Programs Version and Build numbers

Every ASPEN software program release is assigned a major number and a minor version number. The major version number is incremented between major software releases when major changes in program features, network, and relay models happen. The minor version number is incremented between maintenance software releases, which consists of fixes for software bugs and some new and enhanced program features. As a rule, no new parameters are introduced for any network or relay objects in maintenance releases. As the result, data files created in the different minor version releases of the same major version number are always fully compatible.

ASPEN regularly creates new program builds with fixes for software bugs and makes these updates available to users. Both major and minor version numbers are kept unchanged in these builds. Only the program build number, and the build date, are incremented.

Program version and build number details are displayed in the Help | About this program dialog box.

Software Download

ASPEN software coordinators in users' companies can log in to the ASPEN Software Distribution Portal to download all releases and updates of the programs for which their company has a license.

Contact This email address is being protected from spambots. You need JavaScript enabled to view it. to inquire about or to update your company's coordinators' emails. 

Most Recent Releases

Click on the links below to view What's New documents from the most recent software releases and updates.

ASPEN OneLiner and Breaker Rating Module

OneLiner V15.8: Available March 2024.

OneLiner V15.7: Available February 2023.

OneLiner V15.6: Available July 2022.

OneLiner V15.5: Available December 2021.

OneLiner V15.4: Available September 2021.

OneLiner V15.3: Available July 2021.

OneLiner V14.8: Available February 2020. 

ASPEN Power Flow

Power Flow V15.8: Available March 2024.

Power Flow V15.7: Available February 2023.

Power Flow V15.6: Available July 2022.

Power Flow V15.5: Available December 2021.

Power Flow V15.4: Available September 2021.

Power Flow V14.8: Available February 2020. 

ASPEN DistriView

DistriView V11.4: Available April 2022.

DistriView V11.3: Available February 2020.

DistriView V11.2: Shipped February 2019.

DistriView V10.4: Shipped September 2017. 

ASPEN Relay Database

Relay Database V12.2: Shipped January 2023.

Relay Database V11.5: Shipped October 2021.

Relay Database V11.4: Shipped July 2020.

Relay Database V11.3: Shipped March 2017.

Relay Database V11.2: Shipped May 2016. 

ASPEN Line Database

Line Database V3.2: Available October 2023.

Line Database V2.8: Available September 2021.

Line Database V2.7: Available March 2017.

Line Database V2.6: Available September 2015. 

ASPEN Line Constants

Line Constants V3.5: Available November 2013.