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Review of Case Materials
Reviews records, documents, testimony, data, and other relevant materials and consults with counsel regarding technical issues related to the matter.
Provide Expert Analysis
Applies specialized knowledge and experience to evaluate the technical or professional issues involved.
Form Expert Opinions
Develops independent, supportable opinions based on the available evidence and relevant standards.
Prepare Expert Reports
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A Power Distribution Expert Witness can examine how electricity moved through substations, feeders, transformers, switches, protective devices, and service equipment during the period in dispute. Relevant evidence may include one-line diagrams, SCADA records, switching orders, relay or recloser events, loading data, voltage measurements, outage-management records, inspection findings, and maintenance history. EIA describes local distribution systems as the portion of the grid that uses substations, transformers, and lower-voltage power lines to deliver electricity to homes and businesses.
Voltage at a customer or piece of equipment can be affected by feeder loading, conductor impedance, transformer configuration, regulator settings, capacitor operation, reactive-power conditions, distributed resources, and the location of the load on the circuit. An expert can compare measurements and operating records with system configuration to determine whether a reported undervoltage, overvoltage, or fluctuation is consistent with distribution-system conditions. IEEE 3001.3-2024 addresses voltage identification and control principles for industrial and commercial power systems, while IEEE 1885-2022 addresses distribution volt-var control and its effects on voltage profiles, reactive power, losses, and system performance.
The sequence may be reconstructed from relay targets, breaker and recloser operations, fault indicators, SCADA events, switching records, equipment condition, customer outage patterns, and the locations of damaged conductors or components. Protective-device operation can help determine which portion of a feeder experienced the abnormal condition and whether the system isolated it as intended. IEEE 2748-2023 addresses fault diagnosis and protection in smart distribution systems, including fault location, isolation, and service restoration, and covers phase, ground, and broken-conductor faults within its stated scope.
Electrical Engineering, +4
Utilities
Utilities, +3
Prepares clear, well-supported expert reports outlining methodology, analysis, findings, and opinions.
Provide Deposition Testimony
Explains findings and opinions under oath and responds to questioning during deposition testimony.
Testify in Court
Presents specialized findings and opinions clearly to judges, juries, arbitrators, or other decision-makers.
Reliability records can help establish how often customers lost service, how long interruptions lasted, whether an event affected an individual circuit or a wider area, and how restoration proceeded. An expert may examine outage histories together with feeder configuration, weather, vegetation, equipment failures, switching actions, and restoration records rather than attributing an interruption to a cause based only on its duration. Common utility reliability metrics include SAIDI, which measures average annual interruption duration, and SAIFI, which measures average interruption frequency. EIA currently publishes state-level distribution reliability data using IEEE-based SAIDI, SAIFI, and CAIDI metrics.
