Every tool
Every published gridprims tool, generated from the tools themselves. Filter by section, what you need, or stability.
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Backup power sizeA first-pass battery and generator size for the loads you need through an outage.
You need: nothing
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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
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Bill checkPrice your bills from the kWh printed on them, line by line, and see how they compare with what you paid.
You need: bill totals
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Cheapest plan on my data
Which of my utility's plans would have cost the least for how I used power?
You need: a meter file · data as of Oct 30, 2026
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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
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Energy unit converter
Convert energy between kWh, MWh, Btu, therms, joules, and common fuels, with every constant and its source shown.
You need: nothing
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Find my utility
Which utilities serve my ZIP code, and which grid region am I in?
You need: a ZIP code · data as of Oct 7, 2026
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Is my use high?Compare a year of your electricity use with the average home of your utility and your state, and see your seasonal swing.
You need: bill totals
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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
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Load and bill workbench
What is my peak demand and load factor in this meter file?
You need: a meter file
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Overhead conductor ampacityHow much current a bare overhead conductor can carry in given weather, by the IEEE 738 heat balance.
You need: nothing
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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
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Revenue requirement explainerWhere a utility's requested revenue comes from, and what one point of return on equity is worth on a home's bill.
You need: nothing
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Service headroomHow much room is left on an existing electric service, from the demand the meter already measured.
You need: nothing
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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
No published tool matches these filters.