NEW YORK (AP) — Dominion Resources, Duke Energy and other partners are proposing a $5 billion natural gas pipeline to connect the Southeast with the prodigious supplies of natural gas being produced in Pennsylvania, Ohio and West Virginia.

Gas is being relied upon to generate more of the nation’s electricity in recent years because enormous new domestic supplies have drastically lowered its price and because natural gas burns cleaner than the nation’s other most important fuel for electric power, coal.