On October 6, Black Hills Corp. announced definitive agreements, effective September 30, to supply energy infrastructure and services for Google’s planned hyperscale data center campus in Cheyenne, Wyoming, with terms running through 2048. The numbers are the largest the Rapid City-based utility has ever attached to a single customer: a total resource mix of 2.7 gigawatts including reserve margins, $1.8 billion of new company-owned natural gas generation, and company projections of roughly $150 million in net income in 2030 and about $2.4 billion of unlevered free cash flow through 2048, net of the build cost.
The deal matters less for any single figure than for what it reveals about the evolving shape of the utility business. Black Hills is not simply selling kilowatt-hours to a large customer under a tariff. It is acting as an infrastructure partner: building generation through a non-regulated affiliate, managing a privately run microgrid of third-party resources, and collecting contracted fees for coordinating the portfolio. The growth engine here sits largely outside the traditional regulated model, which changes how the earnings, capital plan, and risks should be read.
The deal, in two pieces
The first piece is the grid-connected service. Black Hills will provide up to 590 megawatts of grid-connected energy service through company-owned generation and market energy. The bulk — 564 megawatts of nameplate capacity — will come from new natural gas generation the company plans to build at its existing Cheyenne Prairie Generating Station between 2027 and 2029. The remaining 26 megawatts will be supplied through market energy purchases and retail utility service under the company’s applicable industrial tariff. That 26-megawatt sliver is the part of the deal that looks like the traditional utility business. The rest does not.
The second piece is larger and more novel. Black Hills will manage the output of approximately 2.1 gigawatts of Wyoming-based, third-party contracted resources through a privately managed microgrid under the company’s Large Power Contract Service tariff. Most of the power serving the campus will not be generated by Black Hills at all; it will be contracted from other Wyoming suppliers, and Black Hills will coordinate grid operations, reliability services, and energy dispatch across that portfolio, earning microgrid management fees for doing so. Two framing details matter: the headline 2.7 gigawatt figure is a total resource mix that includes reserve margins — spare capacity held for reliability — not 2.7 gigawatts of delivered load, and it excludes additional transmission investments Black Hills says it anticipates on top of the generation build.
What Black Hills gets paid for
The economics rest on three distinct revenue streams. The first is the return on the $1.8 billion generation investment. Black Hills will construct and own the 564 megawatts through a non-regulated affiliate and earn a contracted return on that capital, beginning when construction starts in 2027. This is not rate-base earnings set by a commission in a rate case; it is a negotiated, contracted return with a single customer. That distinction is the most important structural fact in the announcement.
The second stream is the microgrid management fee: a negotiated rate based on a contracted minimum peak load that begins in 2027 and increases on a contractually defined ramp schedule, paid for coordinating the portfolio of contracted resources and market energy purchases. Fee income behaves differently from generation earnings: it requires little capital of its own, scales with the campus’s load rather than with steel in the ground, and compensates Black Hills for operational competence rather than balance-sheet capacity.
The third stream is the pass-through architecture. The company says the contract structures protect returns from inflation, interest rate volatility, and other cost pressures, and that debt costs are contractually passed through. This is meaningful de-risking: the two variables that most often break a fixed-price project — rising input costs and rising financing costs — are, as described by the company, pushed through to the customer rather than absorbed by the sponsor.
Against those streams, the company projects approximately $150 million of net income in 2030, the year the campus is expected to reach peak load, and approximately $2.4 billion of unlevered free cash flow through 2048, net of the $1.8 billion build. Unlevered free cash flow is cash generated before debt payments, and the “net of” phrasing matters: the $2.4 billion is what remains after the construction bill is paid, not in addition to it. Both figures are company projections, forward-looking statements subject to execution and regulatory risks, not guarantees. Beyond 2030, the company says it will continue earning management fees and a return on capital to be fully depreciated by 2048 — a long, declining tail rather than a permanent step-up.
The capital plan
The $1.8 billion build is large relative to Black Hills’ ordinary capital program, and the financing plan is, by the company’s own account, not yet settled. Black Hills says it expects to finance the investment through project-generated cash flow, debt, and other financing alternatives, with a focus on earnings accretion while maintaining solid investment-grade credit ratings. The company points to several features that give it flexibility: contractual pass-through of debt costs, a cash return on the investment during construction, and a risk-adjusted return on the capital. The phrase worth pausing on is “cash return during construction.” Regulated utilities typically earn an allowance for funds used during construction that accrues rather than pays; a cash return while building produces money rather than accounting entries during the capital-intensive phase.
Google has already put money in. Under the parties’ generation reservation agreement, Google provided $399 million of refundable advances for long-lead-time equipment — the turbines, transformers, and other components with the longest manufacturing queues — and Black Hills expects to reimburse those advances by June 30, 2027. The advance is not equity, not revenue, and not a subsidy; it is a refundable customer advance that accelerates procurement and will be repaid. What it signals is sequencing: the customer is funding the earliest, most schedule-critical purchases, which de-risks the construction timeline and reduces what Black Hills must carry on its own balance sheet in the first year.
Beyond generation, transmission is the open-ended part of the capital story. Black Hills says it anticipates additional transmission investment to serve the project and other regional large-load opportunities, describing it as upside to its current capital plan. Permits are partly in hand: the Robinson substation certificate was approved in May 2026 and an air quality permit in August 2026, while an industrial siting permit was filed in July 2026. On transmission, filings for a cost-adjustment mechanism and the South Cheyenne expansion are in, and a Wyoming transmission expansion certificate is expected in the fourth quarter of 2026.
The protections — and what they don’t cover
The most politically important commitment in the announcement is that Google bears all costs associated with serving the data center throughout the life of the project, so costs do not shift to existing retail customers. The agreements back that commitment with four protections the company names explicitly: cost pass-through mechanisms, full recovery of all generation capital investment over the contract term against stranded-asset risk, early termination provisions, and credit protections in the form of collateral and financial assurance requirements.
But protections are contractual, and contracts allocate risk rather than abolish it. The full-recovery provision protects against a stranded plant only to the extent the counterparty performs or the collateral proves adequate. The early termination provisions safeguard customers and shareholders only to the extent their formulas capture the true cost of an early exit — the unrecovered capital, the financing already raised, the equipment already ordered. The pass-throughs protect returns from inflation and rate volatility, but not the construction schedule from equipment delays, labor shortages, or permitting setbacks.
There is also the question of what sits outside the contract’s reach. The generation is gas-fired, so the asset’s 22-year life runs through a period in which emissions policy, gas prices, and the economics of competing supply will all move. The pass-throughs, as described, handle cost volatility; they do not answer what a gas plant built in 2029 is worth in a 2045 power system. The company’s answer, implicit in the structure, is that it does not need to: the plant is fully depreciated by 2048 and its capital is fully recovered over the contract term. The residual-value question that haunts so many contracted assets is answered in advance. Very little. That is a feature, not a bug, but it means the value is all in the contract years.
The concentration question
Every virtue of this deal has a mirror-image risk, and its name is concentration. A single customer, a single campus, a single 22-year contract. For a company that has spent decades diversifying across eight states and two fuels, the Google deal concentrates a large share of incremental growth in one counterparty’s computing demand. That is the bargain at the heart of data-center power as an asset class: investment-grade counterparties and contracted cash flows in exchange for binary exposure to one customer’s fortunes.
The concentration question lands differently because of who Black Hills is. The company has raised its dividend for 56 consecutive years — the second-longest track record in the electric and natural gas utility industry — most recently declaring a quarterly dividend of $0.703 per share, and management has pointed to a payout-ratio target of roughly 55 to 65 percent. A record like that is built on predictability: regulated earnings, diversified load, steady rate-base growth. The Google deal offers a different kind of predictability — contracted, not regulated — and a much faster growth rate. It does not threaten next year’s dividend; nothing in the announcement suggests that. It does ask whether a company whose identity is steady, diversified, regulated income is comfortable letting a growing share of its earnings come from one negotiated contract.
The concentration question is further complicated by the merger. Black Hills and NorthWestern Energy announced a tax-free, all-stock merger of equals in August 2025, approved by both sets of shareholders in April 2026, with the combined company to be called Bright Horizon Energy and closing expected in the second half of 2026 subject to remaining conditions, including Montana regulatory approval. If the merger closes on schedule, the deal’s economics will land inside a larger combined company — which dilutes the concentration somewhat, while also layering integration execution on top of project execution.
Reading it like an underwriter
On standard underwriting questions, the deal scores well. Counterparty quality: Google is among the strongest corporate credits in the world, and the collateral and financial assurance requirements add a further layer. Contract tenor versus asset life: the contract runs to 2048 and the asset is fully depreciated by then, so no residual-value assumption is doing quiet work in the valuation. Cost pass-through: inflation and interest-rate risk are, as described, passed through rather than retained. Customer funding: $399 million of advances against long-lead equipment, repaid within roughly eight months, de-risks the schedule’s critical path.
The weaker scores are on the questions contracts cannot answer. Remarketability: if Google’s plans for the campus changed, a gas plant in Cheyenne built for one customer has no obvious second user at the same scale, and the microgrid’s third-party resources are contracted to the project, not to the grid at large. The early-termination provisions are meant to cover exactly this scenario, but a termination payment is only as good as the formula behind it, which the announcement does not disclose. Regulatory completion: several transmission filings are still pending, and transmission is the piece of the project with the longest history of delay in this industry. And execution: $1.8 billion of gas construction across three years will test a company whose recent large builds have been far smaller.
There is also a useful external benchmark. The same week Black Hills announced the Cheyenne deal, Google signed a separate 3.59-gigawatt power contract with Constellation Energy, which committed more than $4.3 billion to its generation fleet, according to Reuters. Cheyenne is one piece of a procurement program running at a scale most utilities never see from a single customer. That cuts both ways: it confirms Google’s demand is real and diversified across suppliers, and that Black Hills is competing for a customer’s attention against much larger counterparties.
What to watch
The milestones that will convert this announcement into earnings are, in order: the financing package, which the company has yet to settle; the pending transmission certificates; the merger closing, expected in the second half of 2026; reimbursement of the $399 million in advances by June 30, 2027; construction start in 2027; first energy service in late 2027; and the ramp to peak load in 2030, when the $150 million net income projection is tested.
The bottom line
Black Hills has signed the most consequential deal in its history, and it has structured it with unusual care: contracted returns, pass-throughs, full capital recovery, customer-funded long-lead equipment, and a microgrid fee stream that monetizes operational skill rather than balance-sheet brute force. It is being paid like an infrastructure partner — with contracted, fee-enhanced earnings that begin during construction. The price of that positioning is concentration: one customer, one campus, one contract carrying a large share of the company’s growth for the next 22 years, inside a company that is itself about to merge and rename. Whether it reads, in 2030, as the deal that modernized Black Hills or the deal that concentrated it will depend on execution the company has not yet had to deliver.