Tender Summary

Objectives

The primary objective is to appoint a qualified service provider to fully supply, deliver, install, and commission a solar-powered borehole system at the Jeffrey Zungu Sport Field. The project aims to establish a reliable, sustainable, and off-grid water supply for municipal recreational facilities using renewable energy technology.

Scope

The successful bidder will manage the complete lifecycle of the borehole installation, including:

• Supply and delivery of all specified hardware, piping, cabling, and storage components.
• Drilling, casing, and structural installation of the borehole well.
• Installation of a 6.6kW solar photovoltaic array consisting of eight 550W monocrystalline panels mounted on a galvanized ground structure with a 25° tilt.
• Integration of a 2.2kW three-phase AC submersible pump (80m head, 4m³/hr flow rate) connected via 100m of 4-core submersible cable and 50m of 40mm HDPE PN10 drop pipe.
• Setup of auxiliary systems including a 10,000-litre storage tank on a 4-metre stand, MPPT VFD pump inverter, water level probes, lightning arrester, and non-return valve.
• Full system commissioning, testing, and handover to ensure operational readiness.

Technical Requirements

• The service provider must hold valid electrical contractor accreditation with Trade Plus authorization, granting legal authority to install electrical systems and issue a Certificate of Compliance (COC).
• All submissions must utilize official municipal bidding forms alongside mandatory compliance documentation: tax clearance status, Central Supplier Database (CSD) registration, BBBEE certificate or sworn affidavit, company registration, director identification, and verified proof of physical address/municipal account standing.
• Quoted prices must be firm, valid for a minimum of sixty days, and inclusive of VAT where applicable.
• Evaluation applies an 80/20 preference point system, weighting eighty percent on price competitiveness and twenty percent on designated socio-economic transformation goals (demographic ownership criteria and local geographic presence).
• A compulsory site briefing is mandated prior to bid submission.

Skills Requirements

• Proven expertise in geotechnical drilling, well construction, and submersible pump deployment.
• Certified electrical contracting qualifications with demonstrated capability in solar PV integration and statutory compliance certification.
• Technical proficiency in configuring variable frequency drives (VFDs) and maximum power point tracking (MPPT) controllers for optimized water pumping performance.
• Project management competencies to coordinate logistics, installation sequencing, safety protocols, testing, and commissioning within stipulated timeframes.
• Familiarity with municipal supply chain governance, procurement regulations, and audit-ready documentation practices.

Key Terminology & Clarifications

• Trade Plus Authorization & COC: A South African regulatory mandate requiring only accredited electrical contractors to install electrical infrastructure and issue a Certificate of Compliance, ensuring all work meets national safety, wiring, and engineering standards.
• 80/20 Preference Point System: A public procurement scoring model where eighty percent of the evaluation weight is assigned to competitive pricing, and twenty percent is allocated to specific transformation objectives such as black ownership, women/youth/disability representation, and local business location.
• MPPT VFD Pump Inverter: An advanced electronic controller that continuously adjusts electrical load to extract peak power from solar panels while dynamically modulating pump speed to match real-time water demand, maximizing efficiency and reducing wear.
• Dry-Run Protection: An automated safety feature that instantly cuts power to the pump when water levels fall below a critical threshold, preventing motor overheating, seal failure, and mechanical damage.