2021 Conference Deferred

2021 remains uncertain. Therefore we have decided to defer our next conference to 2022. Many of you will recall we surveyed the group in early 2021 regarding the future of our meetings.

  • 70% of respondents voted AGAINST a web-based meeting
  • 63% of respondents voted AGAINST an in-person meeting in Sep or Oct 2021
  • June received the most votes as the desired month for future meetings at 20.4%. Aug and Sep tied for second with 16.3% desirability. Note, users could select multiple months, hence the low percentages.

We have re-opened negotiations with the Ritz-Carlton St. Louis for our 2022 meeting the first full week of June following Memorial Day. Since Siemens has withdrawn from being a major contributor to the agenda, we will decrease the overall duration by one (1) day. Dates will be 06-09Jun22. We have some exciting ideas for breaking out of the routine. User meetings clearly have fallen into generally the same agenda. We want to try something new and different. If it works well, we will continue. If it doesn't, we will re-group.

Stay tuned for more communication regarding 2022!

Gabe & Barry

501D5-D5A Combustion Turbine Users

Welcome to the 501D5-D5A Combustion Turbine Users Website. This website is developed for the members of the 501D5-D5A Users. If you own and/or operate a 501D5 or D5A combustion turbine, you may be eligible for membership. You must be a member to have a username and password, and you must have a username and password to gain access to secure areas of the website. If you are not a member or do not have a username, you may request one below.

This website will likely always be under construction, so we will gladly accept any feedback for suggestions, improvements, additions, and/or modifications. Feel free to send comments:



With a username & password you are able to start a new topic, respond to an existing discussion, or search the conversation database.



Information about past and future conferences and meetings.


Unit & Users Database

With a username & password you are able to search users and units with various sorting capabilities. You also have the ability to export data in .csv format.



Information about vendors who provide products and/or services for the 501D5 and D5A combustion turbine fleets and/or who support the 501D5-D5A Users.


Vendor Affiliation Database

For vendors and suppliers of products and/or services for the 501D5 and D5A combustion turbine fleets. We use this database to contact vendors about upcoming meetings and other announcements. If your company provides products and/or service for this fleet, please take a moment to review and update your company's data.



With a username & password you are able to access and download files.


About Us

About our History, our By Laws, and our Officers & Directors.