Terms of use
Planning tools, not final designs.
By using EnergySystemSizer, you agree to use the website as an informational and preliminary-planning resource and to independently verify decisions that could affect money, safety, compliance, or equipment.
No professional or procurement advice
Outputs are estimates based on the inputs and assumptions shown. They are not engineering certification, investment or financial advice, a vendor guarantee, a quotation, a permit, a utility approval, or a substitute for site-specific work by qualified professionals.
Your responsibility
Before relying on a result, verify input data, tariff and incentive rules, equipment specifications, degradation, temperature performance, cable and protection design, interconnection requirements, structural limits, fire and electrical codes, and supplier warranties as relevant to your project.
Availability and accuracy
The website is provided on an “as available” basis. Reasonable effort is made to explain formulas and limitations, but no warranty is made that the site will be uninterrupted, error-free, complete, current, or suitable for a particular project.
Acceptable use
You may use the calculators for lawful personal, educational, and professional preliminary analysis. You must not attempt to disrupt the site, introduce malicious code, misrepresent outputs as certified designs, or use the website in a way that violates applicable law or another party's rights.
External links and advertising
External references and advertisements are provided for context or site support. Their presence is not an endorsement. Third-party sites and services have their own terms, privacy practices, availability, and content.
Changes
Calculations, assumptions, pages, and these terms may be revised. Material technical changes should be reflected in the methodology and the page's published update date.