Who publishes this site, and how it is made
Energy Sizing is an independent publisher about sizing a home energy setup: a battery, a panel array, or both. It is written and maintained by one editor, it takes no money from brands, and every number on it is traceable to a named source or a printed formula.
Quick answer
One editor publishes this site. Figures come from manufacturer datasheets, energy labels and government sources, each recorded with a date. The calculators run in your browser, print their formulas, and are checked against hand-worked examples before a page is published. We do not buy, borrow or accept equipment, so we never claim to have tested any. Some links here are Amazon affiliate links: as an Amazon Associate we earn from qualifying purchases, and the price you pay is the same.
What this site is, and what it is not
It is a set of sizing tools. Each one answers a question people ask before spending money: how much energy does a house use, how large a battery covers a two-day outage, how many panels refill that battery in a day, how long a refrigerator runs on a given capacity. The answer is arithmetic, and the arithmetic is on the page.
It is not a shop, a review outlet or a news site. There is no product database that updates itself, no score out of ten, and no coverage of launches. When a page mentions a product, the reason is that the product fits a load profile the calculator can compute, not that the product is new or popular.
It is also not an electrical contractor, a lawyer or a financial adviser. A page may tell you that a circuit has a limit; it will not tell you whether your wiring is safe, and it does not replace the person who signs the permit. Anything involving a panel, a breaker or permanent wiring needs a licensed electrician and, in most places, a permit.
Who writes it
The site is run by one editor who owns every page: the choice of topic, the sourcing, the arithmetic and the wording. There is no newsroom to blame and no brand relationship to protect, which is the point of keeping it small.
Drafting is supported by software, and that is disclosed here rather than left implied. The software does not choose what goes on a page by itself: every figure is checked against a named source or recomputed by hand, and every page passes a fixed set of checks before it is published. Those checks include structural rules, a source count, a spelling and readability pass, and a set of hand-worked calculator cases.
Because there is one editor, the site is honest about its limits. We have not measured a house, we have not installed a system, and we have not run a product for months. Where a number would need a measurement we do not have, the page says so and gives a range instead.
How a page gets made
Every page follows the same six steps. The point of listing them is that each step leaves something a reader can check.
| Step | What happens | What you can check |
|---|---|---|
| 1. Question | The page is built around one decision a reader is trying to make | The first section states that decision in plain words |
| 2. Arithmetic | The formula is fixed before any prose is written | Every calculator prints its formula and accepts your own figures |
| 3. Sources | Each figure is traced to a datasheet, a label or a government page | The source block names the publisher, the address and the date it was read |
| 4. Checks | Structure, links, compliance and readability are tested by script | Broken links and missing disclosures are caught before publication |
| 5. Examples | At least one worked case runs end to end with real numbers | The same case can be reproduced in the calculator |
| 6. Record | Every correction is dated and logged | The changelog lists what changed and when |
What we will not do
We will not invent a measurement. No page on this site says we ran equipment for a season, because we did not. Numbers we did not measure are labelled as planning values, and their source is named.
We will not take free hardware. A free unit creates an obligation, and the site is worth more without one. That is also why there are no unboxing pages and no first-impression posts.
We will not sell a position. A product cannot buy a higher place in a list, a longer entry, or a mention in a calculator result. The ordering rule is printed on the page that uses it.
We will not print a price. A retailer's live price is the only accurate one, so every product link says Check current price and the figure stays on the retailer's page.
When we get something wrong
Tell us the page and the figure. We check it against the original source, and if the source disagrees with the page, the page changes. The correction is then recorded in the site changelog with the date, so a reader can see what moved rather than finding a page that quietly reads differently from last week.
Two kinds of report are especially useful. The first is a specification that has changed since we read it, because manufacturers revise capacity and output between production runs. The second is a unit or arithmetic error, because those are the ones that turn into a purchase of the wrong size.
If a page and a calculator disagree, the calculator is correct and the page is the bug. That rule is printed on the site because it has been true more than once.
Questions people ask
Who publishes Energy Sizing?
Energy Sizing is an independent publisher. One editor owns every page: the arithmetic, the sourcing and the wording. There is no newsroom, no sales team and no sponsored content.
Do you test the products you list?
No, and we do not claim to. Every specification comes from a manufacturer datasheet, an energy label or a government source, with the address and the date it was read. Where we are estimating rather than citing, the sentence says so.
Can I check a number myself?
Every calculator prints the formula it uses, so the arithmetic can be repeated by hand. Each data table records where its rows came from. The changelog lists every correction with the date it was made.
How does the site make money?
Through Amazon affiliate links marked Check current price. The commission comes out of the price Amazon already charges, and no brand can pay for a position. The disclosure page sets out the detail.
How do I report an error?
Write to contact@energysizing.com with the page address and the figure you think is wrong. If you are right, the page changes and the correction is recorded in the changelog rather than made quietly.
Contact, and where to read more
Corrections, source suggestions and questions about a calculation go to contact@energysizing.com. The address reaches the editor directly; there is no ticket queue behind it.
How the numbers are produced is set out on the method page. How the site earns money, and what it refuses to do for a commission, is on the disclosure page. What you agree to by using the site is on the terms page, and what is collected is on the privacy page.
- Federal Trade Commission, Endorsement Guides — the rules on disclosure that shape this page.
- Amazon, Associates Program Operating Agreement. Read 2026-11-09.
- U.S. Department of Energy, How homes use energy. Read 2026-11-03.