What is the Environmental Compliance Adjustor (ECA)?

The ECA is a charge that allows TEP to recover a portion of the expenses for improvements made at TEP’s power plants. These improvements are necessary to comply with environmental standards required by federal or other governmental agencies.

How will this affect my bill?

Typically, the Arizona Corporation Commission (ACC) conducts an annual review of the ECA, approving a rate adjustment that takes effect in May and is used to calculate customer bills for 12 months.

The rate, which is effective beginning February 27, 2017, will be $0.000062 per kilowatt hour (kWh). For a residential customer with average monthly usage of 800 kWh, this will result in a charge of about 5 cents.

Why is the ECA necessary?

The charge allows for timely and more gradual recovery of certain environmental compliance costs, mitigating the larger impact that would result from leaving those costs unrecovered until the next base rate increase approved by the ACC.