Honkai: Star Rail Trailblaze Power Guide

The One-Paragraph Answer

Trailblaze Power regenerates 1 per 6 minutes, caps at 240, and refills from empty in exactly 24 hours — a clean 240 per day. The twist Genshin players keep missing: overflow past 240 is not lost, it trickles into a Reserve pool at 1 per 18 minutes, up to 2,400.

Where the Power Goes

Calyxes (the golden and crimson ones you actually care about) cost 10 per run pre-60 and 40 in the late-game tiers; boss fights 30-60; the Echo of War weekly 30. The classic daily pattern is one full bar of crimson Calyx runs plus a boss or two — but event double-drops change the math, which is exactly when the Trailblaze Power calculator earns its keep: pool your Power before the event, then dump it during.

Reserve Power: The Slow Overflow Pool

Once the main bar is full, regeneration diverts to the Reserve at one-third speed — 1 per 18 minutes instead of 1 per 6. Filling the whole 2,400 takes 30 days of a perpetually-full main bar, so think of it as a double-drop event war chest, not a second income. Reserve Power can only be used to top you up beyond the 240 cap, and it does so instantly — perfect for an event day when 240 is simply not enough.

Fuel and Catch-Up Mechanics

Fuel items (battle pass, events, the shop) instantly grant 60 Trailblaze Power each with no cap on how many you hold or use — the true bankable resource. Veterans stockpile Fuel between events for the same reason the Reserve exists: concentrated spending during double-drops beats daily dribble. The equilibrium catch-up system for lapsed players adds another refund layer on top.

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