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Ares Management has paid $305 million for 49 percent of three Oklahoma wind farms. Divide one figure by the other and the price looks like $0.61 million per MW, among the cheapest US wind deals of the past two years. That arithmetic is wrong, and the error is almost exactly double.
Key takeaways
- Ares Management, through its Ares Infrastructure funds, acquired a 49 percent stake in a 500 MW operational wind portfolio in Oklahoma from TransAlta Corp for $305 million, announced on 22 October 2026.
- The portfolio comprises the 100 MW White Rock West and 200 MW White Rock East projects in Caddo County and the 200 MW Horizon Hill project in Logan County, Oklahoma, all three of which reached commercial operation during 2024.
- $305 million for 49 percent implies an enterprise value of about $622 million for the full portfolio, or $1.24 million per MW, against a median of $1.03 million per MW across the 13 priced US operational wind asset deals Enerdatics records since the start of January 2024.
- The portfolio is expected to generate adjusted EBITDA of $60 million in 2026, of which $29 million is attributable to the acquired 49 percent, implying an enterprise value of about 10.4 times 2026 EBITDA.
- All 500 MW is contracted to two buyers: Amazon holds virtual PPAs covering White Rock East to the second quarter of 2039 and White Rock West to the fourth quarter of 2038, and Meta holds one covering Horizon Hill to the second quarter of 2044.
Why does a 49 percent stake price differently from the whole portfolio?
Because the consideration buys a share of the owning entity, not a share of each turbine, while the headline capacity describes all of it. To compare a minority purchase against nameplate capacity, the price has to be grossed up to 100 percent first. Divide $305 million by 0.49 and the implied enterprise value for the whole 500 MW is about $622 million, or $1.24 million per MW.
The difference is not academic. Across the priced US operational wind asset deals in Leap since January 2024, the lower quartile sits at $0.68 million per MW and the upper quartile at $1.24 million. The ungrossed figure of $0.61 million would place this transaction below the bottom quartile. The grossed-up figure places it exactly at the top quartile. One missing division moves the same deal from one end of the range to the other, which is why minority stakes are where per-MW benchmarks most often go wrong.
What is Ares buying if TransAlta keeps running the assets?
Contracted cash flow without operational control. TransAlta retains 51 percent and keeps operational oversight under a long-term asset management agreement, so Ares takes an economic interest and a fee-paying relationship rather than a role in running the wind farms. Ares Infrastructure Equity has described the purchase as fitting its focus on contracted essential infrastructure.
What makes the cash flow durable is the contract stack, and it is unusually complete. A virtual power purchase agreement is a financial contract that settles the difference between a fixed price per MWh and the market price at the project's grid node, so the generator's revenue per unit is fixed while the electricity is still sold into the wholesale market. Here the output goes into the Southwest Power Pool at the relevant pricing nodes; when SPP prices fall below the contract price the corporate buyer pays TransAlta the difference, and when they rise above it TransAlta refunds it. Volume risk and nodal basis risk stay with the owner, but price risk does not.
The tax side is contracted too. TransAlta signed a 10-year production tax credit transfer agreement in February 2024 covering about 80 percent of the expected credits from these projects with an AA- rated counterparty, then a second in June 2024 covering the remaining 20 percent with an A+ rated counterparty, with the credits expiring in 2034. Enerdatics covered the first of those credit transfers over White Rock and Horizon Hill when it was announced. By the time Ares arrived, the power, the environmental attributes and the tax credits had all been sold forward to investment grade names.
Why sell half of a fully contracted portfolio at all?
To fund something else. Leap records the divestment as part of TransAlta's portfolio rotation strategy, monetising an investment in a geography it treats as non-core while keeping operational control and the management agreement that goes with it. The timing says the rest. Alongside this sale, TransAlta completed the $1 billion acquisition of Mountain Peak Power and Canyon Peak Power from Blackstone, including the assumption of $750 million of senior secured project-level debt. Those figures imply roughly $250 million of equity for the purchase, against $305 million raised from the stake sale.
Read that way, this is not a retreat from Oklahoma wind. It is a recycling trade in which a de-risked 2024-vintage asset raises cheap equity while the operator keeps the part of the business that earns fees. The assets best suited to that trade are the ones with nothing left to prove, which is also why they clear at the top of the pricing range rather than the bottom.
Enerdatics' data shows how little of the US wind market can be benchmarked at all. Of 31 US operational wind asset transactions recorded since January 2024, only 13 carry enough disclosure for a per-MW read, and those 13 span $0.44 million to $1.54 million per MW around a median of $1.03 million. Earnings disclosure is thinner still: three of the 31 carry an EBITDA figure, too few for a defensible multiple benchmark. The 10.4 times on this transaction is a fact about this deal rather than a ranking against peers, and Enerdatics flags it as such.
What does the deal signal for US wind M&A?
It signals that the minority stake with the operator retained has become the standard way to monetise contracted American wind. Ares used the same shape nine days earlier in the UK, taking a minority holding in Statera Energy's battery portfolio while Statera kept running it. The structure suits both sides: the seller keeps control and a fee stream, the buyer gets contracted cash flow without building an operating platform.
It also signals where the premium is going. Leap records 10 US operational wind asset deals so far in 2026 carrying $445 million of disclosed value, against 15 deals and $1.43 billion across the whole of 2024, so the count is holding up while disclosed value is not. The deals clearing at the top of the range share a profile: recent turbines, long-dated contracts with hyperscalers, tax credits already sold. Corporate demand underwrites that profile and is still being written at generous terms, as a recent South Dakota wind contract with Cargill showed. An uncontracted merchant wind farm on the same grid would not fetch $1.24 million per MW.
Frequently asked questions
What did Ares Management buy from TransAlta? Ares acquired a 49 percent stake in a 500 MW operational Oklahoma wind portfolio comprising White Rock West, White Rock East and Horizon Hill, for $305 million, announced on 22 October 2026.
What does the deal value the portfolio at per MW? Grossing $305 million up to 100 percent implies an enterprise value of about $622 million, or $1.24 million per MW, the upper quartile of priced US operational wind asset deals since January 2024.
Who buys the power from White Rock and Horizon Hill? Amazon holds virtual PPAs over White Rock East and White Rock West running to 2039 and 2038, and Meta holds one over Horizon Hill running to 2044, covering all generation and environmental attributes.
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