This is the 2740th most frequent German word.
installieren
To install.
The verb 'installieren' is used in its past tense form 'installiert', indicating the completion of the action of setting up software on a computer.
Ich habe gestern ein neues Programm auf meinem Computer installiert.
I installed a new program on my computer yesterday.
Here 'installieren' is in its infinitive form, showing the requirement to carry out the installation to make the device functional.
Um das Gerät nutzen zu können, muss man zuerst die Treiber installieren.
To be able to use the device, one must first install the drivers.
In this instance, 'installieren' refers to the physical setup and configuration of equipment, specifically solar panels.