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Corrections. If a number, price or statement looks wrong, tell us the page and what you found. A link to the source you are comparing with helps us check faster. Confirmed errors are fixed and the page’s “Updated” date is changed.

Data questions. Ask us about a price, a data period, a formula or an assumption. Our Methodology and Data sources pages may already have the answer.

Press and data studies. Journalists and researchers are welcome to use our figures. Our price dataset is open data under CC BY 4.0, credited as “Source: CentsPerHour (centsperhour.com)”. We are happy to explain how a number was worked out.

API access and licensing. If you want to use our data in a product, or need it in a different form, ask us about API access and licensing.

Partnerships and custom widgets. Our calculator can be embedded on other websites. If you want a custom version or another kind of partnership, get in touch.

Advertising. For advertising enquiries, email us with what you have in mind. Advertising never changes our numbers or our conclusions.

We do not give personal electrical advice. We cannot tell you whether your wiring, circuit, generator or transfer switch is safe or suitable. For that, please hire a licensed electrician.

We also cannot help with a dispute about your electricity bill. Your electricity supplier or your national energy regulator is the right place for that.

Please do not send us account numbers, passwords or copies of your bill by email. If you want help reading a bill, the bill analyzer on our site lets you type in the numbers yourself.

When you email us, we use your address and message only to reply to you. Our Privacy policy explains how we handle personal data.