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Methodology & Data
Solar Panel Calculator
Quality, Transparency & Accountability

Editorial Standards & Corrections Policy

Last Updated: November 2026 • Version 1.2

Notice: This policy outlines the operating procedures, technical standards, and mathematical verification practices of Solar Panel Calculator (Solar Panel Calculator LLC). All disclaimers and policy texts are subject to regular compliance and legal review.

1. Our Core Editorial Commitment

Solar Panel Calculator was founded on a simple principle: homeowners, clean energy students, electricians, and off-grid builders deserve access to transparent, mathematically sound solar photovoltaic sizing tools without high-pressure contractor sales funnels or hidden affiliate kickbacks. We hold our technical publications, interactive calculation engines, and code compliance summaries to strict standards of scientific integrity and electrical code accuracy.

2. Engineering & Mathematical Verification Workflow

Before any interactive calculator, formula update, or technical guide is deployed on our platform, it undergoes a structured multi-stage verification workflow:

  • Primary Literature Benchmark: Calculation formulas are cross-referenced directly against primary laboratory manuals, specifically the NREL PVWatts v8 Technical Manual and IEC 61724 standards.
  • Code Compliance Verification: Electrical circuits, conductor sizing, and disconnect specifications must strictly align with current NFPA 70 National Electrical Code (NEC Article 690 & 705) standards, including the 156% overcurrent rule (NEC 690.8) and 120% busbar rule (NEC 705.12).
  • Structural & Fire Safety Checks: Physical rooftop calculations incorporate mandatory 36-inch ridge and hip setback pathways mandated by IRC Section R324.6 for firefighter access.
  • Unit Testing & Edge Case Simulation: Client-side algorithms are subjected to automated edge-case validation testing (e.g., negative sun hours, extreme temperature coefficients, oversized DC/AC loading ratios) to prevent runtime calculation errors.

3. Zero-Commercial Influence & Impartiality Policy

To protect user trust, we maintain absolute separation from equipment manufacturers and contractor networks:

No Lead-Selling

We do not capture or sell user telephone numbers, addresses, or project estimates to third-party sales organizations.

No Hardware Sponsorships

We do not accept equipment placement fees or manufacturer sponsorships. Module wattage ratings and inverter sizing guidelines are based solely on engineering physics.

4. AI Transparency & Human Editorial Oversight

We believe in complete transparency regarding the tools used to create digital content:

  • Calculation Engines: All mathematical algorithms, formulas, and client-side logic are designed, written, and verified by software and electrical engineering professionals.
  • Educational Text & Synthesis: While modern computational and language models may be utilized for initial drafting assistance, grammatical structuring, or data indexing, all published technical text is manually reviewed, verified against source documentation, and approved by our engineering editorial team.
  • No Unsupervised Synthetic Publishing: We do not publish automated, unverified programmatic content. Every published page and calculation model is verified before deployment.

5. Corrections & Errata Policy

Photovoltaic technology, building codes, and utility tariff structures evolve rapidly. We welcome corrections, technical feedback, and errata submissions from our community of licensed electricians, solar contractors, and homeowners.

How to Report an Error

If you identify an inaccurate mathematical formulation, an outdated utility tariff benchmark, an amended electrical code citation, or a broken external reference:

  1. Send an email to our engineering team at support@solarpanelcalculator.org with the subject line "Errata Report: [Page URL]".
  2. Include the specific URL, the current text or formula result, the suggested correction, and an authoritative primary citation (e.g., NEC code section, NREL paper, or utility tariff filing).
  3. Our team investigates submitted errata within 24–48 business hours. Verified corrections are updated promptly, with critical mathematical updates noted in our revision logs.

6. Disclaimers & Professional Boundaries

The models and sizing estimates provided on Solar Panel Calculator are engineered strictly for preliminary planning, research, and budgeting purposes. They do not constitute formal architectural, structural, or licensed professional engineering plans. Prior to purchasing equipment or altering electrical service panels, users must retain a licensed electrical contractor and obtain necessary municipal building permits in compliance with local codes.