During 2015, CONSOL Energy Inc. added 934 Bcfe (net to CONSOL) of proved reserves through extensions and discoveries.
As of December 31, 2015, total proved reserves were 5.6 Tcfe, which included 583 Bcfe, or 10.3%, of oil, condensate, and liquids. Marcellus Shale reserves account for 369 Bcfe, or 14.4%, of these heavier hydrocarbons.
CONSOL Energy replaced 284% of its 2015 production, when considering increases from extensions and discoveries of 934 Bcfe. Production in 2015 was 329 Bcfe (net to CONSOL).