Market Pricing-Experimental (MP-EX) Pilot Program

TEP has updated drafts of the MP-EX Program documents. The new drafts include redlined changes based on input from the February 26, 2021 stakeholder meeting. Click below to view the revised documents.

Please submit any final written comments to by close of business on Friday, March 12, 2021.

Our proposed Market Pricing-Experimental (MP-EX) Pilot Program allows a limited number of medium and large commercial and industrial customers to pay a market-based price for power instead of TEP’s standard applicable Base Power charge and Purchased Power and Fuel Adjustment Clause (PPFAC) charge.

TEP will continue to provide generation, transmission, delivery and network services to customers participating in the pilot. Participation, available through two different programs, is limited to 75,000 kilowatts (kW) of load (50,000 kW for LPS/LPS-HV customers and 25,000 kW for MGS/LGS customers).

All other provisions, charges, and adjustments in participants’ applicable rate schedule and riders will continue to apply.

The original drafts of the program documents are posted below. The rider describes the rates and charges for this pilot program. Additional details are provided in the Plan of Administration and Program Guidelines.