Get a Free Assessment
Home Residential Solar Commercial & Industrial Agricultural Energy How It Works About SA Solar Contact Get a Free Energy Assessment

COMMERCIAL & INDUSTRIAL SOLAR

Reduce operating costs. Improve cash flow. Take control of your energy.

Commercial and industrial solar solutions engineered for South African business conditions, designed to deliver measurable financial returns and operational reliability.

Request a Business Energy Assessment See the numbers

01 / THE BUSINESS CASE

Energy is one of your largest controllable costs.

For commercial and industrial operations, Eskom costs affect margins in more than one way, and most of them compound.

01 Compounding tariffs Tariff increases compound annually, eroding profitability.
02 Demand charges Demand charges penalise peak consumption heavily.
03 Load shedding Load shedding disrupts operations, damages equipment and costs productivity.
04 Unpredictability Energy costs are unpredictable, making financial planning harder.

Solar converts energy from an uncontrollable liability into a predictable, reducing cost, and with the right system design, it does so with strong, measurable ROI.

02 / ROI & PAYBACK

Solar as a business investment.

Treated properly, a commercial array is a capital asset with a defined payback and a long tail of return. Sized correctly, commercial systems typically behave like this.

2–5 yrs Typical payback, depending on usage profile and system size
15–25 yrs Returns delivered after payback
Section 12B Tax incentives under the Income Tax Act may apply
Day one Savings where the system is structured through financing, with no capital outlay

Section 12B of the Income Tax Act is referenced here as context only. Your eligibility and treatment are matters for your own tax adviser.

Model the numbers

03 / THE MODEL

We model the financial case before you commit.

We provide detailed financial modelling as part of every commercial proposal, so you can evaluate solar as the capital investment it is. This is the same arithmetic, running live.

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.

04 / WHAT WE DELIVER

Full-spectrum commercial solar capability.

SA Solar handles commercial and industrial projects end to end. One team carries the work from the first load profile through to the monitoring you look at a year later.

We have delivered projects for warehouses, logistics facilities, retail properties, office parks, cold storage, manufacturing, agriculture and mixed-use developments.

Read the full process Talk to our engineers

  • Site assessment and load profiling
  • Engineering design and single-line diagrams
  • Grid integration and utility approvals
  • Structural engineering for roof or ground mount
  • Professional installation by certified electricians
  • Commissioning, monitoring and ongoing support

05 / SECTORS

Who we work with.

Retail & commercial property
Warehousing & logistics
Manufacturing & industrial
Healthcare facilities
Education campuses
Hospitality & tourism
Agricultural operations
Mining & resources
Property developers & sectional title

GET STARTED

Find out what solar can save your business.

Tell us about your operation and we will model the case against your actual tariff structure, load profile and site constraints.

Request a Free Commercial Solar Proposal

WHY A TRACKER STOWS

Above a certain wind, the air stops damping and starts driving.

Push the wind speed up. Watch the phase portrait on the right stop spiralling inward and start spiralling outward — that is the moment aerodynamic damping goes negative and the row begins to gallop. The controller stows on measured amplitude, before it becomes a warranty claim.

17 m/s
Torsion amplitude—
Net damping—
StateStable
Stow threshold9.5°

Torsional inertia 1.9×10³ kg·m², stiffness 4.6×10⁴ N·m/rad, structural damping 2%. Den Hartog criterion. Representative of a 60 m drive line, not of any one product.

THE CURVE THAT NAMES THE FAULT

Every module has one curve. Its shape tells you what is wrong.

Solved live from the single-diode equation by Newton–Raphson at every voltage step. Each fault below perturbs a real physical parameter — series resistance, shunt resistance, a conducting bypass diode — and the deformed curve is what the solver returns, not an illustration.

Fault

1000 W/m²
25°C
Maximum power—
Fill factor—
Open circuit—
Diagnosis—

72 cells in series, ideality 1.2, V_T 25.85 mV. Dashed trace is the healthy module at standard test conditions, for comparison.

ONE CLOUD, THREE ANSWERS

A cloud that ruins one sensor barely moves the plant.

The field above is drawn as isopleths, the way a meteorologist draws it. Below, the same cloud measured three ways: a single pyranometer falling off a cliff, the whole array averaging it away, and what the battery actually delivers to the grid once a ramp-rate limit is applied.

10 %/min
8 m/s
Delivered ramp—
Battery state—
Spatial smoothing—
Compliance—

Band-limited cloud field advected at the set wind speed. Smoothing ratio is measured over the last 30 samples of both traces.

WHERE EVERY WATT GOES

The arrows on most diagrams do not add up. These do.

A hybrid inverter follows a strict order: solar serves the load, surplus charges the battery, only then does anything export, and only what is left is imported. Kirchhoff’s law must close at every node, so this prints the residual of that sum on its own face. Switch to load shedding and watch the reserve become the only thing left.

12:00
14 kW
62%

Grid

Solar now—
Battery—
Grid—
State—

22 kWp array, 40 kWh LFP battery with a state-of-charge dependent power limit. Essential load is 42% of the total.