Electricity calculator group

Electricity Usage and Measurement Calculators

Estimate appliance energy, tariffs, demand, generators, UPS loading, metering, and instrument response.

Use one billing or measurement interval

Energy, demand, load factor, diversity, coincidence, generator fuel, UPS loading, and instrument response use different time and power definitions.

Keep tariff period, demand interval, meter ratio, load schedule, and measurement bandwidth aligned with the question being answered.

Electricity Usage and Measurement calculators by result

Appliance Energy UseCalculate appliance energy from appliance power and operating hours.Standby Power CostCalculate annual standby energy cost from power, hours, and tariff.Electricity TariffCalculate electricity charge from energy used and tariff rate.Time-of-Use Electricity CostCalculate peak-period cost from peak energy and peak rate.Electrical Demand ChargeCalculate demand charge from billing demand and demand rate.Electrical Power CostCalculate operating energy cost from power, runtime, and tariff.Electrical Load FactorCalculate load factor from average demand and peak demand.Electrical Diversity FactorCalculate diversity factor from sum of individual peaks and system coincident peak.Electrical Coincidence FactorCalculate coincidence factor from coincident demand and sum of individual peaks.Peak Electrical DemandCalculate estimated peak demand from connected load and demand factor.Energy Efficiency SavingsCalculate annual energy savings from baseline energy and reduction.Generator Fuel ConsumptionCalculate fuel use from electrical energy produced and specific fuel consumption.Generator Fuel RuntimeCalculate generator runtime from usable fuel and fuel consumption.Generator Load PercentageCalculate generator loading from connected apparent load and generator rating.UPS VA RatingCalculate required UPS rating from load power and load power factor.UPS Efficiency LossCalculate UPS power loss from UPS output power and efficiency.Inverter Battery CurrentEstimate inverter battery current from AC load, DC voltage, and efficiency.Electricity Meter PulseCalculate energy represented from meter pulses and pulse constant.Current Transformer ReadingCalculate primary current from meter secondary reading and CT ratio.Oscilloscope BandwidthEstimate oscilloscope rise time from bandwidth and the selected response constant.

Energy and cost calculations

Power cost requires power, operating time, and energy price. Standby cost similarly uses watts, standby hours, and tariff rather than an opaque annual factor.

Time-of-use and demand charges should be evaluated by the utility’s actual interval and billing rules. Fixed fees, ratchets, and seasonal structures may require separate line items.

Generators, UPS systems, and inverters

Generator fuel consumption depends on the operating load and the applicable specific-consumption data. Tank volume divided by a matching hourly rate gives runtime.

UPS and inverter calculations should include power factor, efficiency, battery voltage, low-voltage operation, surge demand, and idle loss as applicable.

Metering and instrument limits

Meter pulse constants and current-transformer ratios must match the installed hardware. Record whether ratios are primary-to-secondary or multiplier values.

Oscilloscope rise time is the selected response constant divided by bandwidth. Probe bandwidth, source impedance, sampling, and signal amplitude also affect what can be observed.