import type { PfCorrectionInput, PfCorrectionResult } from './types.js';
/**
 * Calculate power factor correction requirements and savings
 *
 * Formula: kVAR required = kW * (tan(arccos(PF_current)) - tan(arccos(PF_target)))
 *
 * Where:
 * - kVA = kW / PF (apparent power)
 * - tan(arccos(PF)) gives the reactive power factor
 *
 * @param input - Power factor correction input parameters
 * @returns Power factor correction result with kVAR, costs, and savings
 */
export declare function pfCorrection(input: PfCorrectionInput): PfCorrectionResult;
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