Conversion Factors

To convert from a	To a	You need to
ccf: 100 cubic feet-Standard measurement of gas usage	btmcf	Divide by 10
btmcf: The point at which the gas is used	mcf	Divide by the shrink percent
mcf: Measurement of gas usage prior to line loss, equal to 1,000 cubic feet	dth	Multiply by the BTU factor
dth: Measurement of gas usage which includes the heat value of the gas	the dth volume * (NYMEX Settle + Contract Basis) will give you your total Commodity Charge for the month. See Note 1

Note 1: The monthly gas usage on your Vineyard invoice may vary slightly from the usage on your NFG invoice due to the fluctuations in meter read cycles. VOG invoices customers on a monthly basis (1st of the month to EOM), whereas, NFG invoices transportation customers based on the meter read cycle as determined by NFG (i.e. If your meter is read on the 15th, your usage will be based on the read taken on the 15th of the previous month and the 15th of the current month). Please contact your Marketing Representative if you should have any questions regarding your billing cycle.

NFGD Transportation Shrinkage Rates

Reference: National Fuel Transportation Service Shrinkage Rates

The following shrinkage rates are applicable to New York and Pennsylvania marketers, producers and suppliers participating in Nationa Fuel Transportation Services program.

Division	Shrinkage Rate	Effective
New York	0.74%	01/01/2025
Pennsylvania	0.15%	08/01/2013

Shrinkage rates are driven by the regulatory process and are only changed as required.

NFGD BTU Factors

Reference: National Fuel Transportation Historical Btus for Conversion of Dths to Mcfs

District	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
NY 2025 Dth/Mcf	1.034	1.033	1.032	1.032	1.033	1.033	1.032
PA 2025 Dth/Mcf	1.045	1.046	1.047	1.046	1.049	1.046	1.046
NY 2024 Dth/Mcf	1.033	1.033	1.032	1.033	1.034	1.033	1.033	1.031	1.03	1.029	1.031	1.033
PA 2024 Dth/Mcf	1.047	1.048	1.046	1.051	1.055	1.049	1.047	1.05	1.049	1.046	1.044	1.047