"Standard" 20 SEU powerclip

Standard Energy Units (SEU) are a standardized unit of measurement in the Frontier commonly used for power supplies.[1] They measure the output of a Power Generator, and the capacity of power packs and batteries.[2]

Prior to the introduction of the Credit, SEU were used in many places as a form of universal currency. They still are used as a trade commodity in remote places where other forms of banking are not available[3]. They are valued at 5 credits each.

SEUs are generally stored in multi-capacitor, single-use (i.e. non-rechargeable) devices such as Powerclips, mini-powerclips and power discs, or in rechargeable active-matrix devices such as Power Beltpacks, Power Backpacks and Parabatteries.


  1. Star Frontiers Alpha Dawn
  2. For purposes of basic reference, 1 SEU has been calculated to be the equivalent of approximately 1,000 joules (1 kJ).
  3. Zebulon's Guide to Frontier Space pp.63
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