Certified accuracy against international standards. CIE 171:2006 & ASHRAE 140-2011 validated.
Daylighting Accuracy
Energy Calculations
DL-Light has been thoroughly validated against the CIE 171:2006 standard, "Test Cases to Assess the Accuracy of Lighting Computer Programs." This internationally recognized standard defines a series of tests and reference results for validating lighting simulation software.
Published by the International Commission on Illumination, this standard helps users and developers assess accuracy of lighting programs and identify weaknesses. It uses a comprehensive approach with:
Download our comprehensive validation report showing detailed test results and comparisons.
Download Report (PDF)DL-Light's Watt module, which simulates solar irradiation on building surfaces, has been validated using the ANSI/ASHRAE 140-2011 procedure. This standard ensures accuracy for energy calculations and thermal analysis.
This standard defines procedures for validating whole-building energy simulation programs. We used this methodology to compare DL-Light's Watt calculations against leading building energy software.
Download our energy calculation validation report with detailed comparisons to other software.
Download Report (PDF)Advanced daylighting analysis for certification compliance
Comprehensive daylight factor calculations
European daylighting standards with multiple methods
German daylight planning requirements
UK legal daylight requirements
UAE sustainability certification support
Validation against international standards provides confidence to architects, engineers, and certifiers that results are accurate and defensible.
Meet requirements for LEED, BREEAM, EN 17037, and other certification programs with validated calculation methods.
Ensure your building analysis is accurate from the design phase through final certification and occupancy.
Each new version undergoes validation testing, ensuring you always have the most accurate calculations available.