Property, Plant and Equipment

6 Months Ended

Jun. 30, 2014

Property, Plant and Equipment

4. Property, Plant and Equipment

The following table sets forth the Company’s property, plant and equipment by classification (in thousands).

		June 30,			December 31,
		2014			2013
Construction in progress	-	$	67,711		$	66,033
Plant machinery and equipment	10 years		11,009			11,009
Site improvements	10 years		7,009			7,007
Lab equipment, furniture and fixtures and vehicles	5 years		6,369			6,303
Demonstration plant	2 years		3,597			3,597
Buildings	10 years		2,543			2,543
Computer, office equipment and software	3 years		1,437			1,437
Leasehold improvements, pilot plant, land and support equipment	2 - 5 years		2,143			2,105
Total property, plant and equipment			101,818			100,034
Less accumulated depreciation and amortization			(18,114	)		(16,559	)
Property, plant and equipment, net		$	83,704		$	83,475

Construction in progress includes $65.7 million at June 30, 2014 and December 31, 2013 related to the retrofit of the Agri-Energy Facility to isobutanol production.

Prior to the first quarter of 2014, the Company capitalized interest on its secured debt associated with its qualifying assets, which related to the retrofit of the Agri-Energy Facility that was actively being developed. The Company did not capitalize any interest during the three and six months ended June 30, 2014 as there were no qualifying assets which were actively being developed. The Company capitalized $0.1 million of interest during the three and six months ended June 30, 2013, and $1.8 million of interest from Inception to June 30, 2014.