The Counterparties Are Better Credits Than VistraNarrow moat

A power purchase agreement is a promise to pay for two decades, and its value depends entirely on the promiser. Vistra has done well here: Amazon and Meta are among the strongest corporate credits in existence, with net cash positions and cash generation that dwarf the contracts.

That is not incidental — it is a large part of why these agreements are worth what they are. A twenty-year contract with a marginal counterparty is worth a fraction of the same contract with a company that will obviously still exist and still be able to pay. Financing markets treat the two completely differently, and a generator financing against contracted cash flows can borrow more cheaply against an investment-grade offtaker.

It also shifts the balance of the relationship in an interesting way. Vistra's stockholders' equity was $5,097 million at the end of 2025¹. Its counterparties are worth several hundred times that. In a renegotiation the leverage does not sit with the seller — except that the seller owns something the buyer cannot obtain elsewhere, which is the whole reason the contract exists.

There is a further consideration on the buyer's side that works in Vistra's favour. Both counterparties have public commitments about carbon-free power, and both need the attribute rather than just the electrons. That makes these contracts harder to walk away from than a commodity supply agreement, because the substitute does not exist in the quantity required.

The exposure that remains is not credit. It is strategy: a hyperscaler that changes its mind about where it builds, or about how much compute it needs, has options a power plant does not.