Release Notes

Latest features, improvements, and bug fixes. See what's new in DL-Light.

⬇ Free Evaluation Buy a License →

No time limit on evaluation

Version History

Complete changelog of all DL-Light versions. Click any version to expand and see full details.

DL-Light v16.0.32

5th January 2026
▼

New Features

  • Add the possibility to choose Watt or KW for Average calculation in module Watt

Improvements

  • Modification of precision display for the palette in module Watt

DL-Light v16.0.25

24th November 2025
▼

Improvements

  • Installation for SketchUp 2026
  • MacOs version for Mx Silicon processors only

Bug Fixes

  • Fix on cache calculation when previous calculation was unsuccessful
  • Fix on the manual dates input

DL-Light v16.0.20

05 March 2025
▼

Improvements

  • Installation for SketchUp 2025

DL-Light v16.0.18

21st January 2025
▼

Bug Fixes

  • Fix management of tag folders

DL-Light v16.0.10

13th December 2024
▼

Improvements

  • LUX: added a link to the raw data (survey) in the report window

Bug Fixes

  • APSH: fix of the display bug in the report window

DL-Light v16.0.8

17th November 2024
▼

New Features

  • New extension: daylight illuminance (Lux)

Improvements

  • Significantly improved calculation time for Watt and WRF extensions
  • Update of internal modules (weather, comparator)

DL-Light v15.0.22

21st August 2024
▼

Bug Fixes

  • Fix a bug that could block plugins from starting (Ruby 3.2)

DL-Light v15.0.21

18th August 2024
▼

Improvements

  • DA EN17037/uk: add median and decile 95% in reports
  • DF EN17037/uk: add median and decile 95% in reports
  • SkyViewFactor: add a report for cumulative result of all areas
  • Technical update (Python libraries)

Bug Fixes

  • Fix a minor bug related to ruby versions

DL-Light v15.0.15

17th March 2024
▼

Improvements

  • Support of SketchUp 2024
  • Refactoring

Bug Fixes

  • Bug fix on snapshots with palette

DL-Light v15.0.11

1st February 2024
▼

New Features

  • New extension: daylight autonomy according to standard EN17037
  • New extension: daylight autonomy according to standard EN17037/UK

Improvements

  • Technical update (Python version)

DL-Light v14.0.75

2nd October 2023
▼

Improvements

  • Reorganization of backend and Radiance files

Bug Fixes

  • Fix exclusion border display on textures
  • VSC plugin bug fix

DL-Light v14.0.66

23rd August 2023
▼

Improvements

  • Add free period choice for APSH
  • SunExposure: add report/comparator to single moment calculation

Bug Fixes

  • SDA: fix message for "Undefined timezone"
  • Fix a cache issue with sDA/ASE

DL-Light v14.0.60

15 July 2023
▼

Improvements

  • New Radiance engine (5.3)

Bug Fixes

  • Fix a display bug on the location for Daylight Factor plugins

DL-Light v14.0.57

31 March 2023
▼

Improvements

  • virtual surfaces have a different group name than source
  • improve preferences file export and import

DL-Light v14.0.54

12 March 2023
▼

Bug Fixes

  • Fixed export for nested invisible tags
  • Fixed materials export for surfaces without tag (Layer0)
  • Fixed crash when Windows version is not available

DL-Light v14.0.50

5th February 2023
▼

Improvements

  • Compatibility SketchUp 2023
  • A surface without a tag (Layer0) is now associated with the tag of the first tagged upper group
  • Translation of old terms 'Layer0' to 'Untagged' in reports
  • Fixed virtual surface creation in groups or instances

DL-Light v14.0.44

11th January 2023
▼

New Features

  • An option allows to display in reports the angle to the north and the orientation of the faces
  • An option allows to display in reports the name of the group's instance
  • Sunexposure, watt: user definition of complex occupancy period via .toml files
  • DF EN17037 and DF EN17037/UK: addition of custom location and illuminance

Bug Fixes

  • Fixed a bug that could cause previous calculation results to be retained

DL-Light v14.0.37

6th September 2022
▼

Improvements

  • Sunexposure: possibility to set the minimum threshold of the solar altitude (compatible EN17037)
  • Missing material warning for surfaces can be disabled

DL-Light v14.0.36

6th September 2022
▼

New Features

  • New extension: DF EN17037 with UK adjustments

Improvements

  • Improved handling of materials with dependencies
  • Limitation of the number of sensors for a surface (adjustable)

DL-Light v14.0.25

11th May 2022
▼

New Features

  • New feature: virtual copy for all surfaces of a tag

Improvements

  • Materials: management of ".cal" files in the "radiance_extra" folder
  • DF EN17037: precision increased to 2 decimals (as for the classic DF)
  • Optimization of material images loading
  • Minor GUI improvements

Bug Fixes

  • Fix issue of .skp files modified without extension activation

DL-Light v14.0.12

14th February 2022
▼

Improvements

  • compatibility for MacOS 10.14+ and SketchUp 2022

DL-Light v14.0.11

8th February 2022
▼

Improvements

  • DL-Light ready for SketchUp 2022 on Windows

Bug Fixes

  • Bug fix on the WRF module where wrong values were displayed in tooltips

DL-Light v14.0.4

30th December 2021
▼

New Features

  • New extension: Estidama (United Arab Emirates standard)
  • Last version compatible with older MacOS <= 10.14

Improvements

  • Functionality: optional display of the sensor exclusion band (edge limit of sensors)

DL-Light v12.0.65

9th November 2021
▼

Improvements

  • Mostadam: addition of missing documentation
  • Mostadam: optimization of Radiance settings
  • Watt: in mode without inter-reflection, removal of the warning of missing materials
  • Windows: fixed an error if more than 60 threads are used

DL-Light v12.0.63

6th October 2021
▼

New Features

  • New plugin: Mostadam Rating System (Saudi Arabia standard)

Improvements

  • Detection of a zero duration of the custom occupation period
  • Adaptation of terminology layer/tag in user interface
  • Internal optimizations and minor bug fixes

Bug Fixes

  • Fix of some paths of help files
  • Fix some network error for SU2017

DL-Light v12.0.50

30th July 2021
▼

Improvements

  • Lock of layers for rendering
  • Direct export of reports to spreadsheets (generation of .ods files)
  • Add Spectral DB material library (https://spectraldb.com)
  • DF EN17037: "foot-candle" option for compatibility with the Well standard
  • DF EN17037: display of the distance between the model and the weather file
  • Materials: display of a temporary image during the calculation of a material
  • Internal optimizations and minor bug fixes

DL-Light v12.0.8

18th January 2021
▼

Bug Fixes

  • correction of detection of number of cores for SketchUp 2021

DL-Light v12.0.7

14th January 2021
▼

New Features

  • update for SketchUp 2021

Improvements

  • display more statistics in BREEAM reports
  • addition of a directory for authentication keys

Bug Fixes

  • fix units display for the total option of the Watt extension
  • fix a display bug on the "space types" window

DL-Light v12.0.2

16th December 2020
▼

New Features

  • new extension: sDA/ASE (LEED credits, LM83 materials, comparisons)

Improvements

  • Daylight Factor EN17037: improvement for horizontal openings
  • improvement on toolbars, now configurable
  • better usability of the 1-click selection tool
  • added parameter -as by default for DA, Watt and WRF
  • improved messages (Daylight Factor EN17037, Watt)
  • new mecanism for license management (per extension validation, installation quotas)
  • specific executables for windows 8, windows 10 and windows serveur
  • optimised startup time for extensions in specific situations
  • internal optimisations

Bug Fixes

  • fix on possible confilcts with other extensions from other editors
  • fix on no visible layers exported to Radiance
  • fix a bug in extension sunexposure for shadows
  • fix a bug in extension sunexposure for precise moment
  • fix a bug preventing ground albedo to be 0

DL-Light v11.0.9

6th July 2020
▼

Bug Fixes

  • Fix export in case of hidden objects on Layer0 inside visible components

DL-Light v11.0.8

15th May 2020
▼

Improvements

  • Materials: model library can now be exported
  • New mouse cursor for "show values" tool

Bug Fixes

  • Fix extensions display for unregistered users

DL-Light v11.0.5

15th May 2020
▼

Improvements

  • Add a "Clear" button on the license window
  • Administration menu moved to global parameters
  • Average column displayed in Sun Exposure reports
  • Sun Exposure extension: additional reports per days and per hours
  • Internal optimizations

Bug Fixes

  • Fix a bug blocking the opening of the APSH plugin without license
  • Fix a bug of textures missing on virtual layers

DL-Light v11.0.0

30 April 2020
▼

New Features

  • New extension: Daylight Factor for standard EN 17037
  • New extension: Horizontal Sight Angle for standard EN 17037

Improvements

  • DF BREEAM and DA BREEAM calculation: 0.5m border now optional
  • APSH: addition of the angle of the surface relative to the south
  • "Show only calculated areas" display: removal of shading
  • Transparency of layers: better restoration of the initial state
  • Graphics improvement (textures, reports, reports icon)
  • Virtual surfaces _dl_XXX_group renamed to _dl_XXX_sensors_results
  • Improvement of the model update message following a new version
  • Internal optimizations and minor bug fixes

DL-Light v10.0.12

15 April 2020
▼

Improvements

  • Improvement of reports
  • Add the indicator WPSH/APSH for BRE calculation

Bug Fixes

  • Bug fix for retrieval of archives in APSH

DL-Light v10.0.8

25 March 2020
▼

Bug Fixes

  • Bug fix for the calculation of SunExposure single moment

DL-Light v10.0.7

19 March 2020
▼

Bug Fixes

  • Bug fix for the calculation of Daylight Autonomy in the special case of LEED V2 Option 4

DL-Light v10.0.6

1st March 2020
▼

Improvements

  • Better integration of Sky constraints in Sky Factor

DL-Light v10.0.1

20th February 2020
▼

Improvements

  • Installer for SketchUp 2020

DL-Light v10.0.0

1st February 2020
▼

New Features

  • New extension: Sky Factor and Rights of Light
  • New extension: Horizontal Sight Angle (EN 17037 compliant)

Improvements

  • New functionality in toolbars: Transparency of layers
  • New functionality in toolbars: Show only false colors
  • Explicit error message for SketchUp layers with empty names
  • Better detection of wrong timezone in sunexposure plugin
  • Option in preferences for displaying extensions in menu
  • Internal optimizations and minor bug fixes

DL-Light v9.2.0

▼

Improvements

  • Improvement of the No SKy Line module using a compound engine
  • Add function for Sunexposure to calculate shadows instead of direct sun
  • Improved integration of auxiliary files for materials (.cal; .xml, .pic)

Bug Fixes

  • Fix on transparency max for transparent materials
  • Removed a rare bug on Mac for encoding
  • Fix an overflow error (for plugins DA, Watt, WRF) for extremely large illuminance values

DL-Light v9.1.0

▼

New Features

  • Extension "No-sky Line" is now available in DL-Light

Improvements

  • New version manager (list of changes in the new version)
  • Detailed message when opening a model containing results from older DL-Light versions
  • Rename "Archive" and "Load" buttons to "Save archive" and "Load archive"

Bug Fixes

  • Windows version only: fix initial display bug for preferences and palette
  • Fix wrong "watt" label in Daylight autonomy palette
  • Fix display of palette choice when only custom palette is allowed (DA and DF BREEAM, SEPP65)
  • Minor bug fixes

DL-Light v9.0.9

▼

New Features

  • VSC (Vertical Sky Component) is now introduced in DL-Light
  • APSH and WPSH (Annual and Winter Probable Sun Hours) are now introduced in DL-Light

Improvements

  • Improved cleaning features
  • Various interface improvements (report window, material manager)
  • Minor bug fixes

DL-Light v8.0.84

▼

Bug Fixes

  • Fix for a bug in making snapshots with palette

DL-Light v8.0.83

▼

Improvements

  • Option to use "Watt per square foot" unit (Watt and WRF plugins)
  • Improved layout for the attach material tab (Watt, WRF, DA, DF plugins)
  • Improved layout for space type dialog, DA BREEAM report, DF BREEAM report

Bug Fixes

  • Fix a crash when no surface to calculate has valid sensors
  • Fix Watt computation for custom periods
  • Minor fixes

DL-Light v8.0.76

▼

Bug Fixes

  • Bug fix on the report for SunExposure Total calculation

DL-Light v8.0.66 Major release

▼

New Features

  • New module: Watt Reduction Factor

Improvements

  • Improved translations, minor bug fixes

DL-Light v8.0.52 Major release

▼

Improvements

  • There is now a result comparator included in DL-Light
  • Includes total in Watt reports
  • Improved selection of surfaces from reports (highlight or classical selection)

Bug Fixes

  • Bug fixes

DL-Light v8.0.34

▼

Improvements

  • Possibility to archive and reload simulation results
  • Installation as dmg instead of pkg for MacOs
  • Improvement on the algorithms to calculate very small surfaces

DL-Light v8.0.21

▼

Improvements

  • Support of the North orientation changes (for example via the plugin Solar North)

DL-Light v8.0.19

▼

New Features

  • Version compatible with SketchUp 2019

Bug Fixes

  • Bug fix on snapshots
  • Bug fix on virtual surfaces

DL-Light v8.0.18 Major release

▼

New Features

  • Introduction of possibility to calculate complex non-adjacent calculation periods

Improvements

  • Addition of a sound when a long calcualtion is finished
  • In the Watt module, display or Watt or KiloWatt
  • Definition of a simple Admin menu

DL-Light v8.0.6 Major release

▼

Improvements

  • Introduction of a cache system to accelerate calculation
  • Elimination of the "Render selection", "Update all", "Update textures, the software now detects to necessary calculation
  • Improvement of the sensors grid system
  • Possibility to attach different grids of sensors to different surfaces
  • Improvement on the custom periods of calculation per full days, per hours intervals and per start/end daters

Bug Fixes

  • Correction of a bug during modification of Daylight Factor calculation for VSC calculation

DL-Light v7.0.58

▼

Improvements

  • Improvement on the management of "original" textures (SketchUp textures) and their restoration

Bug Fixes

  • Bux fix on specific calculation for Winter season

DL-Light v7.0.52

▼

Improvements

  • Adding meridian information to ensure the validity of results as SketchUp handles is only from a geometric point of view
  • Using a new widget for the selection of custom time periods
  • Technical refactoring of some parts for future module addition
  • Small bug fixes

DL-Light v7.0.40

▼

Improvements

  • Adding surface average results within Watt module report

DL-Light v7.0.39

▼

Bug Fixes

  • Bug fix on a rare occurence for textures

DL-Light v7.0.38

▼

Improvements

  • Improvement on DF and DA report columns

Bug Fixes

  • Important Bug fix in the Watt module on the calculation of the maximum of insolation on a point

DL-Light v7.0.24

▼

Improvements

  • Improved management of internal referentials for faces inside groups
  • Various improvements on the management of faces' id
  • Added controls for duplicate faces

Bug Fixes

  • Bug fix on Sunexposure where clear sky is set before calculation

DL-Light v7.0.20

▼

Bug Fixes

  • Bug fix on crash for trial version

DL-Light v7.0.18

▼

Improvements

  • Improved virtual surfaces
  • Improved management of quasi-planar surfaces (but not so planar in fact)...
  • Modified authentication for complex cases
  • Bug fixes

DL-Light v7.0.8

▼

Bug Fixes

  • Bug fix on reports for somes cases of surfaces

DL-Light v7.0.7

▼

Bug Fixes

  • Bug fix on report tables

DL-Light v7.0.6 Major release

▼

New Features

  • SEPP65 Australian Daylight indicator included in DL-Light

Improvements

  • New version of Radiance included
  • Improvements on the generation of sensors
  • Improved interface
  • Improved management of huge number of sensors
  • Better preferences management
  • Various bug fixes

DL-Light v6.0.32

▼

Bug Fixes

  • Bug fix on screenshots with palette

DL-Light v6.0.27

▼

Improvements

  • No more Dos box when calculation are launched

DL-Light v6.0.26

▼

Bug Fixes

  • Bug fix on the display of transmission coefficient of transparent materials

DL-Light v6.0.23

▼

Improvements

  • Full coherence with the Mac version
  • New interface
  • New preference management
  • New false colour management

Bug Fixes

  • Bug fixes

DL-Light v6.0.13

▼

Improvements

  • Autonomy calculation and Breeam support
  • Improved false color textures
  • New interface
  • New preferences management
  • Improved speed
  • Major internal refactoring

Bug Fixes

  • Bux fixes

DL-Light v6.0.12

▼

Improvements

  • Support of SketchUp 2018

DL-Light v6.0.10

▼

New Features

  • New Instant module for fast simulations in luminance and illuminance

Improvements

  • Improvement on night day hours management for occupation profiles in autonomy calculation
  • Improveme,t of export programs for very complex surfaces

DL-Light v5.1.51

▼

Improvements

  • Remember dialog size and position where dialog are reopened
  • New daylight factor functionality: specify different surfaces types (Default surfaces type and specific ones)
  • Various fixes (correction on the support of Hebrew characters, ...)

DL-Light v5.1.45

▼

Improvements

  • Report improvements

DL-Light v5.1.44

▼

New Features

  • Calculation of the Daylight Factor
  • Support of SketchUp 2018

Improvements

  • Improved false colour imaging system
  • Improved preferences management

DL-Light v5.1.25

▼

Improvements

  • Improved help files, few bug fixes

DL-Light v5.1.21

▼

Bug Fixes

  • Includes a fix for preference window

DL-Light v5.1.16

▼

New Features

  • The macOS version is back!

Improvements

  • It includes exposure to direct sunrays, sky view factor and the new Watt module
  • Daylight Factor, Luminous autonomy and BREEAM calculation will be added as soon as possible

DL-Light v5.0.15

▼

Improvements

  • Improved management of large SketchUp files (hundreds of layers, etc.)

DL-Light v5.0.14

▼

Improvements

  • Windows version now includes the watt module to calculate the energy arriving on the outside faces
  • New simpler interface for all modules

DL-Light v4.2.7

▼

Bug Fixes

  • Bug fix regarding Push/Pull tool
  • Quick patch to take into account South hemisphere season definition

DL-Light v4.2.3

▼

Improvements

  • Support of SketchUp 2017

System Requirements

Windows

  • Windows 10 or 11
  • SketchUp 2017 or newer
  • 4GB RAM minimum

Mac

  • macOS 10.15 or newer
  • SketchUp 2017 or newer
  • 4GB RAM minimum
  • Intel or Apple Silicon