Solar project calculator: income, payback and PPA
The SBC solar calculator compares two models: buying the system, with yearly income, payback and net over the years, and a PPA, where a developer builds the system and you buy its power at a saving without investing. Yields, tariffs and prices are values you enter, and the result is an indication only.
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An indication only, not an offer and not a commitment. Actual terms are set by the lender, based on the full file.
Depends on location, angle and shading. An example value; change it for the project.
As a percent of the investment.
The result
- First year income
- ₪384,000after O&M: ₪363,000
- Payback
- 3.9 yearsInvestment: ₪1,400,000
- Net over the period
- ₪7,120,485Return on investment: 509%
Investment: ₪1,400,000. First year income: ₪384,000. Payback: 3.9 years.
With a purchase you invest in the system and get the income or saving from its power, less O&M. Every price and yield here is an example to change, not an offer.
Purchase: ₪7,120,485. PPA: ₪1,884,476.
How the calculator works
First year production is size times yearly yield per kWp, falling each year by the degradation you enter. It leaves out financing, taxes, insurance and inverter replacement.
Numbers are rounded only on screen, never in the middle of the calculation.
Questions and answers
What is the difference between buying and a PPA?
When you buy, you invest and receive all the income or saving. In a PPA a developer builds and runs the system and you buy its power at an agreed price.