Calculate starting vs. running wattage and fuel consumption for portable inverters, whole-home standby generators, and solar battery storage.
Grid Authority: ERCOT (Electric Reliability Council of Texas) · Avg. Annual Outages: 19.4 hrs/yr
Winter freeze-offs (e.g. Winter Storm Uri), extreme summer heatwaves exceeding 85GW reserve margins.
Includes automatic transfer switch (ATS), subpanel interlock, and certified utility permit inspection.
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Groundwork decision utilities are built on reproducible formulas and verified empirical benchmarks.
This utility calculates primary outputs by computing the relationship between user input parameters, standardizing baseline costs, and projecting scenarios according to mathematical amortizations and empirical distributions.
All projections are calculated locally in your browser for 100% privacy and zero data harvesting.
The Home Backup Power & Generator Sizing Calculator uses empirical formulas and benchmark parameters defined in the Groundwork decision framework. It evaluates user inputs such as Total running wattage (W), Outage duration (hours) to produce instant, verifiable projections.
Yes, Groundwork's Home Backup Power & Generator Sizing Calculator is completely free, runs privately in your browser without requiring registration to calculate, and contains no sponsored financial bias.
Yes, you can use the embed code provided at the bottom of the page to host this calculator on your blog or research portal with automatic responsive styling.
For information only — not financial, medical, or legal advice.
Home Backup Power & Generator Sizing Calculator — Calculations use publicly available benchmarks and are for education. Verify with a licensed professional. Primary sources: DOE · EPA · EIA.
Groundwork cites energy.gov, epa.gov, eia.gov directly in methodology. No sponsored bias.
Are the mathematical formulas and benchmark assumptions reflecting current regulatory and market baselines?
See the result for a sample scenario, then run your own numbers.
View example result →Invest in community solar gardens like SunShare's Juniper Sol project in New Mexico, which incorporates agrivoltaic practices and benefits income-qualified
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Free to embed on any blog, financial guide, or open-source repo. Widgets automatically adapt to container width.
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