On a ground-mount site the deciding factor is not area but inter-row spacing. To lay modules out without shading each other you must leave a gap between rows, and that gap changes with latitude, module tilt and the slope of the land. That is why there is no single “X modules per hectare” figure — the parcel's own geometry decides.
Rows must not shade each other at the winter solstice. The required spacing grows with latitude: the same parcel takes more modules in the south of the country and fewer in the north.
A gentle south-facing slope shortens the row spacing; a north-facing slope lengthens it. Steep faces may be excluded from the layout entirely.
On a long, narrow parcel the rows do not meet the edges cleanly and leftover strips appear. A square parcel takes more modules for the same area.
The row × module configuration (3×26, for example) sets both the module count and the mounting cost. Change the configuration and the layout is rebuilt from scratch.
A hectare is 10,000 m². Divide by module area and you get roughly 4,500 modules. In practice a hectare usually takes 1,200-1,800; the whole difference comes from inter-row spacing.
That gap is not fixed: latitude, module tilt, table height and ground slope set it together. Changing the shading loss you are willing to accept moves the number directly as well.
Shorten the row spacing and more modules fit, but the rows shade each other and yield per module falls. Total yield rises up to a point, then begins to decline.
That call cannot be made by guesswork. The software shows both ends at once: as you tighten the layout, module count, shading loss and annual yield all update together.
The number comes from the parcel's own geometry and the layout.
On most sites it works out at 1,200-1,800 modules, which is roughly 700 kWp to 1.1 MWp. The range is wide because of inter-row spacing: latitude, module tilt and slope set that distance. The exact number only comes from generating a layout on the parcel's own geometry.
Expect roughly 3.5 MWp to 5.5 MWp. Parcel shape and slope decide where in that range you land; a narrow, sloping parcel sits near the lower bound.
More modules fit, but the rows shade each other and yield per module falls. The software shows the trade-off: module count, shading loss and total yield update together.
It can. The tables follow the ground elevation and sit at their true levels in the 3D output. Steep faces can be excluded from the layout.
It is minutes from a parcel lookup to a module count. Runs in the browser, no installation.