⚡ Free Tool

Reactive Power Calculator

Calculate Q, apparent power, power factor, kVAR, and line current for solar plant and utility-scale applications. All formulas shown.

⚙ Inputs

Real Power (P)

Target Power Factor (PF)

—

PF Type

Formulas Used

Q = P × tan(arccos(PF)) S = √(P² + Q²) = P / PF PF = P / S = cos(θ) I = S / (√3 × V_LL) [3-phase]

📊 Results

Reactive Power Q
—
MVAR

Power Factor
—
—

Apparent Power S

—

MVA

Angle θ

—

degrees

Line Current @ 38.4 kV

—

Amps (3-phase)

Current vs Unity PF

—

% more current

Phasor Diagram

PF Schedule — Q Required at Common Operating Points

P (MW)	PF Target	Q Required (MVAR)	S (MVA)	Compliance
Enter values above and calculate to see PF schedule.