Utilities guide
Solar Payback Estimate Guide
Estimate solar payback and long-horizon savings with incentive, rate growth, and maintenance assumptions.
Quick answer: Solar payback depends on net installed cost, offset production, local tariff rules, and how long you stay.
Intent: solar panel payback calculator
How to run the numbers
- Enter system cost and incentive percentage.
- Input annual kWh offset and current electric rate assumptions.
- Review payback and horizon savings with conservative maintenance assumptions.
Common mistakes
- Production and export-credit policies vary by utility and regulation.
- Ignoring degradation and maintenance can overstate long-term savings.
- Assuming constant occupancy horizon can misalign investment timing.
Calculators to open now
Open primary calculatorPrimary
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FAQs
Does this include battery economics?
No. Battery dispatch and time-of-use arbitrage need separate modeling.
Are incentives guaranteed?
Incentive availability and rules can change; verify current local and federal program details.
Should I model utility rate increases?
Yes. Long-horizon savings are sensitive to future utility price assumptions.
This calculator provides planning estimates for educational purposes only. Verify all assumptions with licensed professionals before making financial, legal, tax, insurance, or construction decisions.
Want a sequence instead of a single tool? Open Start Here: Lowering Bills.