Kilotest: Diagnoses of cell headers ambiguous? violation by HTML element 0 on Institute for Progress US Energy Data Electricity Demand page

Basics

About the page

• URL: https://usenergydata.org/electricity-demand/
• Tested 3 days ago on 2026-10-07 at 21:52 by job 261007T2132-e35
• Summary of results:
  • Rule engines:
    • Called: 12
    • Were able to test: 11
    • Reported any rule violations: 10
  • Violations: 1524
  • Violators: 204
  • Issues: 40
• Download the full technical report (JSON)

About the issue

• Why it matters: User may be unable to get help on relationships in a table
• Priority: low
• Related WCAG standard: 1.3.1
• Reported by 1 rule engine (QualWeb)
• Violations: 3
• Violators: 1

About the violator

• Tag name: HTML
• Text: [not applicable]
• Start tag: <html lang="en">
• XPath: /html
• Bounding box: x = 0, y = 0, width = 1920, height = 7801
• Reported by QualWeb

Diagnoses

Here is how rule engines diagnose the cell headers ambiguous? issue for HTML element 0 of the Institute for Progress US Energy Data Electricity Demand page.

1. [failed] This table is a layout table with id or headers attributes.

   Rule engine: QualWeb (University of Lisbon)

   Rule: QW-WCAG-T14

2. [failed] This table is a layout table with id or headers attributes.

   Rule engine: QualWeb (University of Lisbon)

   Rule: QW-WCAG-T14

3. [failed] This table is a layout table with id or headers attributes.

   Rule engine: QualWeb (University of Lisbon)

   Rule: QW-WCAG-T14