NOTE 4 - INVENTORY

Our inventory consists of three major classes: spare parts, fuel, and warehouse inventory. Spare parts and warehouse inventories are stated at the lower of cost or market based on the first-in, first-out method of accounting. Our fuel inventory is based on the average cost method of accounting. We have broken down the inventory balances as of June 30, 2015 and December 31, 2014 by major class in the following table:



(All Amounts in Thousands)		June 30,		December 31,
Inventory Classes		2015		2014
Spare Parts Inventory	$	3,420	$	3,253
Fuel Inventory		2,879		3,967
Warehouse Inventory		2,864		2,540
Total	$	9,163	$	9,760