11. DEFERRED TAX

Deferred tax asset was a result of the accrued maintenance cost on power generation systems that can be deducted for tax purposes in the future; and difference between tax and accounting basis of cost of fixed assets which was capitalized for tax purposes and expensed as part of cost of systems in the book. Deferred tax liability arose from the difference between tax and accounting basis of net investment in sales-type leases.

As of June 30, 2012 and December 31, 2011, deferred tax liability consisted of the following:

	2012			2011
Deferred tax asset — noncurrent (accrual of system maintenance cost)	$	38,317		$	33,146

Deferred tax asset — noncurrent (depreciation of fixed assets)		24,255,713			25,527,126
Deferred tax liability — noncurrent (net investment in sales-type leases)		(30,663,065	)		(31,948,809	)
Deferred tax liability, net of deferred tax asset – noncurrent	$	(6,369,035	)	$	(6,388,537	)
Deferred tax liability — current (net investment in sales-type leases)	$	(2,179,262	)	$	(1,624,665	)