ETAP

ETAP
Name	ETAP
Developer	Schneider Electric (originally Operation Technology, Inc.)
Initial release	1986
Latest release	2025
Programming language	C++, .NET
Operating system	Microsoft Windows
Genre	Electrical power system analysis, simulation
License	Commercial

ETAP ETAP is a commercial electrical power system analysis and design software suite used for modeling, simulation, control, protection, and optimization of electrical power systems. It integrates steady-state and dynamic analysis capabilities to support planning, operation, and asset management for utilities, industrial plants, data centers, and commercial facilities. The software is developed by Operation Technology, Inc., now part of Schneider Electric, and is widely adopted by engineering firms, utilities, and consultants.

Overview

ETAP provides tools for load flow, short-circuit analysis, transient stability, harmonic analysis, motor starting, arc flash, protection coordination, relay settings, and real-time monitoring and control. It interoperates with common engineering standards and formats and interfaces with devices and systems from vendors such as Schneider Electric, Siemens, ABB, General Electric, and Eaton. ETAP supports integration with supervisory control and data acquisition systems like OSIsoft PI System and distribution management platforms used by organizations including National Grid plc and Exelon Corporation. The suite is tailored to comply with standards such as IEEE 1547, NFPA 70E, IEEE Std 141, and IEC 61850.

History and Development

ETAP originated in the mid-1980s, created by Operation Technology, Inc., founded by engineers with backgrounds in power systems analysis and industrial automation. Throughout the 1990s it expanded capabilities for transient analysis and protection coordination, incorporating algorithms influenced by work from institutions such as Electric Power Research Institute and universities like Georgia Institute of Technology and University of Illinois Urbana-Champaign. In the 2000s ETAP added graphical one-line editors and integration features to interface with CAD platforms from Autodesk and asset management systems from IBM. Following the acquisition of Operation Technology, Inc. by Schneider Electric interests and partnerships expanded, enabling cloud-enabled modules and collaborations with data center operators like Digital Realty and Equinix. Continuous releases have introduced model-based real-time simulation inspired by research from National Renewable Energy Laboratory and protection modeling techniques used by IEEE working groups.

Features and Capabilities

ETAP’s modules encompass load flow (power flow), short-circuit, protective device coordination, relay setting calculation, transient stability, harmonic analysis, motor acceleration, arc flash hazard calculation, and cable ampacity. It provides real-time monitoring and supervisory features for energy management systems comparable to offerings from SIEMENS Energy, ABB Grid Automation, and Schneider Electric EcoStruxure. ETAP implements protection models used by manufacturers such as SEL (Schweitzer Engineering Laboratories), GE Grid Solutions, and Eaton Cutler-Hammer. The software supports scripting and automation using languages and frameworks related to Microsoft Visual Studio and .NET, and exchange of data with formats like IEC 61850 SCL and DNP3 protocol connectors. It includes capabilities for resiliency analysis referencing standards such as NERC guidelines and consequence modeling approaches used by US Department of Energy studies.

Applications and Industries

ETAP is applied across utilities, petrochemical complexes, oil and gas installations, mining operations, manufacturing plants, healthcare campuses, educational institutions, and data centers. Utilities such as Pacific Gas and Electric Company and industrial operators like Shell plc and BP have used similar power system analysis tools for planning distribution and transmission networks. In mining and metals sectors companies like Rio Tinto and BHP rely on electrical modeling for mine electrification projects, while data center operators including Google and Microsoft employ power system simulation for resilience planning. ETAP supports renewable integration studies relevant to developers like NextEra Energy and offshore platforms associated with TotalEnergies. It is used for compliance and safety assessments in facilities subject to regulatory frameworks involving agencies like Occupational Safety and Health Administration and standards bodies such as IEEE Standards Association.

Licensing and Versions

ETAP is distributed under commercial licensing models offering node-locked, floating, and enterprise server licenses, and provides modular licensing per functional package (e.g., transient stability, distribution, generation). Variants include on-premises desktop editions and enterprise solutions with real-time and SCADA interfaces; cloud-enabled subscriptions have been introduced for collaboration and model sharing. Licensing arrangements are comparable to commercial software offerings from vendors like Bentley Systems, AVEVA, and Siemens PLM Software, and often involve maintenance and support contracts tailored for asset-heavy customers such as National Grid plc and multinational engineering firms like Bechtel.

Reception and Criticism

ETAP is widely regarded for the breadth of its analysis modules, graphical one-line representation, and integration capabilities; industry endorsements include usage by major utilities, engineering consultancies, and academic programs at institutions such as Massachusetts Institute of Technology and Stanford University for research and training. Criticisms include the high cost of commercial licenses relative to open-source alternatives like projects influenced by MATPOWER and interoperability challenges when translating complex models between proprietary formats and standards used by IEC working groups. Some users have reported a steep learning curve compared with domain-specific tools from Siemens PTI and DIgSILENT PowerFactory, and concerns about vendor lock-in common to enterprise engineering software ecosystems employed by firms such as Schneider Electric and ABB.

Category:Electrical engineering software