5.Inventories

Inventories consisted of the following (in thousands):

	December 31,		December 31,
	2016		2015
Solar energy systems held for sale	$	10,540	$	121
Photovoltaic installation devices and software products		745		510
Total inventories	$	11,285	$	631

Solar energy systems held for sale are solar energy systems under construction that have yet to be interconnected to the power grid and that will be sold to customers. Solar energy systems held for sale are stated at the lower of cost, on a FIFO basis, or market. Photovoltaic installation devices and software products are stated at the lower of cost, on an average cost basis, or market.