Supply, installation and commissioning of sulphur trioxide (so₃) skids and common plant for ESKOM

• Closing date for EOI submission: 09 July 2026 at 10:00 South African Standard Time (SAST).

• Contact person: Tinyiko Makhubele, Senior Advisor Procurement.
• Telephone: 011 800 6865.
• Email: [email protected].

• Submit electronically via Eskom E-tendering site by the closing date and time (09 July 2026, 10:00 SAST).
• Upload all documents in PDF and Excel format.
• Maximum upload size per document: 500 MB. Total submission size must not exceed 4 GB.
• Verify that the submission status is marked as 'complete' before the deadline.
• Supplier Help Manual and video guide are available on the Eskom E-Tendering page.
• Responsibility for timely submission lies solely with the supplier.

• Mandatory: Registration on Central Supplier Database (CSD).
• Likely required: CIDB registration and grading for construction-related works.
• B-BBEE compliance: Must provide a valid B-BBEE Certificate and level. Foreign companies must submit a letter from a SANAS-accredited B-BBEE Verification Agent confirming they cannot be assessed due to lack of South African presence.
• Experience: Must demonstrate prior work on similar projects within Eskom Power Generation or other utilities, including role (main contractor, subcontractor, OEM partner).
• Financial capacity: Must prove ability to undertake large-scale projects of this magnitude.
• OEM status: Must have or be capable of obtaining an OEM status letter for SO3/NH3 systems or a partnership letter with the OEM.
• Compliance: Must adhere to South African occupational health and safety regulations.

• Scope: Full turnkey delivery including procurement, design, manufacturing, shipping, transportation, storage, decommissioning, installation, testing, commissioning, documentation, and handover.
• Deliverables: Unit 1 to 6 Sulphur trioxide (SO3) skids and common plant.
• Key components: Steam stations, steam drain stations, sulphur storage tanks with auxiliaries (submerged Sulphur Circulating Pumps, sulphur offloading pumps), burner and convertor vessels, sulphur injection lances, process air heaters, process blower/fan, pressure reducing stations, associated pipeworks, valves, electrical apparatus, and control instrumentation.
• Additional works: Installation of a Sulphur supply line ring main, enclosure for the plant, and steam supply tie-in from the cold reheat or auxiliary steam range supply manifold (including all associated pipeworks).

• Company registration: Provide valid company registration number.
• CSD registration: Provide CSD registration number.
• CIDB registration: Provide CIDB registration number and grading (if applicable).
• B-BBEE: Submit B-BBEE Certificate and level. Foreign companies must provide a SANAS-accredited verification letter.
• Professional registration: Must have an ECSA-registered professional (Pr Eng or Pr Tech Eng) with at least 4 years of experience.
• Health and safety: Confirm compliance with South African occupational health and safety regulations.
• Local presence: Confirm availability of local teams and resources in South Africa.
• Financial history: Disclose any past project failures due to financial constraints.
• Financial capacity: Provide evidence of financial capability to execute projects of this scale.
• OEM status: Provide or obtain an OEM status letter for SO3/NH3 systems or a partnership letter with the OEM.

• Submit a valid B-BBEE Certificate and state the B-BBEE level.
• Foreign companies: Provide a letter from a SANAS-accredited B-BBEE Verification Agent confirming inability to be assessed due to lack of South African presence.

• Provide company registration number.
• Provide CSD registration number.
• Provide CIDB registration number and grading (if registered).
• Indicate whether the company is local (South African) or international.
• Specify typical lead times from contract placement to: design completion, common plant and first unitized skid commissioning, and unitized skids commissioning between units.
• Employ an ECSA-registered professional (Pr Eng or Pr Tech Eng) with at least 4 years of experience.
• Confirm availability of local teams and resources in South Africa.
• Disclose any history of project failure due to financial constraints.
• Provide financial capacity details for projects of this scale.
• Provide or obtain an OEM status letter for SO3/NH3 systems or a partnership letter with the OEM.

• The Invitation to Tender includes all annexures and any additional requirements referenced in the Tender Data. • Addenda will be issued in the same manner as the original tender and become part of the tender documents. • All communications with Eskom must be directed to the Eskom Representative and must be in writing.

• Closing date and time – as stated in the Tender Data (all times are South African Standard Time, SAST). • Compulsory site visit / clarification meeting – date, time and venue are listed in the Tender Data; attendance is mandatory. • Addenda, clarifications and extensions – published on the Eskom Tender Bulletin and NT e‑Tender Portal; tenderers must check these platforms regularly.

• All communications must be addressed in writing to the Eskom Representative named in the Invitation to Tender. • The Representative’s name, email, telephone and postal address are provided in the Tender Data (only those details may be used). • Clarification requests must be submitted in writing to the Representative; Eskom will publish all queries and responses on the Tender Bulletin and NT e‑Tender Portal.

• Submit one original tender in paper form and one complete hard‑copy copy to the address and tender box specified in the Tender Data by the closing date and time (SAST). • For e‑tendering, upload the full tender package to the Eskom Tender Bulletin site and finalise it before the closing time – electronic submission only; no paper submission will be accepted. • All documents must be in English, completed in ink (no pencil), and be readable and non‑corrupt. • Sign the original (or electronic) tender; the signatory is liable for the submission. • Package the original and the copy in separate envelopes marked “ORIGINAL” and “COPY”. If an electronic copy is required, mark it “ELECTRONIC COPY”. Seal all envelopes together in an outer package labelled “Confidential” with the Eskom address, Invitation to Tender number, tenderer’s name, physical address, email and telephone of the authorised representative. • Return all mandatory tender returnables (forms, certificates, schedules, etc.) fully completed by the closing date and time. • Proof of posting or courier does not constitute proof of delivery; Eskom is not responsible for mis‑addressed or unsealed packages. • Late tenders will be rejected; the e‑tendering system will not allow submissions after the deadline. • Attendance at any compulsory site visit or clarification meeting is mandatory – failure to attend results in disqualification. • Sub‑contracting 100 % of the scope of work is prohibited; such tenders will be deemed ineligible.

Tender closing time 2.2 Ensure that Eskom has received the complete original tender and one (1) complete hard copy of the original tender at the address and in the tender box or e-mail address specified in the Tender Data by no later than the closing date and time for tender submission. Proof of posting or of courier delivery does not equate to proof of delivery. Eskom will not accept a tender submitted by e-mail unless stated otherwise in the Tender Data. For E-tendering the tenderer must upload and finalize the tender via Eskom Tender bulletin site on the Eskom E- tendering page by no later than the closing date and time for tender submission. It remains the sole responsibility of the tenderer to ensure that the documents (PDF/Excel) are submitted and accessible for downloading/evaluation without any challenges as well as they are not corrupt or unreadable. It is the tenderer’s responsibility to ensure that their tenders documents are submitted/uploaded, and the submission is finalised before the closing date and time For E-tendering tenderers are not permitted to deposit a tender into the Eskom tender box only electronic submission via the Eskom Tender bulletin site on the Eskom E- tendering page will be accepted.

• Eligibility – tenderer must meet the criteria set out in the Tender Data and must not be restricted from doing business with Eskom or any state‑owned entity. • No double‑counting – a criterion will not be measured in more than one evaluation phase. • Functionality – if listed as a criterion, the tender must meet the minimum functionality threshold stated in the Tender Data to progress. • Financial analysis – Eskom will assess the financial risk of the supplier; any required mitigating measures must be satisfied. • Price evaluation – rates must include all duties, taxes (incl. VAT) and levies as of 14 days before the closing date; prices must be fixed for the contract duration and quoted in South African Rand unless otherwise instructed. • B‑BBEE – level is scored from the CSD report or certificate/affidavit. If a pre‑qualification criterion, proof must be submitted at closing; fraudulent or expired documents lead to disqualification. • PPPFA point allocation – lack of valid B‑BBEE proof results in zero PPPFA points but does not automatically disqualify if the tender is otherwise responsive. • Specific Goals – must be supported by documentation; failure to provide results in zero points within the 90/10 or 80/20 weighting. • Ranking – total score = price score + specific‑goals score (PPPFA). • Objective criteria – may be applied only if expressly stipulated; functionality and B‑BBEE scores cannot be used as objective criteria. • Reverse e‑auction – if indicated, tenderers must submit a complete tender without prices; prices will be ignored.

• Scope – procurement, design, manufacture, shipping, transportation, storage, de‑commissioning, installation, testing, commissioning, documentation and hand‑over of six (6) Sulphur Trioxide (SO₃) skids and associated common plant. • Tenderer must complete the Acknowledgement Form indicating whether the tender covers the whole or part of the works/services/supply. • All annexes and additional requirements referenced in the Tender Data form part of the tender documents and must be complied with. • Any discrepancies or missing documents identified on receipt of the Invitation to Tender must be reported to the Eskom Representative immediately.

• Eskom will not reimburse any costs incurred by tenderers for preparation, submission, testing or negotiation of the tender. • Upon receipt of the Invitation to Tender, tenderers must review the documents and immediately notify the Eskom Representative of any discrepancies or missing items. • The Acknowledgement Form must be completed and submitted with the tender, clearly stating whether the tender covers the whole or part of the works/services/supply.

• Include all duties, taxes (incl. VAT) and levies payable as of 14 days before the closing date. • Quote fixed rates and prices for the full contract duration; rates must not be subject to adjustment except as expressly permitted. • Prices must be quoted in South African Rand unless otherwise instructed; use the exchange rate and base date specified in the Tender Data. • No unauthorised alterations – any changes to the tender documents must be initialed by all signatories; corrections may only be made to comply with instructions or to fix errors. • Alternative tenders – may be submitted only if a main tender is also submitted and if the Invitation to Tender allows it. • Price corrections – Eskom may request clarification or correction of pricing errors; the corrected total, once agreed, is binding. • Cataloguing – if required, include a line item for cataloguing in the pricing schedule; Eskom will pay for this service. • Functionality – if a functionality criterion applies, meet the minimum threshold to remain in evaluation. • Financial risk – Eskom will assess the supplier’s financial stability; any required mitigating measures must be satisfied. • Price evaluation – consider CPA, FOREX, commodity exposure, unconditional discounts, technical adjustments, PV and invoicing rates. • Arithmetical errors – will be corrected by Eskom; discrepancies are resolved in favour of the amount in words. • Specific Goals – must be supported by documentation; failure results in zero points within the 90/10 or 80/20 weighting. • Ranking – total score = price score + specific‑goals score (PPPFA). • Objective criteria – may be applied only if expressly stipulated; functionality and B‑BBEE scores cannot be used as objective criteria.

• Pricing – include all duties, taxes (incl. VAT) and levies payable as of 14 days before the closing date; rates must be fixed for the entire contract period and not subject to adjustment except as expressly allowed. • Currency – quote all prices in South African Rand unless the Tender Data specifies another currency; use the exchange rate and base date stipulated. • No unauthorised alterations – any changes to the tender documents (except to correct errors or comply with instructions) are prohibited; all alterations must be initialed by every signatory. • Alternative tenders – may be submitted only if a main tender is also submitted and if the Invitation to Tender permits it. • Price corrections – Eskom may request clarification or correction of pricing errors during evaluation; the corrected total, once agreed, is binding. • Cataloguing – if required, a line item for cataloguing must be included in the pricing schedule; Eskom will pay for this service. • Security for performance – if required, tenderer must name at least two financial institutions likely to provide the security; Eskom may reject unsuitable institutions.

• Legislation – comply with all applicable laws and regulations (National Treasury instructions, CIDB regulations, PPPFA, Amended B‑BBEE Codes, COIDA, OHS Act, and Eskom’s SHEQ requirements). • SHEQ – provide proof of Safety, Health, Environment and Quality systems, policies and capabilities at the closing date; related costs and personnel must be reflected in the tender. • CIDB – if a CIDB grade is stipulated, be registered with the CIDB by the closing date or be able to register within 21 working days; submit proof of registration (or application) as a mandatory returnable. • CSDG – Contract Skills Development Goals apply to contracts ≥12 months and ≥R5 million (or CIDB grade ≥ 7). • CPG – Contract Participation Goals apply to construction works contracts (GB/CE classes) of ≥6 months duration with ≥25 % subcontracting. • B‑BBEE – submit a valid CSD report or certificate/affidavit at closing; fraudulent or expired documents lead to disqualification and possible reporting to the B‑BBEE Commission. • SDL&I Undertaking – must be completed and submitted by contract award. • Misrepresentation – any false or misleading information will result in disqualification and may lead to suspension from state‑owned contracts for up to ten years.

• Comply with all relevant legislation, including the Occupational Health and Safety Act and Eskom’s Safety, Health, Environment and Quality (SHEQ) requirements. • Provide proof of SHEQ systems, policies and capabilities at the closing date; associated costs and personnel must be reflected in the tender. • CIDB registration – if required, be registered or capable of registration within 21 working days and submit proof as a mandatory returnable. • Contract Skills Development Goals (CSDG) apply to contracts of 12 months or more and meeting the value/grade thresholds. • Contract Participation Goals (CPG) apply to construction contracts (GB/CE classes) of at least 6 months duration with ≥25 % subcontracting. • Misrepresentation or falsification of information may lead to disqualification, reporting to the B‑BBEE Commission, suspension for up to ten years, or legal action. • Submit the SDL&I Undertaking by contract award. • All clarifications and addenda will be published on the Eskom Tender Bulletin and NT e‑Tender Portal. • Grounds for rejection include collusion, bid‑rigging, fraud or other illegal activity. • If a reverse e‑auction is used, tenderers must submit a complete tender without prices.

• Eskom may enter into mandated negotiations with selected tenderer(s) in line with approved procurement policies. • Eskom disclaims liability for any inaccuracy or incompleteness in the tender documents and for any loss incurred by tenderers participating in the process. • Tender validity – the tender remains valid for acceptance for the period stated in the Tender Data; Eskom may request an extension, and refusal to extend will result in exclusion from further consideration. • Confidentiality – all procurement information is confidential; documents may only be used for preparing and submitting the tender. • Mandatory site visits/clarification meetings – attendance is compulsory as per the Tender Data. • B‑BBEE scoring – proof must be submitted at closing if it is a pre‑qualification criterion; fraudulent or expired certificates lead to disqualification. • PPPFA points – lack of valid B‑BBEE proof yields zero points but does not automatically disqualify a responsive tender. • Specific Goals – must be supported by documentation; failure results in zero points within the 90/10 or 80/20 weighting.

• Eligibility – tenderer must satisfy the eligibility criteria set out in the Tender Data and must not be restricted from doing business with Eskom or any state‑owned entity. • 100 % sub‑contracting of the scope of work is prohibited; such tenders will be deemed ineligible and disqualified.

• No double‑counting – a criterion will not be measured in more than one evaluation phase. • Functionality – if listed, the tender must meet the minimum functionality threshold in the Tender Data to proceed. • Financial analysis – Eskom will assess the supplier’s financial risk and may require mitigating actions. • Price evaluation – rates must include all duties, taxes (incl. VAT) and levies as of 14 days before closing; prices must be fixed for the contract duration and quoted in Rand unless otherwise instructed. • B‑BBEE – level is scored from the CSD report or certificate/affidavit; proof must be submitted at closing if it is a pre‑qualification criterion. • PPPFA – lack of valid B‑BBEE proof results in zero PPPFA points but does not automatically disqualify a responsive tender. • Specific Goals – must be supported by documentation; failure results in zero points within the 90/10 or 80/20 weighting. • Ranking – total score = price score + specific‑goals score (PPPFA). • Objective criteria – may be used only if expressly stipulated; functionality and B‑BBEE scores cannot be used as objective criteria. • Reverse e‑auction – if indicated, tenderers must submit a complete tender without prices; prices will be ignored.