Consolidated Statements of Operations (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Oct. 31, 2015	Oct. 31, 2014	Oct. 31, 2015	Oct. 31, 2014
Revenues	$ 494,412	$ 1,747,788	$ 600,078	$ 3,288,316
Cost of revenues	$ 494,412	1,998,076	$ 600,078	3,965,240
Gross loss		(250,288)		(676,924)
Operating expenses:
Product development costs	$ 1,177,656	1,224,487	$ 3,660,444	1,144,432
Selling, general and administrative costs	1,821,993	2,708,878	3,728,938	5,831,850
Total operating expenses	2,999,649	3,933,365	7,389,382	6,976,282
Operating loss	(2,999,649)	(4,183,653)	(7,389,382)	(7,653,206)
Interest income (expense), net	3,712	$ 3,424	8,835	(55,196)
Other income (expense), net	(8,080)		242,927	185,000
Foreign exchange loss	(24,801)	$ (216,249)	(5,842)	(221,907)
Net loss	(3,028,818)	(4,396,478)	(7,143,462)	(7,745,309)
Less: Net (profit) loss attributable to the noncontrolling interest in Ocean Power Technologies (Australasia) Pty Ltd.	2,057	26,784	(45,340)	92,863
Net loss attributable to Ocean Power Technologies, Inc.	$ (3,026,761)	$ (4,369,694)	$ (7,188,802)	$ (7,652,446)
Basic and diluted net loss per share (in dollars per share)	$ (1.71)	$ (2.50)	$ (4.08)	$ (4.38)
Weighted average shares used to compute basic and diluted net loss per share (in shares)	1,773,978	1,748,156	1,762,805	1,747,312