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Home energy audits.
Made simple.

Understand your home's energy use, explore improvements, and build a report you can share. We'll guide you through the numbers.

Get started freeHow it works

Free walkthrough & dashboard. Tailored PDF reports: $19 once.

See a sample report
Illustration of a person working through calculations beside a large calculator
Illustration of a person working through calculations beside a large calculator

FROM QUESTIONS TO A USEFUL ESTIMATE

Make your next energy decision with the inputs in view

A high bill, a home without usage history, or a planned EV can leave you guessing. Watt Wisdom organizes the details so you can see what drives energy use and what still needs checking.

Answer one topic at a time

Work through your home, heating and cooling, appliances, and daily use. Add nameplate specifications when you have them and mark uncertain answers for review.

Gather your floor area, fuel types and major equipment details before you start. You can save your progress and return when you have more information.

Walkthrough Illustration

WHAT YOU CAN WORK OUT

From a total number to useful next steps

Follow the large loads, check the assumptions, and compare changes using the same home model. These are estimates of electricity use, not measurements of the property.

Find the large loads

See annual energy use by category and individual equipment, with quantities and usage assumptions available to review.

Compare a real change

Enter the EV mileage, replacement specifications or operating hours you want to test. Compare changes together before saving them.

Separate existing and planned use

Mark the loads already in the home and the equipment you plan to add. See their joint effect on annual electricity.

Put bills in context

Add dated electricity bills. Compare supported periods and see when solar readings, missing dates or planned loads limit the comparison.

Keep assumptions visible

Review fuel choices, equipment details, schedules, weather year and electricity rate. Unknown inputs remain questions to resolve.

Save both report formats

For $19 once, save the full assessment and concise consumption documentation for this household, with dated versions you can download again.

RESOURCES

Free Energy Cost Guides

Not ready to sign up? Browse free guides to estimate running costs for specific appliances — no account needed.

How Much Does It Cost to Run a Pool Pump?

How Much Does It Cost to Charge an EV at Home?

How Much Electricity Does Central AC Use?

How Much Does an Electric Water Heater Cost to Run?

FREE TO EXPLORE. PAY WHEN YOU NEED THE REPORT.

One household. Both reports. $19 once.

Review your estimate first. The one-time purchase adds dated PDF versions you can keep and share. There is no subscription and no separate charge for the second format.

Build and explore

Understand the estimate before you buy a report.

$0

No payment needed

  • Guided walkthrough and saved answers

  • Annual energy use and equipment breakdown

  • Bill comparison when your inputs support it

  • Editable comparisons for planned changes

  • Review missing inputs and assumptions

Build my free estimate

Keep and share

One-time purchase for this household profile.

$19

One time | Both PDFs | No subscription

  • Everything in the free dashboard

  • Home energy report (PDF)

  • Concise consumption-planning report (PDF)

  • Existing and planned load documentation

  • Dated versions with saved inputs and sources

  • Re-download stored reports after changing your estimate

Start with a free estimate
First page of the synthetic example energy report

Synthetic example · page 1

Preview both report formats

These public samples use a synthetic example household. They do not contain your answers or a customer assessment.