Terms of Service & Disclaimers

1. Educational & Preliminary Sizing Purpose Only

All calculations, mathematical estimations, equipment sizing outputs, and financial projections provided by SolarPanelCalculator.org are engineered solely for preliminary planning, academic research, and budgeting purposes. Real-world solar photovoltaic output varies significantly based on hyper-local weather patterns, micro-shading from trees or chimneys, exact panel pitch, compass azimuth, equipment degradation, and utility tariff structures.

2. No Licensed Professional Engineering Guarantee

While our sizing algorithms conform to recognized engineering standards (including NREL PVWatts v8 and IEC 61724), nothing contained on this website constitutes a formal structural, architectural, or electrical design. All solar photovoltaic, energy storage, and electrical service panel modifications must be engineered, reviewed, permitted, and signed off by a licensed Professional Engineer (PE) and installed by a certified electrical contractor in accordance with local municipal building and electrical codes.

3. Structural & Electrical Safety Responsibilities

Users are solely responsible for verifying that their building structures can safely bear added dead load and wind uplift from rooftop solar arrays. Prior to mounting solar panels or batteries, you must confirm:

• Structural Roof Integrity: Roof rafters, trusses, and sheathing must be inspected to ensure compliance with local dead and snow load limits (typically 2.8 to 4.0 lbs/sq ft for solar racking).
• Electrical Service Panel Headroom: Main electrical panels must be audited to ensure busbar ratings comply with the National Electrical Code 120% rule (NEC 705.12) to prevent hazardous busbar overloading.
• Fire Code Setbacks: Rooftop layouts must strictly respect International Residential Code (IRC Section R324.6) 36-inch perimeter and ridge pathway clearances for firefighter ventilation access.

4. Financial, Tax Credit & Utility Tariff Disclaimers

Calculations regarding the 30% Federal Clean Energy Tax Credit (IRS Section 25D), state clean energy rebates, Solar Renewable Energy Certificates (SRECs), and net energy metering (NEM 2.0 vs NEM 3.0) are for estimation only. Tax eligibility depends on your individual tax liability, property status, and filing circumstances. SolarPanelCalculator.org does not provide professional tax, accounting, or legal advice. Consult a Certified Public Accountant (CPA) or tax attorney regarding tax incentive eligibility.

5. Intellectual Property & Permitted Use

All custom algorithms, client-side calculation engines, interactive UI components, technical diagrams, and written guides on SolarPanelCalculator.org are the intellectual property of Solar Panel Calculator LLC. You may freely use our calculators for personal and preliminary commercial planning. You may not scrape, clone, reverse-engineer, or reproduce our proprietary codebases or content for commercial redistribution without written consent.

6. Limitation of Liability

In no event shall Solar Panel Calculator LLC, its developers, authors, or affiliates be liable for any direct, indirect, incidental, consequential, or punitive damages arising from the use of, or inability to use, the calculators, data, or documentation provided on this website. All tools and information are provided "as is" without warranty of any kind, either express or implied.