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Power Triangle Calculator



Find the kVAR or MVAR Needed to Improve Power Factor


Find the MVARs needed to achieve a power factor of 99.8% .
The transformer rating is 650 MVA.

Active Power =


Reactive Power Needed = plus or minus


Calculated VAR support needed to achieve the target power factor (If your input is VA) or
kVAR support needed to achieve the target power factor (if your input is kVA) or
MVAR support needed to achieve the target power factor (if your input is MVA)


Easy to use: Click the white input box then enter new number. Or click the clear button then enter new number. Please remember if your input is in VA, then reactive power is in VAR
If your input is in kVA, then reactive power is in kVAR
If your input is in MVA, then reactive power is in MVAR.

Step 1. Click the clear button

Then enter VA or kVA or MVA . Next go to Step 2 enter desired power factor. Finally select button Solve, Q.

Given VA or kVA or MVA

Step 2. Enter desired power factor in percent, do not enter the percent symbol


Desired Power factor in ( % ) = %

To do scenario analysis, simply raise the target power factor and solve for the needed VAR or kVAR or MVAR support.

Angle Theta θ = °


Real work application of power triangle : Volt-Var Regulation


Formula Recall

S2 = P2 + Q2 ; Using Pythagorean Theorem



Your browser does not support the canvas element. Power Triangle,
angle shown not scale Mostly Capacitive Load P = 648.7 MW 41.09 MVAR Q - Capacitive Load S = 650 MVA 3.62 degree
Your browser does not support the canvas element. Power Triangle,
angle shown not scale P = 648.7 MW Mostly Inductive Load - 41.09 MVAR Q - Inductive Load S = 650 MVA - 3.62 degree


Link to Parallel RLC circuit



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