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← U.S. DOT FY 2026 Phase I Pre-Solicitation Q&A

Is there a real requirement for both bidirectional regen and dissipative load based solutions?

At this scale, it doubles cost. If emergency use only, is resistive based loads more than adequate?

I also want to know if there is a desire to do battery pack diagnostics during the discharge process (bad sub-module or other)?

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  • Melissa Shurland commented  ·   ·  Report

    The is no need for bidirectional regen and dissipative load based solutions. This system is meant for emergency use. Currently on diesel locomotive engines resistant grids are used to dissipate braking energy exhausted as heat. therefore, resistive technology has some foundation in rail.

    Battery pack diagnostics would be a secondary objective, such capability may be desired for when the system is deployed by the railroads in maintenance shops.

U.S. DOT FY 2026 Phase I Pre-Solicitation Q&A: 26-FR1: Mobile High-Power Emergency BESS De-energizer System for Rail Vehicle Propulsion

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