Legal

Terms of Use

Last updated July 21, 2026

By using this site, you agree to these terms.

Educational purpose

The site provides general educational information, not legal, engineering, environmental, tax, investment, or financial advice. Decisions should rely on current permits, filings, studies, contracts, public records, applicable law, and qualified professionals.

Models and factual claims

Interactive calculators use illustrative assumptions and are not project forecasts. Conditions vary by design, climate, utility territory, operating load, and local agreement. Read each linked source with its date, scope, methods, and limitations.

External sources and services

Links to government agencies, laboratories, utilities, associations, publishers, Stripe, and other third parties are provided for verification and convenience. We do not control their content, availability, security, or policies.

Donations and orders

Payments and donations may be processed by Stripe and are subject to the checkout terms shown there. Questions about an order, charge, delivery, or refund may be sent through our contact page.

Acceptable use and ownership

Use the site only for lawful personal, civic, and educational purposes. Do not disrupt it, attempt unauthorized access, misuse forms, or present content misleadingly. Original site content and design are protected by applicable law; third-party material remains its owner’s property.

No warranty

The site is provided “as is” and “as available.” To the extent permitted by law, we disclaim warranties and liability for decisions, losses, or damages arising from the site, its models, or third-party links.

Changes

We may update these terms at any time. Continued use after an update means you accept the revised terms.