East-west or dual-tilt racking is a viable and economic solar structure choice for developers when they need to fit as many solar modules on a site as possible. The East-West racking method involves placing solar modules on the rooftop in an east-west orientation instead of the traditional south-north orientation.
This allows for a smaller inter-row spacing (IRS) between modules, as the sun's trajectory is less perpendicular to the modules, reducing the amount of shadowing from adjacent modules. This method is particularly useful in countries with higher latitudes, where the traditional south-north orientation would result in a high IRS and low feasibility for a given rooftop area.
To create a proper dual tilt design, use the guidelines below to better understand how dual tilt racking works in the software.
Step 1: Create a design and place modules using Fill face, Add Subarray mode or Add Table mode.
Step 2: After the modules are placed right click on any one module and go to subarray properties.
Step 3: In the subarray properties change the template to East West Racking and click on Update. The array will automatically change into East West racking.
Step 4: The user can also change and update other subarray properties.
Understanding Subarray Properties:-
Intra Row Spacing: It is the spacing in between East and West side of a row.
Inter Row Spacing: It is the distance between East of one row and West of adjacent row.