Facts and factors if you are considering SOLAR as alternative to ESKOM
Base on a 100kVA 3-phase supply.
To find your exact break-even point, your current monthly electricity consumption is the most critical variable. Because you are completely dropping your Eskom supply, you instantly save your fixed Landrate fees (~R7,643 per month) plus whatever you were paying for your usage (variable energy charges).
Assuming the South African prime lending rate remains at 10.50%, your loan interest rate at prime + 1% will be 11.50%.
Below is a precise financial model tracking how long it takes for a R2,000,000 loan to pay itself off, factoring in a 11.50% interest rate and a 12.5% annual Eskom tariff escalation, assuming you divert 100% of your former Eskom monthly budget directly into paying down the loan.
📉 Break-Even Timeline by Monthly Bill Size
| If your current monthly Eskom bill is… | Your Year 1 annual savings are… | Time until the loan is fully paid off (Break-Even) |
| R15,000 / month | R180,000 / year | ~11.7 years |
| R25,000 / month | R300,000 / year | ~7.1 years |
| R35,000 / month | R420,000 / year | ~5.1 years |
| R50,000 / month | R600,000 / year | ~3.6 years |
🔍 Key Financial Insights for Your Decision
- The Tipping Point (R25k+): If your current monthly bill is R25,000 or higher, the investment hits the sweet spot. A break-even of under 7 years is highly lucrative for commercial agricultural assets. Because Eskom’s tariffs compound at 12.5%, your savings grow aggressively every 12 months, radically cutting down the interest tail on your R2m loan.
- The Danger Zone (Under R20k): If your monthly usage is very low and your bill hovers closer to R15,000, the R2,000,000 loan will accrue interest faster than your initial Eskom savings can clear it in the first few years. It will take nearly 12 years just to break even, which exceeds standard battery replacement cycles.
- The Section 12B Tax Boost: As an agricultural business, you can likely claim the Section 12B / 12BA tax incentive. This allows you to deduct up to 125% of the solar investment cost from your taxable income in Year 1. On a R2m system, this can yield a massive cash-back or tax reduction of up to R540,000 (assuming a 27% company tax rate) in your first financial year, which would immediately knock your break-even period down by 1 to 2 years across all scenarios.