TEP - Net Metering

July 07, 2009


Note: In October 2008, the Arizona Corporation Commission (ACC) adopted net metering rules that apply to all investor-owned electric utilities and electric cooperatives in the state. The Arizona attorney general is currently reviewing the rules, which must be certified before they take effect. After the rules are certified, utilities will have 120 days to file new net metering tariffs, and the ACC must approve these tariffs before they take effect. Until TEP's new tariff take effect, the net metering program previously developed by TEP will remain in place. (This program is described below.) Under the new state rules, net metering will be available to customers who generate electricity using solar, wind, hydroelectric, geothermal, biomass, biogas, combined heat and power (CHP), or fuel cell technologies. Individual system capacity will generally be limited to 125% of a customer's total connected electric load. Tucson Electric Power Company (TEP) offers net metering to customers with photovoltaic (PV) and wind-energy systems with a maximum AC peak capacity of 10 kilowatts (kW). TEP credits net excess generation (NEG) to the following month's bill. After each January billing cycle, any remaining credit is granted to the utility. The total net-metered capacity in TEP's service territory is limited to 500 kW. Installations must meet the IEEE 929 standard, local requirements and National Electrical Code (NEC)requirements. Installations must be completed within six months of pre-installation approval. Time-of-use net metering is not permitted.

Program Overview

Implementing Sector: Utility
Category: Regulatory Policy
State: Arizona
Incentive Type: Net Metering
Web Site: http://tucsonelectric.com/Home/Programs/PricingPlans/tariffs.asp
Start Date:
Eligible Renewable/Other Technologies:
  • Solar Photovoltaics
  • Wind (All)
  • Wind (Small)
Applicable Utilities: TEP
System Capacity Limit: 10 kW
Aggregate Capacity Limit: 500 kW
Net Excess Generation: Credited to customer's next bill; granted to utility at end of January
Ownership of Renewable Energy Credits: Not addressed
Meter Aggregation: Not addressed


Name: TEP Pricing Plan PRS-101
Effective Date: 3/20/2003
Name: TEP Pricing Plan PRS-102
Effective Date: 3/20/2003


Name: Blanka Anderson
Organization: Tucson Electric Power
Address: 3950 E. Irvington Road
Tucson AZ 85702
Phone: (520) 918-8296
Email: Banderson@tep.com

This information is sourced from DSIRE; the most comprehensive source of information on incentives and policies that support renewables and energy efficiency in the United States. Established in 1995, DSIRE is operated by the N.C. Clean Energy Technology Center at N.C. State University.