What is achievable below the scale where power purchase agreements are standard, and which parts of a PPA are worth copying at any size.
Search for a power purchase agreement for a mining operation and most of what comes back assumes a load measured in tens of megawatts, negotiated directly with a generator, running for a term long enough to justify the legal cost of drafting one. If your fleet draws a few megawatts, that document is not written for you, and it helps to understand why before spending time chasing it directly.
What a PPA is, and why small loads rarely get one
At its core, a power purchase agreement is a contract between a buyer and a generator to trade electricity directly, at agreed terms, outside the spot market. The generator gets a predictable buyer for its output, often for long enough to help finance the asset in the first place. The buyer gets a price it can plan around instead of one that moves with the market every settlement period. Both sides are trading a degree of flexibility for a degree of certainty, and the contract exists to define exactly how much of each.
That trade only makes sense to a generator when the volume is large enough to matter against the cost of negotiating and administering a bespoke contract, and when the buyer's load is stable and predictable enough for the generator to plan its own output around it. A generator with a handful of prospective buyers each wanting a small slice of capacity, on different terms, with different credit profiles, is looking at a lot of negotiation for not much aggregate volume. A single buyer able to commit a large, steady load over a substantial term is a different proposition entirely, and that difference in shape decides who gets a direct seat at the table more often than intent does.
The mismatch is mostly about the fixed cost of doing the deal at all, rather than about the buyer's standing. Legal drafting, credit assessment, metering and settlement infrastructure, and ongoing contract administration cost roughly the same whether the agreement covers two megawatts or two hundred. A generator's economics work when that fixed cost is spread across a large enough volume, and a small load simply does not clear that bar on its own, regardless of how attractive the buyer looks otherwise.
There is also a credit dimension. A PPA is a long-term commitment, and a generator financing a new asset around it is relying on the buyer's ability to pay for the length of the term. An established industrial buyer with a balance sheet and an operating history is a known quantity in a way that a newer mining operation, however well run, often is not yet. That is not a judgement on the operation, it is a function of how young the industry still is relative to the counterparties generators are used to underwriting.
The paths that exist instead
That does not shut a small load out of everything a PPA offers, only out of direct access to one at that scale. A few paths achieve pieces of the same thing.
Hosting through an operator is the most common route in practice. A host aggregating demand across many customers can reach the volume a generator will negotiate with, and can pass some portion of that pricing structure through to individual customers via the hosting agreement itself, without each customer needing its own contract with a generator. Ask about this directly rather than assuming it either exists or does not.
A retail supply contract with a utility, rather than a generator, is another route, and at small scale it is often the more realistic one. Utilities routinely offer structured products (fixed-term, partially indexed or time-of-use) that borrow some of the predictability of a PPA without requiring the volume a generator-direct deal does. It is a different counterparty and a different risk profile, but the commercial shape can end up similar.
Aggregation among multiple small buyers is a third path, and the least common in practice because it requires coordination that does not happen by itself. A broker or intermediary pooling several small loads into one volume a generator will engage with is structurally the same idea as hosting aggregation, arranged by a third party rather than by the site operator.
What to copy regardless of scale
Even without direct access to a PPA, several of its structural elements belong in whatever agreement you do sign, hosting or otherwise, because they solve the same problem at any size.
A defined price mechanism is the first. A PPA states plainly what is fixed, what floats, and against what index. A hosting or supply agreement that only quotes a single blended rate, without saying which components of it can move, is not offering the same clarity, and that gap should be closed before signing rather than after the first indexed invoice arrives. Our piece on industrial power pricing goes through how a rate breaks down.
A defined delivery profile is the second: whether the power committed is firm, meaning available on demand up to the contracted level, or interruptible, meaning subject to curtailment under stated conditions. This distinction sits at the centre of most PPAs and is just as relevant in a hosting contract, where it is often left implicit rather than stated. Our piece on firm and interruptible power covers what each commitment means in practice.
A stated term and exit mechanism is the third: how long the pricing holds, and what happens if either side wants out before it ends.
The risks that come with the commitment
The predictability a PPA offers is not free, and the same trade-off shows up in scaled-down form wherever these elements appear. A take-or-pay structure, where you commit to paying for a volume of power whether or not you consume it, protects the seller's economics and shifts risk onto you if your own load ever falls below the committed level, for instance during a hardware refresh or a temporary curtailment of your own operations. Ask directly whether any volume commitment in your agreement is a minimum, a fixed obligation, or simply an estimate.
There is also an accounting dimension to flag, without pretending to give accounting advice: a long-term power commitment with fixed payments regardless of usage can, depending on its terms and on the accounting standards that apply to your business, be treated differently on a balance sheet than a straightforward variable-rate contract. Whether that matters to you depends on your own structure, and it is a question for your accountant rather than for this piece, but get it answered before signing a multi-year commitment rather than after.
What to ask, whoever you are negotiating with
A short set of questions gets at the substance of any of the paths above, whether you are talking to a host, a utility, or a broker:
- Is the price fixed, indexed, or a mix, and against which components specifically?
- Is the power firm or interruptible, and under what conditions can it be curtailed?
- Is there a volume commitment, and what happens if your actual usage falls below it?
- What is the term, and what does exiting early cost either side?
- If this is arranged through aggregation, what happens to your terms if other participants leave the pool?
Getting clear answers to these does not require the scale a direct PPA assumes. It requires asking the same questions a much larger buyer would ask, of whichever counterparty you are negotiating with.
Our hosting rate page applies the same breakdown to a hosting rate per kilowatt hour and shows what sits inside our base rate.
