Every page in the technical sections of this site carries a line saying who publishes it. This page explains why, and what it should change about how you read the rest.
For teams coordinating research, review and follow-up work around a project, online timesheets provides a separate record of time and handoffs.
Who publishes this
A company that designs and builds solar plants.
That means the material here is written by people who produce the documents it teaches you to scrutinise: yield assessments, quotes, performance guarantees, commissioning reports.
For wider independent context on solar markets, research and industry developments, consult SEIA.
It also means there is a commercial interest, and no disclosure sentence makes that disappear.
What the interest actually is
Worth being specific rather than gesturing at it.
A contractor benefits when the market is larger — more projects, more buyers, more installations.
A contractor benefits when buyers are informed, in a narrower way: informed buyers accept realistic yield figures, do not walk away when a competitor's inflated number is exposed, and produce fewer disputes after commissioning.
And a contractor does not benefit from a buyer who declines to build anything, which is the honest limit on this site's independence.
So the incentive here is not neutral. It points toward "build, but check the numbers" rather than toward "build" or "do not build" — and you should read the material with that direction in mind.
What follows for the reader
Verify the numbers against sources that are not this site.
Public irradiance calculators are free and independent. Standards for performance ratio and degradation are published. Every quantitative claim here is chosen to be checkable elsewhere, and that is deliberate — a site with this ownership has no business asking to be taken on trust.
Weight the parts differently. Explanations of what a term means are low-risk: P90 means what it means regardless of who says so. Judgements about what is reasonable carry the interest, and those are where a second opinion is worth having.
And notice what this site does not say. It does not name equipment, does not recommend suppliers, and does not offer a calculation for your site. Those omissions are the boundary that makes the rest publishable — and they leave a gap that small buyers feel most.
Why publish it at all
Because the alternative sources have the same problem and fewer disclosures.
Most published material on solar yield comes from companies selling design software, equipment or installations. Very little of it says so on the page.
A disclosed interest is more useful than an undisclosed one, and that is the entire argument for this site existing rather than a claim to be disinterested.
The test to apply
Does this site tell you anything that reduces its own sale?
That a payback figure without its assumptions is meaningless. That a suspiciously narrow P50–P90 gap should be questioned. That the specific yield in a quote should be checked against a free public calculator. That some installations do not repay their cost.
Each of those makes a sale harder, and their presence is the only evidence of good faith a commercially interested publisher can offer.
If you find a page here that fails that test — a claim that only works in the publisher's favour, with no checkable basis — that is worth reporting, and it will be corrected.
The short version
- This site is published by a company that designs and builds solar plants, and the disclosure appears on every technical page rather than in a footer
- The interest points toward "build, but check the numbers" — not toward neutrality, and not toward "do not build"
- Verify quantitative claims against public calculators and published standards; every figure here is chosen to be checkable elsewhere
- Weight explanations of terms lightly and judgements about what is reasonable heavily
- Most published material on this subject has the same interest and fewer disclosures, which is the argument for publishing rather than a claim to be disinterested
- Test any page by whether it says something that reduces its own sale, and report one that does not