import type { VfdSavingsInput, VfdSavingsResult } from './types.js';
/**
 * Calculate VFD (Variable Frequency Drive) energy savings
 *
 * Affinity Laws for centrifugal loads (pumps, fans):
 * - Flow is proportional to Speed
 * - Pressure is proportional to Speed squared
 * - Power is proportional to Speed cubed
 *
 * Formula: Savings = kW * hours * rate * (1 - (new_speed/full_speed)^3)
 *
 * @param input - VFD savings input parameters
 * @returns VFD savings result with power reduction, costs, and CO2 savings
 */
export declare function vfdSavings(input: VfdSavingsInput): VfdSavingsResult;
//# sourceMappingURL=vfdSavings.d.ts.map