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Capacity iteration - Fixed-tilt PV layout
Capacity iteration - Fixed-tilt PV layout

Required, Capacity, Max, kW, kWp, Iteration, Row, Shading, Angle, Spacing, Pitch, Step, Fixed-tilt

Vito Bindokas avatar
Written by Vito Bindokas
Updated over a week ago

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Capacity iteration parameters

The capacity iteration tool can be used to run calculations to determine if it is possible to fit a certain power capacity within the given area (or multiple areas). It may also be used to populate PV areas with frames as you would using Generate Single Area & Generate Multiple Areas.

Prior to attempting to use the Capacity iteration feature, we must ensure that both the Layout settings and Frame & Park settings are established. These parameters will be used when performing capacity iterations.

🛈 Important: One should set the Shade limit toggle to "Angle" in the Frame & Park settings for it to work. To learn more about Layout, Frame & Park settings, click below:

We start by opening the Capacity iteration tool by clicking on its icon.

We are now able to select one or more PV areas (based on preference and/or viability) that you would like the tool to iterate. The Capacity iteration tool will remember your selection and will not require you to re-select should you need to reiterate the areas later. We will now select our PV area by clicking on Single Area in the Select areas field, and then selecting the target PV area boundary line. Then we are prompted to draw an alignment line - once we have drawn it, we press Enter or Space on the keyboard to finalize the selection.

The iteration process can be used to determine the precise pitch or tilt angle to reach your capacity. It depends on which iteration options you have selected.

  • From - this value represents the lowest distance or angle that the program will consider for the iteration.

  • To - this value represents the furthest distance or angle that the program will consider for the iteration.

  • Pitch/Tilt step - the increment by which the software will adjust the parameters. If the range of pitches that is defined is from 6 to 10 meters, then the software will provide scenarios with 6,7, ..., 9, & 10 meters as possible options. The same applies to the tilt angle. The number of iterations that the tool will produce is equal to the product of the number of possible options for pitch and tilt: N(pitch) x N (tilt).

Having those limits in place may also imply having shading in certain areas because we are restraining the required distance to be shade-free for a given angle.

Iteration types

  • Iterate by pitch - since the area was selected before that now we need to enable the pitch check box and specify the starting value of the pitch let us use 4 meters and a maximum pitch of 8 meters. The next step is to specify the pitch step, let us leave it at 1 meter, this way if we click on Iterate we will get 5 iterations on the left side of the iteration menu. Once that is done, you may click to Iterate

  • Iterate by tilt angle - since the area was selected before that now we need to enable the tilt angle check box and specify the starting value of the tilt angle let us use 15 degrees and a maximum tilt angle of 20 degrees. The next step is to specify the tilt step, let us leave it at 1 meter, this way if we click on Iterate we will get 6 iterations on the left side of the iteration menu. If only the tilt angle is selected for the iteration the pitch will be taken from the Park settings menu. Once that is done, you may click to Iterate

  • Iterate by pitch and tilt angle - we can enable both checkboxes and use the same parameters that we have defined in the prior generations. This way PVcase will join both iterations into one and we will have 30 iterations because we will have the same pitch with multiple tilt angles. Once that is done, you may click to Iterate

This will create a list of all viable options from which you can select which ones have your desired results and you can place them into your layout by clicking Generate.

You can generate multiple different iterations without losing the previous ones. You can use the Pin tool to retain layouts that are best suited for your project. These will be retained even if you re-iterate with new parameters.

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