​Western Area Power Administration owns and operates more than 17,000 circuit miles of transmission lines, 258 substations and other electric power facilities in its 15-state service territory. To ensure reliable electric service, this system must be maintained and periodically upgraded. Also, facilities may need to be added or expanded to meet new demands.

The following are proposed construction projects on WAPA's transmission system in which WAPA will participate, either as the lead agency or as a partner:

• ​Arizona Peaking Capacity Energy Storage Project, DOE/EA-2123​​

• Decision to join the Western Energy Imbalance Service market​

• Fall Protection Training Facility - Phase I​

• Proposal to Remove Price Caps and Modify the Open Access Transmission Tariff

• Proposal to update and modify Open Access Transmission Tariff (Revision 19-01)​​

• Rail Tie Wind Project​​

• Flaming Gorge Dam Operation, Colorado River, DOE/EIS-0351

• Headgate Rock-Blythe No. 1, 161-kV Transmission Line Pole Replacement, AZ and CA, DOE/EA-1427

• Parker-Gila 161-kV Transmission Line Relocation, AZ, DOE/EA-1487

• Southline Transmission Project, AZ and NM
  

• TransWest Express Transmission Project 

• San Luis Transmission Project​ (SLTP)

• Coulsa Sutter Project (CoSu)

• Beale-WAPA Interconnection Project (BWIP)​

• SN Exploration of Energy Imbalance Market​​

Upper Great Plains Region​

• Antelope Valley Station to Neset Transmission Project

• Charlie Creek-Williston Fiber Optic Overhead Ground Wire Installation, ND, DOE/EA-1389

• Havre-Rainbow Transmission Line Rebuild, MT, DOE/EA-1424