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ENGINEERED ENERGY RESILIENCE

South Africa's energy challenge demands a serious partner.

Rising Eskom tariffs. Unreliable grid power. A grid that can no longer be counted on. SA Solar exists to solve this: for individual homeowners, commercial operators, industrial facilities, farms and utility-scale developers alike.

Live model · single-axis tracker
Tracker angle +0.0°
Plane-of-array 0 W/m²
Array output 0.00 MW
Site time 00:00
0+ Successful installations
0+ yrs Combined renewable experience
Level 4 B-BBEE contributor
In-house Engineering, design & installation
Residentialutility Scale capability, proudly South African

THE NETWORK YOU SIT ON

Every kilowatt you generate changes a flow somewhere.

This is a linearised load flow of the national transmission network, solved live in your browser. Raise the load-shedding stage, trip a corridor, or put your own site on solar and battery, and every flow on the diagram re-solves.

Load-shedding stage

12:00

Your site

Cape corridor
Demand shed
Slack generation
Worst branch

Click any line to trip it. If a remaining branch then exceeds its rating, its overload relay operates 1.2 seconds later and it trips too: a cascade, exactly as an N-1-1 contingency study models it.

Modelled, not measured. DC load flow on a 26-bus reduction of the national network, 100 MVA base. Topology and ratings are representative, not Eskom's operational data.

02 / WHAT WE ACTUALLY BUILD

We design what we install.

A solar system is eight engineered decisions stacked on top of each other. Get one wrong and the savings case fails quietly, years later. Select a layer to read how we specify it.

Scroll to separate · select a layer

03 / OUR SOLUTIONS

What we do.

01

Residential solar & battery storage

Custom-designed home solar systems that reduce or eliminate your Eskom dependence. Grid-tied, hybrid and off-grid options available.

Residential solar

02

Commercial & industrial solar

Large-format solar systems for businesses, warehouses, factories and commercial properties. Engineered to offset peak demand and maximise ROI.

C&I solar

03

Agricultural & irrigation energy

Solar-powered irrigation, pump systems and farm energy solutions. Designed for yield, reliability and the demands of agricultural operations across Southern Africa.

Agricultural energy

04

Mining & remote power systems

Robust hybrid and off-grid energy systems built for remote sites, mines and operations where grid power is unreliable or non-existent.

05

Battery energy storage (BESS)

Standalone and integrated battery storage for load shifting, backup power and grid independence, from household scale to utility-scale deployments.

06

Hybrid & off-grid microgrids

Complete microgrid solutions for industrial parks, estates, agricultural hubs and remote communities. Engineered for reliability and long-term performance.

07

EV charging infrastructure

Commercial and fleet EV charging solutions, integrated with your solar system to reduce charging costs and futureproof your operations.

08

Energy audits & optimisation

Before we design anything, we understand your energy use. Our audits identify where you're losing money and how solar can solve it.

09

Utility-scale renewable energy

Large-format solar parks, wind integration and renewable energy projects for IPPs, municipalities and enterprise clients.

WHAT THE GROUND GIVES BACK

A bifacial module earns its premium underneath.

Sweep along the back of the module. Every hairline is a ray that reached the ground and came back; the ones missing were blocked by the next row. That is the entire argument for row pitch, and it is solved here, live.

Ground cover

-32°
Rear irradiance
Bifacial gain
View factor to ground
Hemisphere

132 rays per sample over the rear hemisphere, Lambertian ground, bifaciality 0.70, GHI 1000 W/m². Row geometry is the plant in the hero: 6.5 m pitch, 4.4 m chord, 1.9 m torque tube.

04 / THE NUMBERS

Model the return before you commit to anything.

We provide detailed financial modelling as part of every proposal. This is the same arithmetic, running live, so you can see the shape of the case before you speak to us.

25-year cash position

Specific yield 1 650kWh/kWp/yr
Module degradation 0.5% / yr
Horizon 25years
System size
Indicative capex
Payback
25-year net position
Annual generation
CO₂ avoided

Indicative only. Figures assume a well-oriented array at 1 650 kWh/kWp/yr, 0.5% annual module degradation, and installed costs typical for each scale. Real proposals are modelled against your actual tariff structure, load profile and site constraints, including demand charges, which are not represented here. Section 12B tax treatment is not included.

05 / HOW WE WORK

Our process.

01

Energy assessment

We start by understanding your usage, tariff structure, site constraints and goals, whether you're a homeowner or a facility manager. No assumptions. No generic proposals.

02

Engineering & design

Our in-house team designs a system around your actual needs. Correct sizing, quality components, optimised for savings and long-term performance.

03

Installation

Professional installation by qualified electricians and certified solar engineers. We work to deadline, communicate throughout, and take responsibility for the outcome.

04

Commissioning & handover

Full system commissioning, documentation and training. You understand what you have, how it works, and what to expect.

05

Ongoing support

Monitoring, maintenance and warranty management. We remain your energy partner long after installation.

Read the full process

06 / SOUTH AFRICAN CONDITIONS

The resource is here. The engineering has to match it.

South Africa holds one of the strongest solar resources measured anywhere on earth. What differs by province is how much of it a system can actually convert, which is why we size against local irradiance, not a national average.

4.9 6.6 kWh/m²/day

Selected province

Northern Cape

Hover or select a province to compare its solar resource. Marked points are the major load centres we design against.

Irradiance

Specific yield

10 kWp array

Provincial averages from public irradiance data, converted at a performance ratio of 0.80. Site-specific yield is modelled per project.

07 / WHY SA SOLAR

Engineering depth. Honest advice. Long‑term partnership.

We will not win work by undersizing or cutting corners. We win it by doing the job properly, and by being straight with you about what solar can and cannot do for your site.

Read our story Talk to Our Team

  • Decades of combined experience across every sector of the South African energy market
  • In-house engineering: we design what we install
  • Quality-first component selection: not the cheapest option, the right option
  • Honest system sizing: we will not oversell capacity you don't need
  • Full project lifecycle capability, from feasibility through commissioning to aftercare
  • Level 4 B-BBEE certified, proudly South African
  • Full continuity of service for all existing Quest Group and Sage Electrical Systems clients

GET STARTED

Ready to take control of your energy costs?

Whether you need a residential system for your home or a utility-scale solution for your operation, our team has the experience to get it right.

Get Your Free Energy Assessment

BUILT OUT OF SQUARE EDGES

An inverter cannot make a sine wave. It can only switch.

The bridge switches a DC bus fully on or fully off, thousands of times a second. What you see below is that switched waveform, the filter solving it into a sine, and a live Fourier transform of the result. Raise the switching frequency and watch the harmonic sidebands march away from the fundamental.

4.0 kHz
Distortion, measured
Carrier
Carrier ratio
Switching edges

Sine-triangle modulation, one LC output stage integrated at 8× oversampling, 1024-point radix-2 FFT written by hand. Distortion is measured off the spectrum.

PROOF BY LISSAJOUS

Two supplies in step draw a straight line.

Put the grid on one axis of an oscilloscope and the inverter on the other. In step, the trace is a diagonal line. Out of step it opens into an ellipse, and if the frequencies differ at all the whole figure rotates — at exactly the difference between them. The phase angle shown is measured off the figure.

+0.35 Hz
Phase angle
Frequency error
Figure rotation
Status

Phosphor decay and velocity-dependent beam brightness are both modelled, which is why the turning points are brightest.