Welcome to GADS Open Source™ Support!
GADS/OS Data Entry, GADS/OS Analysis & Reporting, and GADS/OS Wind™ give generating companies
tools to take control of their mandatory GADS reporting to NERC and the various
GADS/OS is a set of free and open source software tools and is licensed under the
GNU General Public License Version 2 (GNU GPL or simply GPL) which is the most widely
used free software license.
GADS/OS is in use at the New York ISO and a wide range of generating companies, both domestically and
internationally, from single-plant sites to larger generating companies with hundreds of generating units.
The user interface is available in both English and Spanish. (GADS/OS Wind™ is currently only available in English.)
Using the most current industry-standard Microsoft® Visual Basic.NET, ASP.NET, and
C# languages and software development tools with the corporate standard database
management systems of Microsoft Access, Microsoft SQL Server™ 2012/2014/2016/2017,
and Oracle Database 11g/12c/18c/19c enables our software to provide reliable and scalable
solutions regardless of current or future operating systems—including both the 32-bit
and the 64-bit Windows operating systems.
With more than 30 years of GADS data reporting experience, this expertise ensures
that you are getting the best GADS software tools available anywhere.
GADS 2021 Winter Event Reporting
In February 2021, the central United States experienced extended periods of record low temperatures creating conditions which resulted in power outages across multiple states. In the interest of being able to identify generator events that were a direct result of the low temperatures, NERC and the GADS User Group (GADSUG) are requesting that entities use specific reporting guidelines.
Click on implementation details for more information.
- GADS/OS Data Entry
NERC developed the GADS Data Reporting Instructions to assist utility personnel in reporting information to the
Generating Availability Data System (GADS). The GADS Data Reporting Instructions detail
the data elements collected by GADS, data identified by the industry as being vital to the understanding and
interpretation of generating unit and major equipment performance. By following the strict guidelines set
forth in these instructions, we have found that the industry analysts can best apply the data in the most beneficial manner.
GADS/OS Data Entry allows you to collect and report validated GADS performance data
and event data (including outage, derating, non-curtailing, and reserve shutdown
events plus special synchronous condensing and pumping operation event types) in
standard formats required by NERC GADS and all major ISOs.
GADS data is collected for all major generating unit components—such as the boiler,
nuclear reactor, heat recovery steam generator (HRSG), combustion turbine/jet engine,
steam turbine, and generator—and other plant systems, subsystems, and components.
User tutorial: GADS/OS 101 Data Entry Reporting
- GADS/OS Analysis & Reporting
GADS/OS Analysis & Reporting allows you to calculate industry-standard performance
measures for reliability, availability, and maintainability (RAM) assessments and
key performance indicators (KPIs) using the GADS data for your generating units
as the basis for those calculations.
Measures of generating unit performance — such as Availability Factor (AF), Equivalent
Availability Factor (EAF), Forced Outage Rate (FOR), Equivalent Forced Outage Rate
(EFOR), and Starting Reliability — have been defined, recorded, and utilized by
the electric power industry for more than 50 years. The statistics can be calculated
with and without OMC events from granularities as fine as hourly and daily to as
coarse as yearly or longer.
In addition to more than 47 standard built-in reports, you can also add user-created reports
built with SAP's Crystal Reports to the Analysis & Reporting reports list and
run them from within the Program. Exporting to Excel is built into the Program and
is always available to create simple, as well as easy, ad hoc reports.
Analysis & Reporting not only calculates these important standard measures,
but also includes measures such as the Equivalent Demand Forced Outage Rate (EFORd)
used in UCAP/ICAP calculations that have been developed to respond to the deregulated
capacity and energy markets.
EFORd - Equivalent Demand Forced Outage Rate (EFORd) was added to IEEE Standard
762 in 2006. However, this equation has been used by the PJM Interconnection and
the Canadian Electricity Association (CEA) for many years. It is not used by all
ISO organizations as a measure of reliability and dependability. NERC GADS started
calculating this number about 10 years ago and it was added to our software and
other reports at that time. NERC GADS follows the IEEE 762 formula for calculating
- GADS/OS Wind™ - Data Entry / Analysis & Reporting
GADS/OS Wind™ allows you to collect, analyze and report validated data as specified in the GADS Wind Turbine Generation (GADS‐W) ‐ Data Reporting Instructions (DRI) Version 2.0 (Revision Date: 10/30/2017 - Effective Date: 01/01/2018).
The NERC DRI was developed to assist plant personnel in reporting information to NERC’s GADS Wind Reporting application.
The instructions detail the procedures, schedule, and format to follow when reporting data. Our GADS/OS Wind software complies with the latest requirements.
If you have existing software to collect GADS wind data, now is the time to ensure that it complies with DRI Version 2.0 (Revision: 10/30/2017 - Effective: 01/01/2018).
In GADS/OS Wind™, three types of data are reported in GADS:
- Sub-Group Data – Initial and whenever there is a change.
- Performance Data – At the Sub-Group Level
- Component Data – Optional, at the Sub-Group Level
GADS/OS is installed as a Windows-client application on individual
user machines, on a virtual machine/desktop, or on a network (shared) drive.
You can learn more about GADS by downloading the GADS Data Reporting Instructions (conventional generation) and the GADS Wind Turbine Generation Data Reporting Instructions at NERC. A video is also available entitled: "Introduction to GADS" (4m 11s) by NERC on Vimeo.
The Site may contain links to and from third party web sites for your convenience.
All trademarks used or referred to in this website are the property of their respective
|Copyright © 2017 Engineering Data Technologies. All rights reserved.
This code is licensed under the GNU General Public License Version 2.