Does a twelve-month energisation delay cost more than an eight per cent rent miss?
A rent miss is a permanent reduction in a growing stream; a delay is a year of full carry, funded by equity, sitting on top of a year of no income at all.
Yes, and the gap is measurable. On the illustrative 180 MW turnkey campus — $1.98 billion of cost, $215 million of stabilised net operating income, 60 per cent construction financing, a seven-year hold and a 7.75 per cent exit — the base case returns 18.56 per cent levered. An eight per cent rent miss takes it to 15.99 per cent, a fall of 257 basis points. A twelve-month energisation slip takes it to 14.56 per cent, a fall of 399. The delay costs 142 basis points more.
Where the delay money goes
The delay case is not a haircut on income. It is a year of full carry on a nearly fully drawn balance, followed by a year of income that never arrives. At 60 per cent loan-to-cost the drawn balance on this campus is $1,188 million. Twelve months of interest on that balance is $75 million in round terms — $74.8 million computed — which implies a construction rate of 6.3 per cent. Extended general conditions, insurance and overhead add roughly $20 million on top.
The cost of a twelve-month energisation slip on the illustrative campus.
Line
Amount
Additional construction interest on the drawn balance
$74.8 million
Extended general conditions, insurance and overhead
$20 million
Cost of the slip
$94.8 million
The interest rate here is not invented. It is taken out of the deal rather than out of the air: the delay figure and the drawn balance together fix it at 6.3 per cent, and the same rate then runs the whole model. A model built on the lender's actual rate reproduces the memo the lender is reading.
Who funds the $94.8 million matters as much as its size. Lenders do not enlarge commitments for delay, so the money comes from equity. The rent miss, by contrast, is absorbed inside a capital structure that is already in place.
The two misses side by side
Run both on the same model, with no rent escalation so that the comparison is like for like, and the ranking is stable.
Levered return under each case, flat rent, seven-year hold, 7.75 per cent exit.
Case
Levered return
Fall
Base case
18.56 per cent
—
Eight per cent rent miss
15.99 per cent
257 basis points
Twelve-month energisation slip
14.56 per cent
399 basis points
The reason the delay wins is structural rather than arithmetical. The rent miss is a permanent reduction in a growing stream. The delay is a year of carry funded by equity, plus a year of lost net operating income, plus every future dollar pushed one year further out, plus a year of a fifteen-year lease term consumed without collecting on it. And it carries a tail the rent case does not: a twelve-month slip is the kind of event that trips a lease outside date, and a delay that becomes a re-leasing problem is a different project.
The rent miss is understated in year one
There is a second-order point that cuts the other way and is worth pricing properly. An eight per cent rent miss is usually valued at first-year rent: eight per cent of $215 million is $17.2 million, capitalised at 7.75 per cent is $222 million of exit value. That figure assumes the shortfall never escalates.
A first-year shortfall is a shortfall in the rent that escalates. Seven years on, under a three per cent escalator, the shortfall at the exit is $21.2 million, and capitalised it is $273 million — twenty-three per cent larger. Price a rent miss at the exit, on the escalated rent, not in year one.
The escalator is worth stating in the same breath, because it moves the headline return more than most negotiators expect. On identical dirt, identical megawatts and identical capital, the levered return is 18.6 per cent with a flat lease and 22.6 per cent with a three per cent escalator. Net rent over a fifteen-year term is $281 million higher at three per cent than at two, or 7.5 per cent of the total, so matching a three per cent escalator with a two per cent one requires first-year rent of $112.93 per kW-month instead of $105.00 — $7.93 more. A tenant offering a dollar of first-year rent for a point of escalation is offering about a seventh of what it is asking for.
Sensitivities do not add. Take a twelve-month delay arriving, as delays do, with a five per cent cost overrun, an eight per cent rent miss and twenty-five basis points of exit cap widening. The four effects taken one at a time sum to 873 basis points; run together they cost 809 — 64 basis points less bad than the sum. The lesson runs in both directions: never add sensitivities to estimate a combined case, and never assume the combination is worse than the sum either.
What to do with it
Three things follow, and none of them are about rent.
Underwrite the date before the rent, and run the delay case as base-adjacent rather than as a stress case. On current equipment and interconnection timelines, delay is the modal outcome, not the tail.
Report the capital call as a share of committed equity, not as a dollar figure. The bare twelve-month slip is $94.8 million, which is 12.0 per cent of committed equity, or $527,000 per MW — a call most institutional partners fund without renegotiating. The correlated case is $197.6 million, or 24.9 per cent. Twelve per cent is a phone call; twenty-five per cent is a renegotiation.
Size the interest reserve to the base case plus meaningful float, and split contingency into construction, owner and escalation buckets. An underfunded reserve turns a schedule problem into a covenant problem.
And quote a levered return with its escalator attached. Four points of return sit between a flat lease and a three per cent one on the same asset, so a return quoted without its escalation assumption cannot be compared to anything.
The workbooks behind this article
Every figure above is a live formula in the free companion files for
The Data Center Development Handbook. Each workbook ends with a Checks sheet
setting the printed figure beside the computed one. No account and no email address.
At what wealth does a family office pay?A five-person office costs the same $2,442,000 at $100m as at $2bn. Against a tiered multi-family schedule the two curves cross exactly once.
Does an undrawn revolver count as liquidity?67.4567 per cent of the headroom, and it leaves at a fall in annual revenue of 8.4127 per cent — not the 13.3333 per cent the board deck implies.
Does supply chain finance count as debt?66,049,315 released, and leverage of 2.7622× or 3.1362× depending on which balance the test is asked of — the second is a breach at today's EBITDA.
Does the fulcrum move with enterprise value?A worked capital structure at three enterprise values. The break migrates from the first lien to the subordinated notes without a single document changing.
How many companies does a reserve pool defend?Holding pro rata to the Series D costs $14.76m per company. A $40m reserve defends 2.71 of forty — and 61 per cent of the cost is the last round.
How much room a 1.15x downside actually leaves79 basis points of margin. The leverage covenant fails first, five basis points before the coverage covenant the chapter reports on, and 4.6 per cent of EBITDA is the whole cushion.
How the GP catch-up is actually solvedMost write-ups state the catch-up formula then hardcode the answer. Set it as a solve and it moves on its own when the carry rate does.
How do you set a minimum cash balance?Three components, 124,596,281 in total — and the double count that turns a margin of 27,403,719 into an apparent shortfall of -3,988,281.
Is a 2/10 net 60 discount worth taking?An annualised 14.8980 per cent against a revolver at 4.50 per cent — worth 5,471,890 a year, and 0.3132 turns of reported leverage.
Should corporate debt be fixed or floating?78.1818 per cent of gross debt fixed, and a net floating exposure after cash of -608,000.00 — the proportion, not the instrument.
Six ways to state the same fund's return7.12 per cent, 18.04 per cent, or 1.323 times the public market — one fund, one set of flows. The eleven-point gap is the valuation, and it is not cash.
The IRR at which a closed-ended fund merely tiesA drawdown fund advertising 13.25 per cent ties an evergreen netting 8.64. On committed rather than called capital, 78.7 per cent of the edge vanishes.
The month a remediation trigger has to be armed byMonth 8, on a one-year window and a 14-week hiring lead time. The date is 12W − L/4.33 and holds for any portfolio size — the book only changes the euros.
Two routes to the same NAVFive findings in one quarter-end close, and not one of them was a modelling error. Every one was a control that did not exist.
What a CBAM certificate buffer costs to holdCarry and protection are both linear in the buffer, so the break-even probability is identical at 5 per cent and at 30 — and 2027 costs exactly twice 2026.
What a clawback actually collateralises24 million recovers 13.20 net of tax and 7.20 is escrowed. The rule is e ≥ 1 − t, and every euro won on the tax clause lands uncollateralised.
What a co-investment programme actually saves37 basis points, and a 22.8 per cent total-loss rate erases it. At the usual per-deal cap a single failure is 37 per cent of the annual cohort.
What a diligence exercise actually recoversEighteen basis points is only the part that reaches the yield. Three of the four instruments never do, and the exercise is worth thirty-one.
What a follow-on reserve is actually worth0.019 turns under plain dilution, 0.285 under pay-to-play. The optimum is a property of the shareholders’ agreement, not of the portfolio.
What a lease mark-to-market is actually worth5,788,000 becomes 807,365 once the over-market stream, the expiry dates and the cost of re-letting are priced — and nothing at all below a 43.7 per cent renewal rate.
What a minimum payment actually does£81.53 leaves the account and £20.46 reaches the debt. On minimums alone the set clears in 258 months and repays 1.78 times what was borrowed.
What a month of delay costs in an enforcement463,000 euros of present value a month. No single error about enforcement, and no pair of errors, moves the indifference point from 58.7 cents to the 72 on the table.
What a pro rata cheque actually costsDefending costs 1.25 times the initial cheque across two rounds, not more in each — and below a 521 exit the follow-on dollars come back worth less than they cost.
What a subscription line does to the IRR20 per cent becomes 38.41 on the same asset while the multiple falls. Two dollars of interest buys 18.4 points, and the longer the line runs the cheaper each point gets.
What one point of fees actually costsOne point on the annual charge turns 738,846 into 567,961 over forty years — 23 per cent of the pot, and 2.43 of wealth lost per 1 of fee.
When the promote stops clearingCarried interest is not proportional to performance near the hurdle. It is a step function, and $2m of headroom is what stands between a promote and none.
Why a secondaries bid-ask gap has no zoneThe seller’s floor and the buyer’s ceiling are one formula at two rates. At equal required returns the zone is exactly zero — here it is 11.02 points apart.
Why refining a due diligence rubric makes it weakerThree of twelve managers carry a terminal flaw and the average approves all three. Splitting eight domains into sixteen makes it easier to hide, not harder.