Business Solar Finance in South Africa: Compare Funding Routes

The four main funding routes

These names are not always used consistently. One provider may call an agreement a lease while another calls a similar payment structure rent-to-own. Read the ownership, payment and transfer clauses before classifying it.

Rule options out before comparing prices

Choose cash when ownership and lifetime value lead

Cash purchase can suit a profitable owner-occupier that has capital available, expects to remain at the site and is willing to manage the asset. The business owns the equipment from purchase, keeps the operating savings and can appoint its own maintenance provider.

The opportunity cost is important. Compare the project's return with debt repayment, stock, expansion and other uses of cash. Include operations, maintenance, insurance and future component replacement in the ownership case. The purchase price is not the entire lifecycle cost.

Choose bank or asset finance when ownership matters but liquidity does too

A loan or asset-finance facility spreads the capital cost over a fixed period. It can preserve working capital while giving the business an ownership route, but it adds interest, fees, credit conditions and possible security.

The repayment period should make sense beside the asset life and expected savings. Test whether the business can carry the instalment during months with lower solar production, lower consumption or weaker trading. Do not assume the electricity saving and loan payment will match every month.

Choose a lease or rent-to-own route when the payment and service package fit

Under a lease or rent-to-own arrangement, the provider or funder usually owns the system during the term. The customer makes scheduled payments and may receive ownership after a final payment or transfer process. Maintenance and insurance may be included, but only the agreement can confirm that.

This route deserves close review when the business rents the premises, plans to move, expects to expand or may sell during the term. Confirm relocation, early settlement, default, buy-out, system upgrades and roof reinstatement before comparing the payment with a loan.

Choose a PPA when the business wants energy and transferred performance responsibility

In an onsite PPA, a provider normally funds and owns the plant and charges for the energy delivered. This can protect capital and transfer specified performance and maintenance duties. The customer gives up immediate ownership and signs a long-term energy agreement that may outlast a property lease or planning cycle.

The South African solar PPA guide explains tariff escalation, minimum purchase, metering, performance, roof rights and termination clauses. SolarGuide's current referral route does not publish a PPA product, so confirm that a PPA can be fulfilled before treating it as the preferred option.

Current bank finance examples

The following public terms were checked on 22 September 2026. They show how lender criteria differ. They are not personalised offers or a complete market comparison.

Bank terms, pricing and eligibility can change. Ask for the quoted interest rate, whether it is fixed or linked to prime, all fees, security, settlement terms, insurance requirements and total repayment in writing. Do not present a public maximum as an amount the business will qualify to borrow.

Compare total paid, not the opening instalment

Use a year-by-year schedule for every option. Include:

1. deposit and upfront professional costs;
2. every loan, rental, lease or PPA payment;
3. interest rate or annual escalation and the date it changes;
4. initiation, service, metering and administration fees;
5. maintenance, monitoring, cleaning and call-out costs;
6. insurance and security requirements;
7. inverter, battery or other replacement assumptions;
8. buy-out, balloon or transfer payment;
9. early settlement or termination cost; and
10. the value and condition of the asset at the end.

Why escalation needs its own line

Consider a seven-year payment that starts at R20,000 a month. If it remains flat, the scheduled payments total R1.68 million. If it rises by 5% once a year, they total about R1.95 million, a difference of roughly R274,000.

This is a SolarGuide editorial calculation, not a provider quote. It assumes 84 monthly payments, with each block of 12 payments increasing by 5%. It excludes VAT, deposits, fees, insurance, maintenance, buy-out and the time value of money. Its purpose is to show why a starting payment and a term are not enough.

The commercial solar cost guide provides current purchase and rent-to-own reference prices and explains which installed scope can change the asset cost.

Compare the effective energy cost

A funding proposal should not be judged only against the current electricity bill. Ask for a model that shows:

• expected solar generation by year;
• the portion used on site rather than exported or curtailed;
• the utility energy rate actually avoided in each interval;
• demand, network, capacity and fixed charges that remain;
• degradation, downtime and maintenance assumptions;
• finance payments, escalation and fees; and
• a downside case for lower consumption, lower tariff growth and weaker output.

For an owned system, divide the present value of project costs by the present value of usable solar energy if you want a levelised energy comparison. For a PPA, compare the delivered PPA charge and remaining utility costs with the same load and tariff baseline. Finance teams should select the discount rate and approve the method rather than accepting a provider's headline cost per kWh.

Ownership changes the tax and accounting questions

Section 12B follows qualifying ownership and use

The SARS renewable-energy allowance guide says qualifying photovoltaic assets of 1 MW or less may be deducted at 100% of qualifying cost in the year they are first brought into use for the taxpayer's trade. The taxpayer must meet the ownership, first-use, cost and trade requirements.

The temporary 125% Section 12BA allowance applied only to qualifying assets first brought into use before 1 March 2025. Do not include it in a new 2026 business case.

A cash buyer or qualifying purchaser under an instalment credit agreement may be able to claim Section 12B. A lease, rent-to-own agreement or PPA may leave the allowance with the legal owner. The Section 12B guide explains the current limits. A registered tax practitioner should review the actual agreement and asset schedule.

A lease does not automatically stay off the balance sheet

IFRS 16 generally requires a lessee applying full IFRS to recognise a right-of-use asset and lease liability for leases longer than 12 months, unless the underlying asset is low value. A contract called a PPA or service agreement can also contain a lease depending on the rights it gives the customer.

Accounting depends on the contract and the reporting framework the business uses. Ask the auditor or accountant to classify the arrangement before an internal memo describes it as off-balance-sheet funding or treats every payment as a simple operating expense.

Allocate maintenance, insurance and performance risk

An ownership route can still transfer some duties through an operations and maintenance contract. A service route can still leave important exclusions with the customer. Compare the written allocation, not the route's label.

Prepare a lender-ready and reviewer-ready pack

Business and finance documents

Requirements differ by lender, but current bank pages commonly ask for company registration and signatory documents, recent bank statements, trading history and financial information. Prepare:

• company registration and authorised-signatory documents;
• recent bank statements;
• annual financial statements and current management accounts;
• cash-flow, income-statement and balance-sheet projections where requested;
• the current debt and security position;
• the proposed deposit and preferred term; and
• the internal approval authority for the transaction.

Energy and technical documents

Funders also need confidence that the project can produce the cash flow in the model. Include:

• 12 months of electricity bills and the current tariff schedule;
• interval data where available;
• operating hours, seasonal changes and planned expansion;
• the commercial site and load assessment pack;
• a provider proposal with exact equipment, scope and exclusions;
• roof or land rights, lease consent and site information;
• the expected SSEG or connection path; and
• base, downside and stress cases using the same assumptions.

Contract and approval documents

Finance, technical, tax and legal reviewers should see the same version of the proposal. Give them the payment schedule, ownership clause, maintenance and insurance schedule, performance method, security, early exit, default, transfer and end-of-term outcome.

A shortlisting sequence that keeps the decision honest

1. Confirm the site and load can support a credible project.
2. Compare one common technical scope under each funding route.
3. Remove routes that conflict with property rights, ownership goals or the approval horizon.
4. Model total paid, effective energy cost and downside cash flow.
5. Send the tax, accounting and legal questions to the appropriate qualified reviewers.
6. Ask finalists for a binding schedule of costs, duties and exit outcomes.

SolarGuide is an independent referral partner. It does not lend money or approve tax and accounting treatment. Alumo provides its own assessment, design, finance terms, installation and warranties. The available route remains subject to site assessment, final design and credit approval.

Sources and review note

This guide was checked on 22 September 2026 against the current Standard Bank, FNB and Nedbank product pages linked above, the SARS renewable-energy allowance guide, IFRS 16 and GreenCape's commercial solar finance brief. Bank pages are lender-published product terms. The escalation example is a SolarGuide editorial calculation. Tax, accounting, credit and contract outcomes must be confirmed by the business's qualified advisers using the final agreement.

Frequently asked questions

What is the best way to finance business solar in South Africa?

There is no universal best route. Cash can suit a buyer seeking control and low lifetime cost. Debt or asset finance can suit a buyer that wants ownership without using all available capital. A lease or rent-to-own route can suit a lower initial cash requirement. A PPA can suit a buyer that wants to purchase energy and transfer specified performance duties. Compare all routes on the same technical scope and time period.

Is solar asset finance the same as rent-to-own?

No. Asset finance usually funds the purchase of equipment, with ownership and security set by the credit agreement. Rent-to-own usually leaves ownership with the provider or funder during the rental term and provides a later transfer route. The exact contract controls the outcome.

Can a business claim Section 12B on financed solar?

Potentially, if the taxpayer meets the ownership, first-use, qualifying-cost and trade requirements. SARS also addresses qualifying purchasers under instalment credit agreements. A rental, lease or PPA may place the allowance with the asset owner. Ask a registered tax practitioner to review the agreement before relying on the deduction.

What should a business ask a solar lender?

Ask for the interest basis, all fees, deposit, security, insurance, payment schedule, total repayment, settlement terms and treatment of equipment warranties. Also confirm when the supplier is paid and what happens if the technical scope changes after a site assessment.

Can SolarGuide arrange commercial solar finance?

SolarGuide can route a commercial assessment to Alumo, whose public business offer includes outright and rent-to-own options. SolarGuide is not a lender and does not promise approval or a specific product. Start a business solar finance assessment with the site's bills, operating hours, property status and preferred ownership route ready.