Privacy
kWh Check (https://kwhcheck.com) publishes public electricity statistics and calculators. This page says what the site does with information. The contact address is hello@kwhcheck.com. There is no phone number.
Calculators
The bill, appliance, EV, heating, and Texas-plan tools run in the browser. Kilowatt-hours, wattage, miles, and efficiency numbers you type stay on that page. They are not written to an account, because there are no accounts. Choosing a utility loads a data file that was already published with the site.
If you email hello@kwhcheck.com, the message is read to answer you. A reply is sent within three business days. The message is not added to a marketing list. Do not send an account number, a full bill PDF, or a Social Security number. A page URL and the figure you are asking about are enough.
Advertising
Each page loads the Google AdSense script for publisher ca-pub-8904412359783963. The same publisher is named in ads.txt. Google may set or read cookies and similar identifiers to choose ads, limit how often an ad is shown, and measure impressions and clicks. Those cookies are Google's. Advertising does not change the electricity figures. Google describes the controls here:
Analytics
kWh Check does not load its own analytics tag. There is no separate pageview product in this site. Ad measurement described above is done by Google AdSense as part of serving ads. The host may keep ordinary request logs — IP address, user agent, and the URL — for security and debugging. Those logs are not a visitor analytics report and they are not sold.
Public data
Utility names, customer counts, and prices come from government and utility publications listed on the methodology page. They are not information you submitted.