Atlantic Power 8-K Regulation FD Disclosure

Exhibit 99.1

Atlantic Power

Historical Financials

	2012								2013						YTD 30-Sep				LTM Sep-
USDmm (unless otherwise stated)	Q1-2012		Q2-2012		Q3-2012		Q4-2012		Q1-2013		Q2-2013		Q3-2013		2012		2013		2013
Total Revenue	118		111		91		114		122		113		115		321		351		465
Cost of Fuel	(45	)	(39	)	(35	)	(66	)	(51	)	(50	)	(47	)	(119	)	(149	)	(215	)
Gross Margin	73		72		57		47		71		63		68		201		203		251
% of sales	61.5	%	64.7	%	62.1	%	41.6	%	58.1	%	55.6	%	59.3	%	62.8	%	57.7	%	53.8	%
O&M Expense	(18	)	(31	)	(20	)	(36	)	(19	)	(31	)	(24	)	(69	)	(73	)	(109	)
APLP EBITDA	55		41		36		11		53		32		45		132		129		141
% of sales	46.2	%	36.8	%	39.8	%	9.9	%	42.9	%	28.3	%	38.7	%	41.1	%	36.8	%	30.3	%
Change in Working Capital	0		14		(22	)	31		1		(12	)	(2	)	(7	)	(12	)	18
Income Taxes Paid	0		0		0		(6	)	0		(3	)	(3	)	0		(6	)	(12	)
Capital Expenditures	(5	)	(6	)	(4	)	(5	)	(5	)	(10	)	(7	)	(16	)	(22	)	(27	)
Other Adjustments	(4	)	19		(0	)	8		6		8		(2	)	14		13		20
Cash Flow Available for Debt Service	45		68		9		39		55		16		31		123		102		140
Summary Balance Sheet
Cash & Equivalents	60		27		14		11		14		16		29		14		29		29
Senior Unsecured Notes, due Jun-2036	211		206		215		211		207		200		203		215		203		203
Senior Unsecured Notes, due Jul-2014 (Curtis Palmer)	190		190		191		190		190		190		190		191		190		190
Senior Unsecured Notes, due Aug-2015 (USGP)	150		150		150		150		150		150		150		150		150		150
Senior Unsecured Notes, due Aug-2017 (USGP)	75		75		76		75		75		75		75		76		75		75
RCF due 2012	0		0		0		0		0		0		0		0		0		0
Total Debt	625		621		632		626		622		615		619		632		619		619
Net Debt	566		594		617		615		608		599		590		617		590		590

1. Revenue: APLP’s revenue is impacted by weather-related seasonality. Revenues are generally higher in the first and fourth quarters due to increased waste heat availability. The second and third quarters may vary by generation at APLP’s hydro facilities because of variations in precipitation and/or snow melt. For example, there was a decrease in Q3-2012 because of lower water levels at our Curtis Palmer and Mamquam hydro facilities. Further, there was a decrease in Q2-2013 because of dry weather.

2. Cost of Fuel: Non-cash adjustments for the reclassification of accumulated other comprehensive income to fuel expense related to fuel contracts accounted for as hedges were recorded in the fourth quarter of 2012.

3. O&M Expense: O&M expense fluctuates from quarter-to-quarter primarily due to the timing of maintenance outages. These maintenance costs are typically expensed whereas the cost of major overhauls are capitalized on an IFRS basis.

4. Change in Working Capital: Working capital fluctuates primarily due to the timing of collections of accounts receivable and payments of accounts payable and other accrued liabilities.

5. Capital Expenditure: The increase in capex in Q2-2013 and Q3-2013 is largely driven by the cost of replacing the Curtis 4 generating units referred to in the CIM dated 01-Feb-2014.

6. Other Adjustments: Other adjustments generally include one time cash related items such as asset sales proceeds or transaction related costs.