Grid math
Calculators for energy, power, and the grid, each with its constants and sources shown.
Grid
Energy unit converterConvert energy between kWh, MWh, Btu, therms, joules, and common fuels, with every constant and its source shown.
You need: nothing
Grid
Emissions from electricity useEstimate the CO₂ and other greenhouse gases from a year of electricity use at your eGRID subregion's average rates.
You need: nothing
Grid
Power factor correctionHow much capacitor correction raises your power factor to a target, and what the low power factor costs on your tariff.
You need: nothing
Grid
Transformer sizing and loadingHow many kVA a load needs, and how heavily a transformer of the rating you are considering would carry it.
You need: nothing
Grid
Battery duration and usable energyHow long a battery runs at a given power, its C-rate, and how much energy it delivers and needs to recharge.
You need: nothing
Grid
Levelized cost of energyThe levelized cost of energy from capital cost, operating costs, and capacity factor, with each term's share shown.
You need: nothing
Grid
Overhead conductor ampacityHow much current a bare overhead conductor can carry in given weather, by the IEEE 738 heat balance.
You need: nothing
Grid
Service headroomHow much room is left on an existing electric service, from the demand the meter already measured.
You need: nothing
Grid
Backup power sizeA first-pass battery and generator size for the loads you need through an outage.
You need: nothing