Commercial Solar FAQs: Thinking about solar for your business? You’re not alone. With rising energy costs and growing pressure to meet sustainability targets, more and more commercial sites are making the switch to solar.

But before you dive in, it’s natural to have questions. At Sundial Solar, we speak with organisations of all sizes — from schools and offices to warehouses and manufacturers — and many of the same questions come up time and again.

Here’s a round-up of the most common commercial solar FAQs we hear, answered clearly and simply.

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1. Is solar right for my business?

If your site has a decent-sized roof or land space with good sun exposure, and you’re using electricity during the day, then the chances are yes. Solar is ideal for offices, schools, warehouses, factories and more.

It’s also a long-term investment — reducing bills, lowering carbon emissions, and future-proofing your energy supply. If not check out our wheeling page to see how we can reduce your bill without sufficient roof space.

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2. How much does a commercial solar system cost?

There’s no one-size-fits-all price. The cost depends on the system size, the type of equipment used, your roof structure, and access.

At Sundial Solar, we provide detailed, transparent quotes — with no hidden extras — so you can see exactly what’s included and understand your return on investment from the start.

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3. What size system do I need?

This depends on your energy usage, available roof space, and future plans (e.g., EV charging, battery storage). A proper site survey and energy analysis is key.

We design systems that fit your energy profile, not just your roof. Load shedding is on a lull so batteries are used as a form of energy arbitrage. This means we charge them up during sunlight hours and deplete them during peak tariff times maximising your savings and your return on investment.

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4. Will solar really save my business money?

Yes — especially if you use a lot of electricity during the day. Solar reduces the amount of electricity you need to buy from the grid, protecting your business from price hikes.

Most commercial systems pay for themselves in 4–7 years and continue generating free electricity for decades.

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5. What kind of maintenance is involved?

Solar PV systems are generally low maintenance, with no moving parts. We recommend annual system checks and occasional panel cleaning to keep things running efficiently. We can take care of this for you.

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6. Will it disrupt business operations during installation?

We keep disruption to a minimum. Our commercial install team works around your schedule and takes health and safety seriously. Most installations are completed within a few days to a few weeks depending on the project size. Also remember we install the components and get everything ready with no interruption to your existing power. It’s only right at the end that we shut down for a brief period to connect the ready made cables to your DB.

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7. What’s included in a Sundial installation?

We don’t believe in hidden extras. Our commercial quotes include:

• High-quality panels and inverters
• Full system design and DNO application
• Monitoring setup
• All electrical works and installation
• Handover documentation and support
• SSEG registration

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8. What’s the next step?

If you’re considering solar for your site, the next step is a no-obligation chat with our team. We’ll discuss your needs, take a look at your energy usage, and provide a clear quote and system design.

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Ready to explore solar for your business?

We’ve delivered trusted installations for schools, offices, industrial buildings and more across South Africa.

Whether you’re looking to cut costs, reduce carbon, or both — we’re here to help.