When a mezz interest reserve runs out before the tenant's rent starts, what should a participant require
Consider a mezz note participation on a 24 MW powered shell under construction in a Sun Belt secondary market with cheap industrial power. Senior construction debt of 46 million sits ahead of 14 million of mezz, structured at a 12 percent coupon, current pay, with a PIK toggle available at sponsor election for up to four quarters, over a 36 month term with a 12 month extension option. The interest reserve in a deal like this is often funded only through a set month, while the tenant, an investment grade user on a long triple net lease, doesn't start paying rent until commercial operation, which is itself tied to utility energization. A capacity allocation letter naming a target energization date is not the same as a firm delivery date on the substation equipment behind it, and that gap between reserve exhaustion and rent start is exactly where a mezz position can go cash negative with no reserve left to draw. The two live options in that situation are requiring a reserve top-up sized to the expected gap as a closing condition, or accepting the PIK toggle and pricing the accrual into the expected exit. A top-up is the cleaner protection, though it can price a participant out of an allocation if other participants are comfortable with the toggle. The harder question underneath both is simply how often a target energization date in a utility letter actually slips versus holds, since that single data point is what the entire reserve math depends on.