HOME POWER CALCULATORS
Estimate battery runtime, generator size, solar needs, and other home power requirements with easy-to-use calculators.
Battery Runtime Calculator
Generator Size Calculator
Solar Sizing Calculator
Estimate how long a home battery can power your appliances during an outage.
Estimate what size generator you need to power your home or essential appliances.
Estimate how many solar panels you may need based on your home's electricity use.
RV & Travel Trailer Power Calculator
Battery Runtime Calculator
Battery Size Calculator
Off-Grid Power Calculator
Estimate the battery, solar, inverter, and generator needs for your RV or travel trailer.
Estimate what size battery you need to power the appliances and devices you want to run.
Estimate the solar, battery, and generator capacity you may need for off-grid living.
Our Unbiased Data
Transparent Calculations, Real-World Data
Real-World
Appliance Wattages
Adjustable
Calculation Assumptions
Plain-English
Results & Explanations
Ready to Start Planning?
Choose a calculator to estimate your battery, generator, solar, or backup power needs.