Commercial Solar Finance in South Africa: A Practical Guide

For a commercial site, the case for solar is usually clear: lower energy costs and protection from load shedding and tariff hikes. The harder question is how to pay for it without tying up a large amount of capital. That is what commercial solar finance solves.

This guide is a practical walk-through for installers and EPCs funding commercial deals in South Africa: the structures, the tax, what lenders want, and how to move a deal from quote to first payment.

What is commercial solar finance?

Commercial solar finance is the funding that lets a business install a solar system, and related equipment, without paying the full cost upfront. Instead of a single capital outlay, the cost is spread through a finance structure.

It applies to more than panels. A commercial deal can finance solar PV, batteries, power quality equipment, generators and water equipment. The point is to fund the equipment, not general business costs, and to match the repayment to the value the system delivers.

ArkFlow packages these deals and routes them to lenders, so a commercial client applies once and reaches several possible funders. The background on that process is in how solar finance origination works.

Which finance structure suits a commercial deal?

The structure depends on whether the business wants to own the system and how it wants to treat the cost. The three main options are:

• Asset Finance (3 to 7 years): the business owns the asset and can claim Section 12B. Best where there is taxable income and a long-term hold.
• Rent-to-Own (5 to 15 years): lower monthly cost with ownership at the end. Good for predictable budgeting.
• PPA (10 to 20 years): the business buys the power, not the system, with no upfront capex. Suited to larger sites that want savings without owning assets.

Each is compared in full in solar finance structures compared. For larger sites the choice often comes down to a PPA versus Rent-to-Own, covered in PPA vs Rent-to-Own.

How does tax change the commercial case?

Tax is often the difference between a good deal and a great one. Where the business owns the asset under Asset Finance, Section 12B(h) allows an accelerated, often 100%, deduction on the qualifying renewable asset.

On top of that, a financed commercial deal can stack:

• Interest on the finance as a tax shield.
• O&M costs as a deductible expense.
• I-REC (carbon) income as an additional revenue stream.

Together these improve the after-tax return. The detail, and the ownership condition that drives it, is in Section 12B: the solar tax deduction. This is general information, not tax advice, and the client should confirm their position with a tax adviser.

What do lenders want to see on a commercial deal?

Lenders are funding a business and an asset, so they look at both. In broad terms they want a creditworthy client, a sensible system sized to the site, and clean supporting documents.

A commercial application generally moves faster when:

• The client's financials and KYC documents are ready up front.
• The system is sized to actual consumption, not oversold.
• The equipment is fundable, meaning solar PV, batteries, power quality, generators or water.

The full checklist of what banks assess is in what banks look for in solar finance. ArkFlow prequalifies and KYC-checks the deal before packaging it for the bank, so weak applications are caught early.

How does a commercial deal get funded, step by step?

The flow is the same as any ArkFlow deal, applied to a commercial client:

1. The installer presents an indicative proposal and the client accepts it.
2. ArkFlow onboards the installer with the relevant lenders.
3. The client completes a guided, step-by-step finance application.
4. The deal is prequalified, KYC-checked and packaged for the bank.
5. Offers come through, the client selects one, a contract is drafted, and the first milestone payment is released.

A commercial deal can be routed to the client's own bank, the installer's own lenders, or the ArkFlow lender network. The major SA banks that can sit behind these routes include FNB, Absa, Standard Bank, Nedbank, Investec and Capitec.

What does it cost the installer?

ArkFlow's owner account is free forever, with no card required. The platform adds 1% of capex to the bill of quantities where a deal funds through its lender panel. It is billed in milestones as the bank releases funds, for example 80/20 or 60/30/10, invoiced pro-rata at each release. The mechanics are in the 1% success fee explained.

Every client-facing page carries the installer's brand at no extra cost, as covered in white-label solar finance.

Ready to fund a commercial deal? Sign up free and start with an indicative proposal.

Frequently asked questions

What can be financed in a commercial solar deal?

ArkFlow finances the equipment: solar PV, batteries, power quality equipment, generators and water equipment. It funds the equipment rather than general business costs, with repayment matched to the value the system delivers.

Can a business install solar with no upfront capex?

Yes. A PPA lets a business pay for the electricity the system produces over 10 to 20 years with no upfront capex and no asset to manage. Rent-to-Own spreads cost over 5 to 15 years with ownership at the end. Asset Finance involves ownership from day one.

Does the business get a tax benefit on commercial solar?

Where the business owns the asset under Asset Finance, Section 12B(h) allows an accelerated, often 100%, deduction on the qualifying renewable asset, alongside interest and O&M tax shields and I-REC income. This is general information, not tax advice.

Which banks fund commercial solar in South Africa?

A commercial deal can be routed to the client's own bank, the installer's own lenders, or the ArkFlow lender network. Banks that can sit behind these routes include FNB, Absa, Standard Bank, Nedbank, Investec and Capitec. The lender does the formal underwriting.