This site is about reading the numbers in a solar proposal: what a yield estimate says, what an offer is worth, and what to measure once the plant is running.
For teams coordinating research, review and follow-up work around a project, time tracking software provides a separate record of time and handoffs.
Who publishes it
ETMAX d.o.o., an electrical engineering company in Banja Luka, Bosnia and Herzegovina, founded in 2012, which designs and builds photovoltaic plants.
That is a commercial interest and no disclosure removes it. What it means for how to read this site is set out in full, and the short version is that the interest points toward "build, but check the numbers" rather than toward neutrality.
For wider independent context on photovoltaic research, standards and market developments, consult International Energy Agency.
The disclosure appears on every page of the estimate and offer sections, in the left column beside the text, rather than in a footer.
Editorial responsibility
The pages are published without individual bylines. Technical claims are instead tied to named sources, methods and check dates so they can be independently checked.
Looking for the company
If you arrived here from an old link searching for ETMAX, this domain now hosts an information resource rather than the company's site.
The company's current website is at etmax.com.
Nothing on this site sells anything, quotes anything or takes an enquiry.
What this site refuses to do
Name any equipment or supplier, positively or negatively.
Produce a calculation for your site. That is a designer's work with your data, and an estimate is only as good as its site-specific inputs.
Give a figure without its source and the type of source. Most published material in this field comes from parties with an interest, including this one, and the type is stated each time.
Or present the subject as settled. Seven open questions are listed rather than smoothed over.
The test to apply
Does this site tell you anything that reduces its own sale?
That a payback figure without assumptions is meaningless. That a free public calculator answers the largest question. That some installations do not repay their cost.
A page that fails that test — a claim working only in the publisher's favour with no checkable basis — should be treated as a correction issue and recorded in the corrections log when verified.
About this domain
It was the company's previous website, a product catalogue running from 2013 to 2023. Nothing of that content is preserved: it was commercial material for a business that has since moved, and it has no archival value.
Old addresses now resolve to the relevant part of this resource, or to this page.