Blackstone to Buy Maine Gas Pipeline After BlackRock's 2024 Deal

By Daniel Okafor

Blackstone Infrastructure funds agreed on Nov. 10 to acquire the Portland Natural Gas Transmission System, a Maine pipeline that carries gas from Canadian and Appalachian supply basins.

The purchase price was not disclosed. Blackstone said PNGTS carries gas from the “Canadian and Appalachian supply basins.” That statement explains why the deal matters to Marcellus and Utica producers: some of their gas travels through PNGTS, although it goes the long way around through Canada.

What changes in the ownership?

Under the signed agreement, Blackstone Infrastructure funds will buy PNGTS from funds run by Global Infrastructure Partners and Morgan Stanley Infrastructure Partners. GIP now sits within BlackRock, placing one seller group inside the company that acquired the system in 2024.

Blackstone’s announcement, as described in the report, gives no purchase price, closing date, financing structure or regulatory condition. It also gives no operating commitment, capacity change or contracted-volume detail.

The announced deal changes ownership. It does not sanction drilling, expand the pipeline or create a new gas supply agreement.

BlackRock acquired PNGTS in 2024, according to the report, and the earlier transaction carried a reported $1.14 billion price. The prior MDN coverage used Darth Vader for BlackRock and called it “the evil BlackRock.” That language belonged to the earlier coverage, not the parties’ deal language.

For scale, $1.14 billion equals about $3.12 million per day if spread across 365 days. That is arithmetic, not a tariff estimate, operating-cost figure or cash-flow forecast.

A current sale price would allow a comparison with the 2024 acquisition basis. Without that price, the source’s presentation of the move as BlackRock cashing out remains a characterization rather than a measurable return.

Takeaway: The disclosed change concerns the owner, not pipeline operations.

Why do Marcellus and Utica producers care?

PNGTS sits in Maine and carries gas from Canadian and Appalachian supply basins, according to Blackstone’s description. The report says Marcellus and Utica gas can travel through the system by going the long way around through Canada.

That makes the pipeline relevant even to producers with no direct Maine exposure. PNGTS provides an existing path for gas associated with those basins to move through a Canadian route.

No volume, capacity, tariff or available-capacity figure appears in the announcement excerpt. The source therefore cannot support a claim that the route is expanding or contracting.

Nothing in the disclosed deal indicates a near-term change in flows. The named change concerns the owner, not the commodity.

Takeaway: Marcellus and Utica gas matters because Canada provides the route.

What does the undisclosed price obscure?

A disclosed price would provide the first hard check on valuation. It would also allow comparison with the $1.14 billion 2024 acquisition, subject to any difference in the assets or interests covered by the two transactions.

The missing number blocks an assessment of implied valuation, financing risk, expected return or investment performance since 2024. It also prevents a calculation of how proceeds divide between the seller groups.

The source does not disclose exact capital commitments, a debt package or Blackstone’s portfolio rationale. Disclosure can be selective. Readers still have an arithmetic gap.

Takeaway: No price means no defensible valuation or return calculation.

What should readers watch next?

The immediate watch items are the purchase price, closing timetable and any conditions attached to the sale. A later operating update would matter if it changes access, capacity or service terms for gas moving through Canada.

The defensible conclusion remains narrow. Blackstone Infrastructure has signed to buy PNGTS from GIP-managed funds now within BlackRock and Morgan Stanley Infrastructure Partners. The Maine system still carries gas from Canadian and Appalachian basins. The price remains undisclosed, and no route change has been announced.

Watch the closing terms first, then any operating disclosure. Price and conditions will establish the deal economics; service changes will establish the route effect.

Takeaway: The price and closing terms are the next useful numbers.