Tucson Electric Power Rate Increase 2026: What Customers Need to Know

Nearly half a million Arizonans are bracing for even higher electricity bills, as utility regulators consider a 14% bill increase request for Tucson Electric Power (TEP) residential customers.

If approved, customers would see their average bill increase by around $16 per month beginning in September 2026.

At-A-Glance: 2026 TEP Rate Impact

Tucson Electric Power has submitted a request to the Arizona Corporation Commission (ACC) for a rate review that would significantly adjust monthly bills starting in late 2026.

Why is TEP proposing higher rates?

TEP states that the new rates are necessary to cover rising operational costs and to recover $1.7 billion invested in the local energy grid since 2021. Key drivers for this request include:

• Reliability & Weather: Investments in substations and grid reinforcement to handle extreme heat and weather events.
• Clean Energy Transition: The $350 million Roadrunner Reserve battery storage system, designed to serve 42,000 homes and better integrate solar/wind resources.
• Rising Costs: Inflation-driven price increases for equipment, construction materials, and labor—noting that consumer prices rose 15% between 2021 and 2025.
• Infrastructure: Upgrades to 5,300 miles of transmission lines and 120 substations to support a 1% annual growth in the customer base.

How will that impact your bill?

For a median residential customer on the Basic pricing plan (using 638 kWh/month), this pending rate hike adds roughly $16 to every bill. During the peak summer months, when usage typically jumps to 823 kWh, that impact is projected to rise to $18 per month.

Over a single year, the average TEP household would pay an additional $192 to $216. Over the next decade—assuming rates do not rise again—this equates to approximately $2,000 in extra costs for the same amount of electricity.

How to Offset the TEP Rate Hike

With TEP projecting even higher future demand due to hotter weather and economic growth, residential customers can “opt out” of future rate hikes by installing solar and/or battery storage. Going solar allows you to set a low, predictable price for the clean electricity powering your home.

Get custom proposals for your home and review your savings potential with an expert Energy Advisor.