/or are the subject of any relevant international exclusion orders and/or sanctions. If you submit an offer based on this request, it shall constitute a guarantee that neither your company nor any affiliate or a subsidiary controlled by your company are associated with any known terrorist group or is/are the subject of any relevant international exclusion order and/or sanctions. A contract clause confirming this may be included in an eventual purchase order based on this request.
Quality Control
3rd party companies may be contracted by GOAL to carry out random quality inspections of work carried out by the contracted party. The cost of the quality control inspections will be covered by GOAL.
GOAL may choose to visit vendors’ premises, including sub-contractors (if any) to perform additional checks as part of the evaluation process. Vendors will be notified in advance of a visit.
Submission of Offers
This competition is being conducted under GOAL’s Request for Offer procedure. The Contracting Authority for this procurement is GOAL. Under this procurement process, we expect all offers received and analyzed to be the best and final offer.
Any queries about this RFO should be addressed in writing to GOAL via email on procurementfreetown@sl.goal.ie Please include the reference number FRT-LHT-51605-Intallation of Solar at Kingtom Treatment Plant and words “clarification required” in the subject line.
Offers must be delivered in the following way:
By email to rfo@sl.goal.ie and in the subject field state:
- FRT-LHT-51605-Installation of Solar at Kingtom Treatment Plant.
- Name of your company with the title of the attachment
- Number of emails that are sent e.g. 1 of 3, 2 of 3, 3 of 3.
(Proof of sending does not equal proof of receipt. GOAL is not responsible for any technical faults that may prevent reception of your email.)
All documents submitted must be in scan or PDF format. Any excel or word documents must be accompanied by a PDF or scan version of the document.
Links to share drives will not be accepted unless it is necessary due to file size. All documents submitted via links to shared drive must not be modified after the closing date and time for the receipt of offers (timestamp must clearly indicate that they haven’t been modified). Documents submitted via links to a shared drive that have been modified after the closing date and time will not be accepted.
OR
- Physical submissions delivered to:
Procurement team
6 The Maize Off King Street, Tengbeh Town between 9:00am to 4:00pm from the 29/06/26 to the 13/07/26.
The offer envelope must be labelled with your company name and the reference “Request for Offer ref. a) FRT-LHT-51605-Installation of Solar at Kingtom Treatment Plant”
Important: Offers transmitted in any other manner or offers received after the deadline date and time will not be considered.
Submission checklist
Documents required to be submitted as response to this RFO are:
| Line | Item | How to submit | Tick attached |
| 1 | Workplan | Complete, sign, stamp and submit titled ‘Technical offer’. | |
| 2 | Appendix 1-Company Information | Complete, sign, stamp and submit titled ‘‘Company Information’’ | |
| 3 | Appendix 2-Terms of Reference | Complete, sign, stamp and submit titled ‘‘Terms of Reference’’ | |
| 4 | Appendix 3- Site Visit Form | Complete, sign, stamp and submit titled ‘‘Site Visit Form’’ | |
| 5 | Financial Offer (Bill of Quantities) | Complete, sign, stamp and submit titled ‘’Financial Offer in your own template’’ | |
| 6 | Evidence of your team’s ability to interpret BOQ, scope of work including fittings and required dimensions for layout/casting/modifications. | Submit available certificates of site technician as evidence of completion of training on building & construction or related skills. |
Evaluation Process
| Phase # | Evaluation Process Stage | The basic requirements with which proposals must comply with |
| The first phase of evaluation of the responses will determine whether the offer has been submitted in line with the administrative instructions and meets the essential criteria. Only those offers meeting the essential criteria and do not fall under any of the listed exclusion criteria will go forward to the second phase of the evaluation. | ||
| 1 | Administrative instructions |
Proposals must have met the deadline stated in section 2 of this RFO, or such revised deadline as may be notified to vendors by GOAL. Vendors must note that GOAL is prohibited from accepting any offers after that deadline.
Proposals must be delivered in the method specified in section 6 of this document. GOAL will not accept responsibility for offers delivered by any other method. Offers delivered in any other method may be rejected.
Offers must conform to the Submission of Offers format laid out in section 6 of this RFO or such revised format and structure as may be notified to Vendors by GOAL. Failure to comply with the prescribed format and structure may result in your offer being rejected at this stage.
The vendors must confirm that the period of validity of their proposal is not less than 90 (ninety) days. |
| 2 | Exclusion criteria | NA |
| 3 | Essential Criteria |
|
| Each proposal that conforms to the Exclusion and Essential Criteria will be evaluated according to the Award Criteria given below by GOAL. | ||
| 4 | Award Criteria | Offers will be awarded marks under each of the award criteria listed in this section to determine the lowest price technically acceptable offer.
Below is the breakdown for the quality requirement.
|
| 5 | Due Diligence Checks | Successful offers will be screened in line with Anti-Terrorism and Sanction checks. GOAL will not contract with vendors who do not pass those checks as per clause 4.12 of this document. |
| 6. | WASH lead technical feedback from review of documents. |
|
Appendix 1- Company Information
| Company Name | ||
| Registered address of the vendor | ||
| Year Established | ||
| Please state the name of any other persons/organisations (except your company) who will benefit from this contract (GOAL compliance matter) | ||
| Parent company | ||
| Ownership | ||
| Do you have associated companies? Tick relevant box. If YES – provide details for each company in the line below. | Yes/No | |
| Associated company details (if applicable) | ||
| If successful, do you agree to work under GOAL’s Terms and Conditions of contract (attached as Appendix 4). | Yes/No | Comments/Attachments |
| If successful, do you agree to sign the contract as per GOAL’s contract template (attached as Appendix 5) | Yes/No | Comments/Attachments |
| If successful, do you agree to abide by GOAL’s Supplier code of conduct for the delivery of goods/services/works? (attached as Appendix 6) | Yes/No | Comments/Attachments |
Note that wining vendor/s will be required to submit further information as part of supplier registration process before the finalisation of contract award.
| By submitting an offer under this Request for Offer RFO (FRT-LHT-51605-Installation of Solar at Kingtom Treatment Plant) the vendor hereby asserts that the following statements are correct at the time of submission; and further undertakes to inform GOAL of any changes in status of these matters. |
| The vendor is not bankrupt or is being wound up, neither are its affairs are being administered by the court nor has entered into an arrangement with creditors or has suspended business activities or is in any analogous situation arising from a similar procedure under national laws and regulation. The vendor is not the subject of proceedings for a declaration of bankruptcy, for an order for compulsory winding up or administration by the court or for an arrangement with creditors or of any other similar proceedings under national laws and regulations. Neither the vendor, a director or Partner, has been convicted of an offence concerning his professional conduct by a judgement which has the force of res judicata nor been guilty of grave professional misconduct in the course of their business. The vendor has fulfilled all its obligations relating to the payment of taxes or social security contributions in Ireland or any other state or country in which the vendor is located or doing business. Neither the vendor, a director or Partner has been found guilty of fraud, money laundering, corruption; convicted of being a member of a criminal organisation; nor of serious misrepresentation in providing information to a public buying agency The vendor has not contrived to misrepresent its Health & Safety information, Quality Assurance information, or any other information relevant to this application. That all data subjects have specifically consented to the use and storage of their data by GOAL for the purpose of analysing the offers and awarding a contract under this RFO; and further understood that the personal data may be shared internally within GOAL and externally if required by law and donor regulations; and may be stored for a period of up to 7 years from the award of contract. |
I confirm that my offer has a validity of <insert number> of days. If your offer does not have this validity, please state what the validity of your offer will be.
I confirm that the proposal and the costs provided to accompany it are an accurate reflection of the costs that will be charged to GOAL according to the information provided in this request for offer; and that there are no other costs associated with using the service that my company offers. I also confirm that I have the authority to sign on behalf of the company that is submitting this offer.
| Signed: | |||
| Print name: | Position: | ||
| Company Name: | Date: | ||
| Address: | |||
Appendix 2- Terms of Reference
Technical specifications – solar power system for kingtom Faecal sludge treatment plant (FSTP)
- Project overview
GOAL is seeking a qualified supplier to design, supply, install, and commission a complete hybrid solar photovoltaic (PV) system at the Kingtom Faecal Sludge Treatment Plant.
The system will supply electricity mainly for ventilation equipment installed in two greenhouses used for drying dewatered sludge.
The system shall operate as a hybrid system combining solar PV, battery storage, and the national electricity grid provided by EDSA.
- Description of electrical load
Each greenhouse is equipped with:
- 2 × fans rated at 0.37 kW each
- 2 × air extractors rated at 1.1 kW each
This means a total of:
- 4 fans and 4 air extractors will be connected to the solar system.
The system shall support:
- Normal operation: 2 fans + 4 air extractors
- Worst-case operation: 4 fans + 4 air extractors simultaneously
The system should prioritize:
- Solar power
- Battery storage
- Grid (EDSA) backup when required
- Solar photovoltaic system
- Minimum installed capacity: 16 kW or slightly higher, depending on the available panel ratings.
- Roof area: approximately 6 m × 60 m
- Roof tilt: approximately 20°.
The supplier may install:
- Roof-mounted or independent metal structure (as required for optimal performance)
Supplier scope:
- PV modules
- Mounting structures
- Electrical accessories and protections
- Installation and commissioning
- Battery storage system
- Minimum capacity: 30 kWh or slightly higher, depending on the batteries used.
- Technology: Lithium
Includes:
- Battery Management System (BMS)
- Protection devices
- Complete accessories for safe operation
Battery sizing may be optimized in a hybrid configuration with EDSA backup, provided operational reliability is maintained.
- Inverter and electrical system
- Minimum capacity: 15 kVA hybrid inverter
- Must support solar, battery, and grid (EDSA) operation.
Requirements:
- The system shall be capable of operating using solar, battery, and grid (EDSA) power sources.
- Solar priority operation
- Grid backup when solar and battery are insufficient
Taking into consideration:
- The horizontal and vertical distances between the solar array and the control room are approximately 20 meters.
- Cable routing between the solar field and control room should preferably be installed underground to prevent damage from vehicles and equipment.
- The system shall include connection to the EDSA supply via a dedicated AC input into the main control panel
- Protection systems (critical requirement)
The system should include full electrical protection, including:
Lightning and surge protection:
- DC surge protection devices (SPDs) at PV array and inverter input
- AC surge protection devices at inverter and grid input
- Proper earthing/grounding system for:
- PV mounting structures
- Inverter system
- Battery system
- Control room electrical system
- Bonding of all metallic structures
The protection system shall ensure safety against lightning-induced surges and electrical faults.
- Installation and mechanical works
- PV modules shall be installed in a manner that minimizes the load on the existing roof structure. To reduce loading on individual roof spans, panels should preferably be distributed along the length of the roof rather than concentrated across its width, subject to the supplier’s structural assessment.
- Mounting structures shall be wind-resistant and durable
- Installation shall follow good engineering practice
- Control room (civil works requirement)
- Size: 2 m × 2 m
- Construction: reinforced concrete slab and block walls
- Fully enclosed and weatherproof
includes:
- Batteries
- Inverter(s)
- Control and distribution panel (including EDSA input connection)
The room should include ventilation and safe electrical clearances.
- Supplier responsibilities
The supplier shall:
- Design and supply a complete hybrid solar system
- Integrate solar, battery, and EDSA grid supply
- Provide all materials and installation works
- Include full protection systems (including lightning protection)
- Ensure safe and reliable operation under worst-case load conditions
- Deliver a fully functional turnkey system
- General requirements
All equipment shall be:
- New, industrial-grade
- Fully compatible as a system
- Compliant with relevant international electrical and solar standards
Appendix 3- Site Visit Form
