SHARE-BASED COMPENSATION PLANS

3 Months Ended

Mar. 31, 2014

Text Block [Abstract]

SHARE-BASED COMPENSATION PLANS

SHARE-BASED COMPENSATION PLANS

RESTRICTED STOCK UNITS

In February 2014, the UNS Energy Compensation Committee granted 16,910 restricted stock units to certain management employees at a grant date fair value, based on the grant date closing share price, of $60.39 per share. The restricted stock units vest on the third anniversary of grant and are distributed in shares of UNS Energy's Common Stock (Common Stock) upon vesting. We recognize compensation expense equal to the fair value on the grant date over the vesting period. These restricted stock units accrue dividend equivalents during the vesting period, which are distributed in shares of Common Stock upon vesting.

PERFORMANCE SHARES

In February 2014, the UNS Energy Compensation Committee granted 33,820 performance share awards to certain management employees. Half of the performance share awards had a grant date fair value, based on a Monte Carlo simulation, of $57.47 per share. Those awards will be paid out in Common Stock based on UNS Energy’s compound annualized total shareholder return relative to the companies included in the Edison Electric Institute Utility Index for the three-year performance period ended December 31, 2016. We recognize compensation expense equal to the fair value on the grant date over the vesting period if the requisite service period is fulfilled, whether or not the threshold is achieved. The remaining half had a grant date fair value, based on the grant date closing share price, of $60.39 per share and will be paid out in Common Stock based on cumulative net income for the three-year performance period ended December 31, 2016. We recognize compensation expense equal to the fair value on the grant date over the requisite service period only for the awards that ultimately vest.

The performance shares vest based on the achievement of these goals by the end of the three-year performance period; any unearned awards are forfeited. Performance shares accrue dividend equivalents during the performance period, which are paid upon vesting.

SHARE-BASED COMPENSATION EXPENSE

UNS Energy and TEP recorded share-based compensation expense of less than $1 million for the three months ended March 31, 2014 and March 31, 2013.

At March 31, 2014, the total unrecognized compensation cost related to non-vested share-based compensation was $5 million, which will be recorded as compensation expense over the remaining vesting periods through February 2017. At March 31, 2014, less than 0.5 million shares were awarded but not yet issued, including target performance shares, under the share-based compensation plans.