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About Power Size Guide
A small independent site that answers one question well: what size portable power station do you need for the things you want to run?
Why this site exists
Most of what you find when you search this question is written by the companies that sell power stations. Their guides are often useful, but they tend to end with their own product. We wanted a place that starts with your appliances and shows the working, so you can check any brand's spec sheet yourself.
How we work out the numbers
- Appliance power figures come from typical ratings on appliance labels and manufacturer spec sheets. We list the figures we use on every page.
- Run times use the formulas shown on the calculator page, including an allowance for inverter losses.
- We have not lab-tested specific power stations, and we don't claim to. When a page compares products, it compares published specifications.
- When we get something wrong, we correct the page and update the date at the top.
How the site makes money
Right now, it doesn't. If we add affiliate links in future (for example to Amazon), we will say so clearly on the page where they appear. Being paid for a link will not change which size we recommend.
Contact
Spotted a mistake or have an appliance you want added to the calculator? Email hello@powersizeguide.com.