The Utility Network Package Tools toolbox is a Python toolbox that includes tools to automate the creation and configuration of a utility network. Although the toolbox is not included with ArcGIS Pro, you can install it using the Python Package Manager.
Create a Python project environment
To create a Python project environment using the Python Package Manager in ArcGIS Pro, complete the following steps:
-
Start ArcGIS Pro and click Settings
.
- In the list of tabs on the left, click Package Manager.
- In the upper right corner, click the Environment Manager button.
- Click the Clone environment button
on the row representing the environment you want to clone. Alternatively, click the Clone arcgispro-py3 button 
to clone the default environment. 
The Clone Environment dialog box appears.
- Select your newly cloned environment and click OK.
Cloning an environment may take several minutes. You can close the Clone Environment dialog box while you wait. You can monitor progress in the Tasks section of the Package Manager page.
Install the Utility Network Package Tools toolbox using the Python Package Manager
To install the Utility Network Package Tools toolbox using the Python Package Manager, complete the following steps:
- In the Python Package Manager, click Add Packages to see the Python packages available for installation.
- In the Search box, type untools to find the Utility Network Package Tools toolbox.
- Select the untools package and click the drop-down arrow to update the version.
- Click Install to open the Install Package dialog box.
- Review the terms and conditions and check the check box to agree.
- Click Install to install the package.
- Once complete, close ArcGIS Pro.
The Utility Network Package Tools toolbox is installed, and the next time you start ArcGIS Pro, you can access it from the geoprocessing toolboxes.