About CentsPerHour

CentsPerHour is run by Muhammad Uzair, based in Pakistan. Muhammad Uzair is a Flutter developer and mobile engineering team lead who builds cross-platform apps. He built CentsPerHour to make electricity costs easy to understand, using official data instead of guesses.

The site started in 2026. You can reach us at uzairxdev@gmail.com. We read every message, and we especially want to hear from you if you find a mistake.

Most people pay for electricity without knowing what each appliance costs them. A bill shows a total, not the share used by the heater, the fridge or the air conditioner. Questions like “how much does it cost to run a space heater for an hour?” sound simple, but the honest answer depends on where you live, what you pay per kilowatt-hour, and how your tariff works.

Many calculators online use one made-up price for everyone, or ignore the way some countries charge more as you use more. We built CentsPerHour to do this properly: start from official price data, show the formula, and let you put in your own numbers when they differ from ours.

Official price data. Our default prices come from public, official sources: the U.S. Energy Information Administration for US states, Eurostat for around 40 European countries, Ofgem’s price cap for Great Britain, and national energy regulators’ and utilities’ published tariffs for many other countries. Every price on the site shows where it came from and which period it covers. You can read the details on our Data sources page.

Tariff-aware maths. In countries with slab or tiered tariffs, such as Pakistan, India, Japan, South Korea and parts of the US, the extra units an appliance uses are charged at the rate of the slab your household is in. That marginal rate is usually higher than the average price. Our calculators and guides explain this and let you use the rate that actually applies to you.

Open methodology. We publish exactly how we calculate every number, including the formulas, the duty cycles we assume for fridges and other thermostat appliances, and the limits of our estimates. Nothing is hidden behind a black box. See our Methodology page.

Many languages. The site is written in English and translated into Spanish, German, French, Portuguese, Urdu, Hindi, Arabic, Japanese, Korean and Indonesian. Translations are drafted with AI help and checked by a native speaker before they are published. Until then, drafts are clearly marked and kept out of search engines.

Use a calculator to see the running cost of a specific appliance in your country. Read a guide to understand why an appliance costs what it does and how to spend less. Use the bill analyzer to work out the real price per kWh from your own bill, including which slab you are in.

If you need the data itself, our electricity price dataset is published as open data in CSV and JSON under a Creative Commons Attribution 4.0 (CC BY 4.0) licence. You can also embed our calculator on your own site. Businesses can contact us about API access, licensing, custom widgets and partnerships.

A person checks every number, title and claim against its source before a page is published. We may use AI tools to help with research, code, outlines, first drafts and translation drafts, but AI output is never published without that human check. Our Editorial policy explains the process in full.

Price data is checked for updates every week by an automated job. If new data is malformed, the build fails and the old, verified data stays in place. We would rather show a slightly older price than a wrong one.

When a reader reports an error and we confirm it, we fix it and change the page’s “Updated” date. We never change that date unless the page has really changed.

CentsPerHour is free to use. It is paid for by display advertising, by affiliate links on some pages, and by partnerships such as data licensing and custom widgets.

None of this changes the numbers. Advertisers and partners do not decide what we calculate, which prices we use, or what our results say. Where we recommend a product, the recommendation is based on the calculations. You can read more in our Affiliate disclosure.

CentsPerHour gives estimates, not professional advice. We are not electricians, and we cannot advise on your wiring, generator or transfer switch. For any electrical work, hire a licensed electrician. Our Disclaimer page explains the limits of our estimates.