Determine the capacitor rating in kVAR and also in farad to improve the load pf from 0.70 lagging (i.e., θ₁ = 45.6°) to 0.90 lagging (i.e., θ₂ = 25.8°) at a three-phase, 60-Hz, 460-V distribution point delivering 1500-kW real power. If the motor runs for 300 h per month, the utility demand charge is $10/kVA, energy charge is $0.15/ kWh, capacitor cost is $60/kVAR installed, and cable power loss is 2% per phase, determine the payback period.