Time-of-Use Electricity Cost Calculator (Peak, Shoulder, Off-Peak)
Calculate time-of-use electricity cost from peak, shoulder, and off-peak kWh, each period rate, and a fixed charge.
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Power factor, reactive power, kWh use, time-of-use cost, fuel cost, and energy savings calculations.
Published Calculators
Solar Energy Cost Calculator
Estimate lifetime energy, total cost, and cost per kWh from system cost, annual output, O&M cost, and project lifetime.
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Reactive Energy Calculator
Estimate kvarh, kVAh, and phase angle from entered real energy and power factor for preliminary power-factor review.
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Power Triangle Angle Calculator
Estimate power factor, reactive-power magnitude, and power-triangle angle from known kW and kVA values, with leading or lagging sign left to external review.
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Power Factor Penalty Calculator
Estimate current and threshold apparent power, excess kVA, and the resulting rate-based charge from entered power-factor and billing assumptions.
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Power From Energy And Time Calculator
Convert watt-hours and elapsed hours into average power in watts and kilowatts without implying peak demand or equipment rating.
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Peak Demand Calculator
Estimate diversified peak demand and compare it with entered service capacity for preliminary load review.
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Operating Cost Comparison Calculator
Compare existing and proposed annual operating costs, annual savings, cost difference, and simple payback from entered energy, rates, fixed costs, and project cost.
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Energy From Power And Time Calculator
Calculate electrical energy in watt-hours and kilowatt-hours by multiplying constant power by elapsed time.
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Energy Intensity Calculator
Calculate energy and cost intensity from annual electricity use, served floor area, and energy rate for a building-level screening view.
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Energy Cost per Device Calculator
Calculate per-device energy and cost from device watts, quantity, runtime, operating days, and energy rate, with total annual cost for the repeated load.
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Demand Charge Cost Calculator
Calculate monthly and selected-period demand charge cost from billing demand, demand rate, and billed months.
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Carbon Emissions from Electricity Calculator
Calculate electricity-related CO2e in pounds, short tons, and metric tons from measured energy use and an entered emissions factor.
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Battery Energy Cost Calculator
Calculate usable energy, charging energy, annual delivered energy, and cycling cost from battery capacity, efficiency, cycles, and energy rate.
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Annual Equipment Energy Calculator
Calculate daily and annual energy, annual cost, and average power from equipment wattage and operating schedule.
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Power Dissipation Calculator
Enter voltage, current, and operating hours to calculate ideal electrical power and energy. Treat the result as a screening estimate, not a thermal design approval.
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Monthly Electricity Bill Calculator
Models a monthly electric bill from kWh, energy rate, demand charge, fixed charge, and taxes while keeping tariff-specific adjustments outside the result.
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Load Factor Calculator
Converts period energy, period hours, and peak demand into average demand, load factor, and peak-to-average ratio while leaving demand windows and tariff rules outside the result.
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Generator Fuel Cost Calculator
Projects generator fuel use, total fuel expense, and hourly operating cost from entered burn rate, runtime, and fuel price.
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Energy Savings Payback Calculator
Estimates simple energy-project payback from annual kWh savings, electricity rate, and project cost, without modeling financing, rebates, or escalation.
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AC Circuit Power Calculator
Resolves apparent, real, and reactive power for a single-phase or balanced three-phase AC load from RMS voltage, RMS current, power factor, and phase model.
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Reactive Power Calculator
Review reactive-power change from real power and power-factor inputs. This is a screening calculation, not capacitor-bank or harmonic-filter selection.
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Power Factor Calculator
Review power factor and reactive power from real power in kW and apparent power in kVA. This is a screening formula, not a power-quality study.
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Electricity Cost Calculator
Calculate kWh and cost from power, runtime, billing days, and rate per kWh.
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