Is solar PPA or outright purchase better financially?

Outright purchase generates 40–100% more value over 25 years vs PPA for homeowners who can use the ITC. PPA is better for those who cannot use tax credits (non-profit entities, low tax liability) or lack upfront capital.

What are typical solar PPA rates?

Solar PPA rates typically start at $0.08–0.15/kWh with 0–3% annual escalator. Compare to current retail rates and project both forward. If grid rates rise faster than PPA escalator, PPA gains value.

What happens at the end of a solar PPA?

At PPA contract end (typically 20–25 years), homeowner can: renew PPA, buy the system at fair market value (usually low after 20 years), or have it removed. Most homeowners purchase or renegotiate.

Solar PPA vs Purchase NPV Comparison Calculator

Compare the net present value (NPV) of solar power purchase agreement (PPA) vs outright purchase. Determine which option maximizes financial return over 20–25 years.

2D stress state at a point. All stresses in MPa.

σx — Normal Stress X (MPa)

σy — Normal Stress Y (MPa)

τxy — Shear Stress (MPa)

⚙ Mechanical Note: Results are based on standard textbook formulas and ISO/AASHTO references. Always verify critical designs with applicable codes (ISO 898, AASHTO 1993, AISC, Eurocode 3) and a qualified engineer.

How to Use

Enter the values for the patient or scenario you are assessing. Compare the net present value (NPV) of solar power purchase agreement (PPA) vs outright purchase. Determine which option maximizes financial return over 20–25 years. Use the solar ppa vs buy result to inform your clinical assessment.

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Solar PPA vs Purchase NPV Comparison Calculator

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Frequently Asked Questions

Is solar PPA or outright purchase better financially?

What are typical solar PPA rates?

What happens at the end of a solar PPA?