Mont Belvieu ethane prices peaked in mid-July at almost 40 c/gal but quickly fell back to around 26 c/gal where they remained until late August.  But prices have been creeping higher lately, closing at 31 c/gal yesterday according to OPIS (see left-hand chart below).   Like the rally in July, the increase in ethane can’t be blamed on natural gas.  Natural gas prices have been relatively flat which has pushed up the ethane to Henry Hub ratio to nearly 1.8x (see right-hand chart below).  So what is behind the recent strength in ethane prices?  Part of reason is likely higher petchem demand with ethylene prices rising to almost 21 c/lb.  In addition, Gulf Coast ethane exports have remained robust with Enterprise’s Morgans Point terminal and Energy Transfer's (Orbit J/V) Nederland terminal operating close to capacity.  U.S. ethane inventories are also on the low side which could be contributing to the run-up.  The increase in prices should incentivize more ethane recovery (less rejection) so the strength in ethane may be short-lived. 

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