Solar Loans in South Africa: Financing Options, Interest Rates and What a System Costs
Solar remains one of the most popular home upgrades in South Africa, and banks are responding with dedicated finance. Standard Bank reported R4.7 billion in green-aligned home financing in 2025, covering solar installations and energy-efficient upgrades. With the prime rate now at 10.75%, the interest rate on your solar loan matters, so it pays to compare. The table below summarises the main options, and you can compare NCR-registered lenders on saloansonline.co.za.
| Option | Loan Amount | Terms and Interest | Notes |
|---|---|---|---|
| Standard Bank Solar Loan | R3,000 to R300,000 for households | Launched at prime +1% up to prime +2.5%, over up to 60 months. At today’s prime of 10.75% that is roughly 11.75% to 13.25%. | Covers the system and installation, is open to non-account holders, and funds can be paid the same day if approved |
| WesBank residential solar finance | R65,000 to R500,000 | Depends on your affordability and credit score | The supplier must meet the bank’s criteria, and certification is required after installation |
| Other bank solar and home-improvement loans | Varies by lender | Comparison guides report prime +1% to prime +3% for solar loans, with terms of up to 7 years at some banks | Some home improvement loans and bond top-ups can also cover solar. Confirm current rates with each bank. |
What does a system cost?
| Item | Estimated Cost |
|---|---|
| Hybrid system with battery (5 kW inverter plus 5 to 10 kWh battery) | About R150,000 to R220,000 |
| Battery storage on its own | About R45,000 to R115,000, depending on capacity |
Cost figures are estimates from industry guides, so get several quotes. The 25% solar tax rebate (up to R15,000) applied only to panels first brought into use between 1 March 2023 and 29 February 2024, so check whether any current incentive applies before you budget for one. Homeowners also need a Certificate of Compliance. This article is for information only and is not financial advice.
Sources
- Solar Loan (Standard Bank)
- Standard Bank solar demand and Solar Loan terms (IT-Online)
- WesBank introduces residential solar finance (Green Building Africa)
- Standard Bank green-aligned home financing (Daily Investor)
- Solar decision guide (OurPower)
- Solar panels South Africa 2026 costs (Volt Flow)
- How does the solar rebate work? (SARS)