Expression of Interest for a Solar System Project

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Tender No: GPS2025/EOI/SolarProject

Briefing Meeting: See details below or the tender documentation

Tender Closing Date: Tender Closed on: 2025-07-23 12:00:00

Required At: Glenstantia Primary School

Tender Category: Disconnections, Reconnections and Meter Reading Services, Electrical Engineering, Electrical Equipment and Supplies, Electrical Services, Solar, Wind, Gas (LPG, Hydrogen) and Other Renewable Energy

Tender Location: Gauteng, Pretoria

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Introduction

Glenstantia Primary invites experienced and competent solar electrical system installers to submit an expression of interest and estimate to install the first phase of a solar backup power solution to keep the school operational during power outages (whether due to load shedding or power failures). The first phase will be to supply power to the Administration Building and essential loads e.g. servers and security systems.

Purpose of the EOI

This Expression of Interest (EOI) represents the first phase of a two-stage procurement process. Its purpose is to pre-qualify and identify vendors with the necessary technical capabilities, relevant experience, regulatory compliance, and a cost estimate to undertake the project.

Scope of Work

Phase 1

The phase 1 requirement is for a solar backup solution with the following capacity:

Bi-Directional Inverter 40 to 50kVA, PV capacity or at least 60kW (peak), and Battery Storage between 180 and 200 kWh.
Provision should be made for some clean-up of the wiring of the electrical distribution board (DB) of the Admin Building to enable load separation of feeds to sub-DBs serving other buildings.
Preference will be given to a solution that incorporates some form of automated load measurement and -management so that e.g. sub-DBs can be powered to e.g. utilise excess PV power, but disconnected when e.g. there is a municipal power failure and limited PV power available.

Future Phases

The phase 1 solution should make provision for future expansion phase(s) to power the whole school, with a possible future total demand of: 100kVA Inverter, 150kWp PV and 400 kWh storage. The long term vision is to enable smart load measurement and smart load management for the whole school. Preference will be given to a phase 1 solution that incorporates or are compatible with smart load measurement and/or smart load management.

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