OATI webSAS^TM
OATI webSAS is a web-enabled system designed and implemented to provide power marketers, control area operators, reliability authorities and transmission providers within WECC with an automated Unscheduled Flow Assessment tool. Path Operator subscribers to the webSAS system can initiate and manage USF procedures. Other subscribers can acknowledge USF curtailments and mitigate operating security violations on certified paths. Subscribers to the webSAS system can utilize the program to assist them in meeting WECC's USF reduction requirements and to avoid possible RMS sanctions.

OATI webCM^TM
OATI webCM^TM(formerly OATI Congestion Management) is an integrated, web-enabled system designed and implemented to provide power marketers and control area operators with current network conditions in the Eastern Interconnection to determine active TLR conditions, energy transfer impacts on NERC flowgates, energy hub transfer availability, and constrained transmission paths. OATI webCM™ is fully integrated with OATI webTag™, and OATI OASIS webSweep™ to facilitate the creation of energy deals, market re-dispatch transactions, and tags.

The NERC IDC Service:
The Interchange Distribution Calculator (IDC) is an integrated system designed to assist the Reliability Coordinators in managing congestion in the interconnected grid, and coordinating congestion relief procedures across Markets, Reliability Coordinators and Control Areas. The NERC IDC uses a 40,000-bus model of the Eastern Interconnection with over 6,500 generators, 150 control areas and market zones, and 1,500 flowgates. Every 20 minutes, the NERC IDC computes Control Area Transfer Distribution Factors (TDF), Load Transfer Distribution Factors (LDF) and individual Generator Shift Factors (GSF) using the most up-to-date set of transmission and generator outages. These sensitivity factors, together with the control area loads, interchange transactions represented by E-Tags and market contributions, are used in identifying a coordinated relief response towards a congested flowgate that includes control areas relief responsibility through re-dispatch and/or load curtailment, transaction (E-Tag) curtailments and market re-dispatch options, as described on the NERC Policy 9 Transmission Loading Relief (TLR) procedures.

The NERC IDC is a service provided by OATI to NERC since 1999, hosted and maintained by OATI at the OATI Data Center.

OATI FIST^TM and LMP Simulator
OATI FIST^TM (Flow Impact Study Toolset) FIST is an integrated, web-based service designed to allow market participants to forecast in advance the Locational Marginal Price (LMP) values and potential flow impacts of transmission reservations and interchange transactions on modeled flowgates. NERC and OATI collaborated to develop the initial FIST to study the flow impacts of transactions. This second generation FIST, developed by OATI in accordance with the agreement with NERC, adds new features for the development of market participant pricing strategies, in addition to providing flow predictions. By integrating LMP simulation and flow impact study capability, FIST helps users better understand today's markets in transition to standard market design. FIST presents LMP simulation results and flow summary information in both graphical and tabular formats.