Energy Weapons / Tanks
Max Weapons, minimum Shields, then 45 Engines and 40 Auxiliary.
W 100S 15E 45A 40
Interactive systems guide
Power Level Lab
Click or drag anywhere on a bar to move power in five-point steps. The total stays at 200—just like adjusting your ship’s target power in Star Trek Online.
Target power allocation
BalancedPC power tray
Power Level Presets
Balanced Preset
Torps / Sci-EPG / Support
Minimum Weapons and Shields, max Auxiliary, with the remaining power in Engines.
W 15S 15E 70A 100
What the default presets do
These are the game’s quick starting points. They are useful while leveling, but specialized builds usually benefit from a custom allocation.
Attack
100 / 50 / 25 / 25Prioritizes energy weapon damage while retaining moderate shield power.
Defense
25 / 100 / 25 / 50Prioritizes shield regeneration and survivability, with moderate Auxiliary.
Speed
25 / 25 / 100 / 50Prioritizes flight speed and turn performance, with moderate Auxiliary.
Balanced
50 / 50 / 50 / 50Splits all 200 points evenly. Safe for learning, but rarely ideal for a finished build.
Where each point goes
Select any subsystem above for a live explanation and example.
WeaponsEnergy weapon damage and firing-cycle power headroom.
ShieldsShield regeneration and power-based damage resistance.
EnginesFlight speed, turn performance, and defense from movement.
AuxiliaryMany science, control, drain, healing, stealth, and perception effects.
Mechanics simulator
Power Above 125
See the crucial difference between stored overcap and a genuinely raised subsystem maximum. Overcap is a reserve that can replace drained Weapon Power; it is not free damage above the active cap.
Available Weapon Power
Set total available power from the normal 125 cap through 300. Values snap to five.
125 normal cap300
Weapon multiplier: 0.5 + (0.005 × current Weapon Power). Current power is limited by the active maximum; reserve overcap only replaces power lost to drain.
Live comparison
The same entered value produces different results depending on whether the cap itself was raised.
Stored reserve0Power waiting above the 125 active cap.
Reserve-only multiplier1.125×No direct gain above 125.
If max cap is raised1.125×100% of the 125-power result.
Extra drain covered0.0Equivalent 10-power weapon costs before reductions.
Reserve onlyRaised maximum
How to read this
- Overcap reserve: power above the active maximum is hidden headroom. It can refill Weapon Power as firing costs pull the displayed level down.
- Raised maximum: when an effect explicitly raises maximum subsystem power, current power above 125 can continue to feed the Weapon Power damage multiplier.
- The 300 ceiling is an experimentation range, not a claim that ordinary builds can sustain a 300 active maximum.
8 Beam Arrays · Fire at Will
EPS & Weapon Power
Model recovery and firing drain over a fixed five-second window. Use the sliders or type exact values; every firing event is shown below.
Simulation inputs
Eight arrays fire in a staggered sequence. The standard overlap model treats one weapon as the baseline and models seven net 10-power overlaps per cycle.
125 · no reserve300
01000
0%500%
0% · default rate1000%
Cost reduction: 10 ÷ (1 + total reduction). EPS recovery: 5 × (1 + EPS ÷ 100) power/second. Haste: cycle time ÷ (1 + haste ÷ 100).
FAW power result
A transparent sequencing model using the verified formulas below.
EPS recovery10.0/sPower restored toward 125 each second.
Cost per paid array10.00After modern cost reduction scaling.
FAW cycle5.00s1.00× default firing rate.
Average firing power——
Minimum power—Lowest level reached during the five-second window.
Recovery margin—EPS recovery minus average paid drain/second.
Power at 5.00 seconds——
Weapon Power over 5 secondsDots mark power-cost events
Every array event
0 array events over 5.00s| Event | Time | Before | Cost | After |
|---|
Verified mechanics & model boundary
- FAW is modeled as a five-second base cycle. Haste shortens that cycle with the standard division formula, so +100% haste is 2× firing rate—not an instant or zero-length cycle.
- Cost reduction is multiplicative through the modern diminishing formula. For example, 100% reduction stat halves a 10-power cost to 5; it does not make it free.
- The graph always covers exactly five seconds. Each cycle starts with the baseline array at no net overlapping cost, then staggers seven net costs through FAW’s active firing window. The table records array power-cost events—not every visual FAW beam pulse—because the documented power cost is per firing cycle.
- FAW is known to produce slightly higher per-shot drain in testing, but no current public source publishes a stable extra coefficient. The calculator therefore uses the verified 10-power base-cycle cost and labels the result as a transparent model, not a combat-parser replacement.
- In-game activation queueing, mixed weapons, server timing, traits, firing-mode rank, and temporary max-power effects can change an individual parse.
Cross-checked against STO BETTER’s current Energy Basics, its linked advanced power mechanics guide, STO Wiki power mechanics, and the r/stobuilds mechanics index.
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