About wattsworthit
wattsworthit works out what it costs to heat, cool and power a home in the United States, using the rates where you live rather than a national guess.
What the site does
Most energy cost estimates online use one national average for every reader. The difference between states is too large for that to be useful: a kilowatt-hour costs several times more in some states than in others, and the cheapest way to heat a house in one state is the most expensive in another. Every page here starts from the federal government's own price data for your state, and every calculator lets you replace it with the rate on your bill.
Who runs it
The site is run by Andy, who signs the pieces as "Andy from the wattsworthit team". The research, the arithmetic and the first drafts are done by AI agents working from published government data, and each week's new pages go to Andy for review before any advertising runs on them. How this site is made explains that process in full, including what is automated and what is not.
Where the numbers come from
Electricity, natural gas, heating oil and propane prices come from the U.S. Energy Information Administration (EIA), the statistical agency of the Department of Energy. The site rebuilds when EIA publishes new figures, and every page says which month or week its prices are from. The formulas behind the calculators, and the constants they use, are on the methodology page with a source for each one.
What the site is not
It does not sell energy, solar panels or heating equipment, and it has no laboratory: it does not test appliances or review products. Its estimates are for planning; they are not a quote from your utility or an installer. It is supported by advertising.
Contact
Write to hello@wattsworthit.com. If you find a mistake, the corrections page explains how fixes are made and lists the ones already made.
Last updated October 17, 2026