Employee incentive programs (Tables)

9 Months Ended

Sep. 30, 2013

Employee incentive programs

Schedule of changes in LTIP notional shares

(Units in thousands)		Units			Grant Date Weighted-Average Price per Unit

Outstanding at December 31, 2012			492,535		$	13.88
Granted			597,031			4.91
Reinvested			45,344			9.12
Forfeited			(138,473	)		8.88
Vested			(202,696	)		13.48

Outstanding at September 30, 2013			793,741		$	7.76

Schedule of assumptions for calculation of simulated total shareholder return under the Monte Carlo model

		September 30, 2013		December 31, 2012

Weighted average risk free rate of return		0.0 – 0.5%		0.1 – 0.3%
Dividend yield		9.0%		10.1%
Expected volatility—Atlantic Power		42.2%		22.5%
Expected volatility—peer companies		10.6 – 96.3%		11.9 – 97.1%
Weighted average remaining measurement period		2.1 years		1.4 years