Recently Issued Accounting Pronouncements

9 Months Ended

Sep. 30, 2011

Recently Issued Accounting Pronouncements [Abstract]

RECENTLY ISSUED ACCOUNTING PRONOUNCEMENTS

NOTE 12. RECENTLY ISSUED ACCOUNTING PRONOUNCEMENTS

The following recently issued accounting standards are not yet reflected in UniSource Energy’s and TEP’s financial statements:

• The Financial Accounting Standards Board (FASB) issued authoritative guidance that will eliminate the current option to report other comprehensive income in the statement of changes in equity. An entity can elect to present items of net income and other comprehensive income in one continuous statement, or in two separate but consecutive statements. We will be required to comply in the first quarter of 2012. We are evaluating which presentation method to use.

• The FASB issued authoritative guidance that changed some fair value measurement principles and disclosure requirements. The most significant disclosure change is expansion of required information for unobservable inputs. We will be required to comply in the first quarter of 2012, and we do not expect this pronouncement to have a material impact on the valuation techniques used to estimate the fair value of assets and liabilities.