Table C8. Assumed Lower 48 Unconventional Gas Resource Base as of January 1, 2015

Table C8. Assumed Lower 48 Unconventional Gas Resource
Base as of January 1, 2015
(Trillion Cubic Feet)

Resource	NPC Study	EIA Study
Resource	NPC Study	Accelerated Depletion Case	Reference Case
Tight Gas	230	304	351
Coalbed Methane	74	68	86
Gas Shales	52	58	65
Subtotal	356	420	502
Growth of Tight Gas/Other Fields	98	^a—	^a—
Total	454	420	502
^aIncluded in EIA resource values for tight gas, coalbed methane, and gas shales. Sources: National Petroleum Council, Natural Gas: Meeting the Challenges of the Nation’s Growing Natural Gas Demand (Washington, DC, December 1999); and Energy Information Administration, Office of Integrated Analysis and Forecasting, National Energy Modeling System runs OGBASE.D051200A and OGDEPL.D051200A.