Bulk create Project Site using template

Hi,

We have around 1000 projects in our PS2013 environment, and project site is not associated any of them. We have created a new template for project site.

To now create and associate this template with each project (without having to manually publish), we have to use option of managing connected site, but here we can create only one site at a time.

Is there a way for bulk create for multiple projects in one shot? 

Thanks in advance

Atul Sharma