How many trackers fit in one hectare: calculating the capacity of a ground-mounted solar plant

On one hectare of flat land you can fit between 0.5 and 0.7 MWp with single-axis solar trackers. That is the short answer, and it is almost never the right one: the real figure depends on the shape of the plot, the module you choose and the row spacing you decide on.

It is the first question a developer asks when offered a piece of land, and the first a customer asks an installer: “how much fits here?”. Answering it well before commissioning engineering saves weeks. In this article we explain what it depends on, give a reference table and show a real example calculated in five minutes with MaxiDesigner, our free tool.

The four factors that determine how many trackers fit

1. Pitch (row spacing). The axis-to-axis distance between two rows of trackers. The smaller the pitch, the more rows fit, but the more they shade each other early and late in the day. For single-axis trackers in 1P configuration, 5 to 7 metres is typical.

2. GCR (Ground Coverage Ratio). The ratio between the width of the module row and the pitch. A GCR of 0.40 means the modules cover 40 % of the ground. It is the best single measure of plant density: more GCR, more capacity per hectare and more shading losses. Modern trackers use backtracking to reduce those losses, which allows higher GCR than fixed-tilt structures.

3. Module and tracker configuration. A 1P tracker carries one module in portrait per row; a 2P carries two. The 2P concentrates more capacity per row, but its row is wider and needs more pitch. Module power (550 to 700 Wp today) multiplies the result directly.

4. The shape of the land. This is the factor rules of thumb ignore and the one that weighs most on small plots. Tracker rows run north-south and come in discrete lengths (an Alphatracker 1P tracker reaches up to 64 m; a 2P up to 36 m). On a triangular, narrow or diagonally bounded plot, a large part of the surface is unused or only admits short infill sections.

Rule of thumb: capacity per hectare by GCR

For a first estimate on flat, rectangular land, installable capacity per hectare is roughly 10,000 m² × GCR × module power per m². With current modules at about 215–225 Wp/m²:

These values are the theoretical ceiling of a perfect plot: no roads, no setbacks, no transformer stations, no fencing. In practice, after roads and setbacks, a real ground-mounted plant lands between 0.5 and 0.7 MWp per hectare, and small or irregular plots can fall well below that, as the next example shows.

Real example: a 0.18-hectare plot calculated with MaxiDesigner

We took a real agricultural plot of about 37 × 48 metres, rhombus-shaped with a diagonal boundary: around 1,780 m², i.e. 0.18 ha. We drew it on the satellite image in MaxiDesigner, chose a 660 Wp module and let the tool calculate the layout.

Result: 0.60 MWp per hectare. The rule of thumb at GCR 0.40 would promise 0.85 MWp/ha; the real plot admits 30 % less. The difference comes from the two diagonal boundaries, which shorten the end rows, and from almost half the modules going into infill sections.

The whole calculation, including the 3D view, took under five minutes. With orientation adjustable in degrees you can check on the spot whether rotating the rows a few degrees to align with the long boundary increases the module count.

Why the rule of thumb fails on real land

The per-hectare formula assumes an infinite rectangle. Real land loses surface in five ways:

• Boundaries not parallel to the rows. Every diagonal side leaves a triangular wedge where only short sections fit, or nothing. It is the main loss on plots under 2 ha.
• Setbacks. Minimum distances to roads, watercourses, power lines and neighbouring farms set by each municipality or region.
• Internal roads and transformer area. Essential above a certain size; in 1 MW plants they can take 5–10 % of the surface.
• Discrete tracker lengths. Rows are not cut to measure: they are made of standard sections. A 70 m long plot does not admit two 36 m rows plus their gap.
• Slope and terrain. A conventional tracker needs grading on sloped land; Alphatracker trackers adapt with solutions such as Flexslope, recovering surface that would otherwise be lost to earthworks.

So the useful calculation is not “MW per hectare” but “how many trackers fit on this plot”. And that is only answered by drawing the real perimeter.

How to calculate it for free in 5 minutes with MaxiDesigner

MaxiDesigner is Alphatracker’s free tool for designing PV plants with trackers up to 1 MW. The flow has five steps:

1. Profile. Create a free account and set your profile (installer, developer, engineering firm).
2. Module. Choose the PV module you will use; its power and dimensions drive the rest of the calculation.
3. Terrain. Locate the plot on the satellite map and mark its vertices. The tool measures each side and calculates the area.
4. Design. MaxiDesigner places the trackers, calculates capacity, number of trackers and modules, pitch and GCR, and lets you adjust the orientation. Press “View in 3D” to walk the plant on the real terrain.
5. Quote. Send the design to Alphatracker and receive a proposal with the tracker that best fits your location.

The result is a preliminary design to decide whether the land deserves detailed engineering, not an executive project. For plants over 1 MW, or for agrivoltaic projects where the pitch must leave room for machinery, our team continues the work from that design.

Design your plant for free with MaxiDesigner →

Frequently asked questions

How many MW fit in one hectare with solar trackers?

One hectare with solar trackers holds between 0.5 and 0.7 MWp under real conditions (after roads and setbacks). The theoretical ceiling at GCR 0.40 is around 0.85 MWp/ha on a perfect rectangular plot.

What is pitch in a PV plant?

Pitch is the distance between the axes of two consecutive tracker rows. With single-axis trackers in 1P configuration it is usually between 5 and 7 metres.

What GCR is used in tracker plants?

Typical GCR in single-axis tracker plants is between 0.33 and 0.45. Higher values increase capacity per hectare at the cost of more shading losses, which backtracking partly reduces.

How many hectares do I need for 1 MW?

For 1 MWp with solar trackers you need between 1.5 and 2 hectares of usable land, depending on plot shape, module and chosen GCR.

How do I know how many trackers fit on my land?

The most reliable way is to draw the real perimeter of the plot in a layout tool. MaxiDesigner does it for free in five minutes and returns the number of trackers, capacity, pitch and GCR.