Plains All American expands Rockies network with $585m Silver Creek acquisition

Plains All American Pipeline L.P. has agreed to acquire Silver Creek Midstream’s Powder River Basin crude oil assets for approximately $585 million in cash, expanding its Rockies gathering network and increasing direct connectivity to producers in one of the company’s targeted growth regions. The assets include approximately 600 miles of gathering and transmission pipelines, more than 350,000 barrels per day of operating capacity and roughly 1.2 million barrels of storage. Silver Creek also brings a 49% non-operated interest in the Powder River Gateway joint venture, including the Iron Horse and Powder River Express systems. Plains expects the transaction to close during the fourth quarter of 2026, subject to customary conditions and antitrust clearance.

The acquisition is supported by approximately 915,000 dedicated acres, long-term acreage dedications and minimum volume commitments, with a weighted-average contract tenor exceeding eight years. Current throughput is about 125,000 barrels per day, giving Plains a sizable existing revenue base while leaving meaningful unused capacity across the acquired infrastructure. Management says the Powder River Basin contains more than 20 years of remaining drilling inventory at current activity levels, creating potential for future volume growth without requiring Plains to build an entirely new system from the ground up.

Silver Creek adds 600 miles of pipelines and deeper producer connectivity in the Rockies

Silver Creek operates one of the larger integrated crude oil gathering systems in Wyoming’s Powder River Basin. Its network connects directly with the Guernsey and Fort Laramie hubs, providing producers access to infrastructure already linked with Plains All American Pipeline’s broader Rockies network and long-haul routes toward Cushing, Oklahoma.

That connectivity is central to the strategic rationale because Plains is not buying an isolated group of pipelines. The company is adding gathering infrastructure that can feed volumes into assets it already owns, potentially increasing utilization across several parts of the network and allowing Plains to earn revenue at multiple stages as crude moves from the wellhead toward larger transportation systems and market hubs.

The system currently handles approximately 125,000 barrels per day against more than 350,000 barrels per day of total operating capacity. While not all unused capacity will necessarily be filled, the difference creates room for production growth without immediately requiring proportionate new pipeline investment, which can improve incremental returns if producers increase drilling activity.

Plains will also acquire approximately 1.2 million barrels of operational storage capacity. Storage adds another layer of flexibility because it can help producers and pipeline operators manage differences between field production, pipeline nominations and downstream market demand while supporting optimization opportunities across an integrated network.

The 49% non-operated interest in Powder River Gateway further expands Plains’ exposure without requiring it to own every asset outright. The joint venture includes Iron Horse and Powder River Express, providing additional transportation infrastructure that complements the gathering and storage network being acquired from Silver Creek.

Long-term contracts reduce volume risk while Plains targets returns above its cost of capital

The contractual structure makes the acquisition more attractive than an equivalent system dependent entirely on spot volumes. Approximately 915,000 acres are dedicated to the network under long-term agreements and minimum volume commitments, while the weighted-average remaining contract term exceeds eight years.

Those arrangements can reduce cash-flow volatility by tying producer acreage and minimum volumes to the system even when commodity prices fluctuate. Midstream businesses still face indirect commodity exposure because prolonged weak oil prices can eventually reduce drilling and production, but contractual protections generally make earnings less sensitive than those of upstream producers.

Plains Chairman, Chief Executive Officer and President Willie Chiang said the transaction fits the company’s internal requirement for returns approximately 300 to 500 basis points above its cost of capital. That target provides a useful benchmark for investors, although Plains did not disclose expected annual EBITDA from the acquired assets or a transaction multiple that would allow an independent calculation of the projected return.

The absence of a disclosed EBITDA contribution means investors will need to watch future guidance for clearer evidence of accretion. The $585 million price appears strategically manageable relative to Plains’ size, but the financial attractiveness ultimately depends on acquired cash flow, realized synergies, future throughput and any additional capital required to support producer growth.

Plains expects commercial and operational synergies from connecting Silver Creek with its existing Rockies platform. Those benefits could include higher long-haul volumes, better storage utilization and more attractive bundled transportation services for producers, although management has not quantified the amount or timing of the expected synergies.

Plains enters the acquisition with lower leverage after a major Canadian asset sale

The balance-sheet backdrop strengthens Plains’ ability to pursue the transaction. Second-quarter adjusted EBITDA attributable to Plains All American Pipeline reached $738 million, up 10% from $672 million a year earlier, while crude oil segment adjusted EBITDA increased 19% as higher volumes and the earlier Cactus III acquisition supported performance.

Plains also reported a pro forma leverage ratio of 3.3 times at the end of the second quarter after using proceeds from the sale of its Canadian natural gas liquids business to reduce debt by approximately $2.9 billion. That placed leverage toward the lower end of management’s target range of 3.25 to 3.75 times, creating additional capacity for disciplined acquisition spending.

The Canadian transaction materially changed the company’s portfolio by reducing exposure to natural gas liquids and increasing the relative importance of crude oil transportation. Plains is now redeploying some of that financial flexibility into a business that directly strengthens its existing crude oil network rather than expanding into an unrelated segment.

Capital spending is also rising organically. Plains increased its 2026 growth capital budget to approximately $400 million to $450 million from the previous estimate of roughly $350 million, with investment directed toward Permian long-haul, Canadian gathering and Permian gathering projects. Management expects several of those projects to begin contributing to EBITDA during 2027.

The Silver Creek transaction therefore adds acquisition-driven growth on top of an already elevated organic capital program. The combined spending increases execution requirements, but Plains enters the period with meaningfully lower leverage than it carried before the Canadian divestiture.

$1.5 billion junior-note refinancing reshapes the capital structure ahead of the acquisition

Plains has also been altering the composition of its financing. On September 9, the company priced $1.5 billion of junior subordinated notes, consisting of $700 million of 6.75% Series A notes and $800 million of 7% Series B notes, both due in 2056.

The proceeds, together with cash and commercial-paper borrowings, are being used to redeem Plains’ outstanding Series A and Series B preferred units. The transaction replaces preferred equity with long-dated junior subordinated debt, simplifying the capital structure while preserving a security that retains some equity-like characteristics because it ranks below senior debt.

The new notes carry relatively high coupons, so the move should not be viewed simply as cheap refinancing. The benefit instead comes from eliminating preferred securities, extending the maturity profile and potentially improving flexibility as Plains enters 2027 with new growth projects and the Silver Creek acquisition.

Management explicitly connected the Silver Creek purchase with the recent balance-sheet restructuring, saying the combination provides additional optionality heading into 2027. That framing suggests Plains wants investors to view the acquisition not as a reversal of recent deleveraging but as a selective redeployment of financial capacity after strengthening its balance sheet.

The company continues to pay an annualized distribution of approximately $1.67 per unit, which represented a yield of about 7% around the second-quarter earnings release. Maintaining distribution coverage while funding higher capital spending and acquisitions will therefore remain an important consideration as Plains balances growth against income-oriented investor expectations.

Plains All American shares enter the deal after a strong 2026 rally

Plains All American Pipeline units closed September 15 at $25.77 and had gained approximately 43% during 2026 through that session, while the one-year increase was close to 49%. The units were also trading near the upper end of their 52-week range of $15.69 to $26.39, indicating that investor expectations had already improved substantially before the Silver Creek transaction was announced.

That strong performance raises the standard for future acquisitions because investors are no longer valuing Plains as a deeply discounted midstream recovery story. Management now needs new investments to generate enough incremental cash flow to justify both the purchase price and the broader rise in valuation.

The acquisition itself is unlikely to transform a company with an equity market value above $18 billion, but it strengthens a region where Plains already has infrastructure and relationships. Buying established assets with significant unused capacity can be economically attractive if producer volumes continue increasing because incremental barrels can generate higher returns without requiring a corresponding increase in fixed investment.

The risk is that Powder River growth develops more slowly than management expects. Oil-price weakness, changes in drilling budgets, regulatory restrictions or producer consolidation could reduce the pace at which unused capacity is filled, while integration synergies may take longer to materialize than projected.

Still, the eight-plus-year average contract tenure and acreage dedications provide more protection than a purely volume-sensitive acquisition. Plains is effectively paying for existing cash flow, long-term customer commitments and the option to benefit from additional basin growth through infrastructure that already exists.

The fourth-quarter closing will shift attention toward how Plains incorporates the acquired system into 2027 guidance. Investors should watch for management to disclose expected EBITDA contribution, synergy assumptions, capital requirements and any changes to leverage targets once the assets are consolidated.

Key takeaways from Plains All American’s $585 million Silver Creek acquisition

• Plains All American Pipeline agreed to acquire Silver Creek Midstream’s Powder River Basin assets for approximately $585 million in cash.
• The acquisition includes roughly 600 miles of gathering and transmission pipelines and more than 350,000 barrels per day of operating capacity.
• The system currently transports approximately 125,000 barrels per day, leaving meaningful capacity for future producer growth.
• Plains will also acquire approximately 1.2 million barrels of storage and a 49% interest in the Powder River Gateway joint venture.
• Around 915,000 acres are dedicated to the system through long-term contracts and minimum volume commitments.
• Weighted-average contract life exceeds eight years, providing greater cash-flow visibility than purely spot-volume infrastructure.
• Plains ended the second quarter with pro forma leverage of 3.3 times after using Canadian asset-sale proceeds to reduce debt by about $2.9 billion.
• The company recently issued $1.5 billion of junior subordinated notes to redeem Series A and Series B preferred units.
• Plains units had gained roughly 43% during 2026 through September 15 and were trading near their 52-week high before the acquisition announcement.
• The key next metrics are acquired EBITDA, realized synergies, leverage after closing and whether Powder River throughput moves closer to available capacity.