Utility Projects

Resource Planning

Safe, Reliable Power for the Future

UniSource Energy Services (UES) is diversifying its portfolio of resources in response to new environmental regulations, emerging technology and changes in our customers’ energy needs.  To inform regulators, customers and other interested stakeholders about these and other changes, UES and its sister company, Tucson Electric Power ( UES), have developed Integrated Resource Plans (IRPs).   These IRPs present the detailed assumptions and analyses used to develop the companies’ strategies for serving customers’ long-term energy needs.

2017 IRP

Unisource Energy Services filed its 2017 UNSE IRP with the Arizona Corporation Commission on April 3, 2017. This IRP covers the period from 2017 through 2032.

UES 2017 Integrated Resource Plan – PDF 5 MB

TEP 2017 Integrated Resource Plan

2016 IRP

UES 2016 Integrated Resource Plan – PDF 8 MB

TEP Integrated Resource Plan