Use this solar carport payback period calculator to estimate simple capital recovery time for a solar carport array. Enter project-specific assumptions to see the main estimate and supporting figures. The result is intended for early planning and scenario comparison; final design should use site measurements, equipment data, hourly demand, applicable incentives, and professional engineering or financial review.
The main result translates the entered assumptions into a screening estimate for parking-canopy generation. Compare scenarios by changing one assumption at a time.
This planning estimate excludes detailed hourly simulation, site constraints, equipment-specific performance, financing, taxes, and regulations unless explicitly entered.
For a $1,500,000 project, $200,000 incentive, 2,200,000 kWh at $0.09/kWh, and $25,000 annual operating cost: $1,300,000 ÷ $173,000 = 7.51 years.
The result is most sensitive to the energy, capacity, efficiency, load, or cost variables used directly in the displayed formula. Test realistic low and high cases.
Yes. Replace the default assumptions with values covering the same period and consistent energy and power units.
Only through the annual output, irradiation, sun-hour, efficiency, or yield input. It does not model hourly or monthly variation.
No. Keep electricity in kWh and kW, and useful heat in kWhth and kWth. Convert all inputs to a consistent basis first.
No. Use it for screening and comparisons, then verify the project with site, equipment, structural, interconnection, storage, and financial analysis as applicable.
| Item | Use |
|---|---|
| Energy | Use kWh for electricity or kWhth for useful heat. |
| Power | Use kW for electricity or kWth for useful heat. |
| Percentages | Enter percentages as displayed values, such as 80 for 80%. |