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Deep dive 2 of 7

Who is in the catalogue

190 manufacturers publish at least one module we can read. The largest catalogue holds 654 panels; the median holds far fewer, and a brand with four modules sits in the same table as a brand with five hundred.

That makes every average on this page a figure that needs its denominator. A catalogue average rewards a narrow premium range and punishes breadth, so the panel count is printed beside each one and thin catalogues are marked. Read the averages as "what this brand mostly sells", never as "how good this brand is".

Manufacturers
190
with at least one panel
Panels tracked
14,133
read from datasheets
Largest catalogue
654 panels
AE Solar
Median efficiency
21.82%
across all panels, not brands
Median density
218 Wp/m²
per square metre
Median warranty
15 yrs
product, not performance
01

Who ships the most

Catalogue size, which is a measure of breadth and nothing else.

Size is not quality

A large catalogue usually means a full range from budget to flagship, which pulls the brand's average towards the middle of the market while its best module sits at the top of it.

A small catalogue can be a specialist with one excellent product line, or a rebadger with four. The count beside each average is what tells them apart, and the lists below mark anything under twenty panels in amber.

Largest catalogue AE Solar 654 panels
02

Who is good at what

Three different questions with three different answers. No brand leads all of them.

03

Density and technology mix

What the market is shipping

The technology mix across every panel that declares one. Individual brands sit a long way from this average: a catalogue built in the last two years is mostly TOPCon, one that has not been refreshed is mostly PERC. 12,962 panels declare a technology.

Share of panels declaring a cell technology.
04

How these numbers are built

Read from datasheets

Every figure comes from a manufacturer datasheet ingested into the panel database. Nothing is modelled, estimated, or supplied by a brand outside its own published specification.

Recomputed daily

Aggregates recompute as new panels arrive. A panel that does not declare a value is left out of that average rather than filled in, so every figure here is backed by modules that actually publish it.

Unweighted and unpaid

No paid placements, and no figure here reads which shops pay us a commission. Each power rating counts as the module it is. Bifacial datasheets that quote one module at several assumed rear-side gains are counted once, on their front-side rating.